U.S. patent application number 15/984357 was filed with the patent office on 2019-02-21 for damping bearing in convertible antiseismic mode and damping bridge apparatus.
The applicant listed for this patent is Sichuan University. Invention is credited to Huaibang HAN, Fei LI, Wenqiang LI, Yan LI, Yudong ZHAO.
Application Number | 20190055703 15/984357 |
Document ID | / |
Family ID | 60012837 |
Filed Date | 2019-02-21 |
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United States Patent
Application |
20190055703 |
Kind Code |
A1 |
LI; Wenqiang ; et
al. |
February 21, 2019 |
DAMPING BEARING IN CONVERTIBLE ANTISEISMIC MODE AND DAMPING BRIDGE
APPARATUS
Abstract
Disclosed are a damping bearing in convertible antiseismic mode
and a damping bridge apparatus. The damping bearing includes a
bearing body, a damping component, a hydraulic component, and a
connecting piece. The bearing body includes a first bearing, a
second bearing, and a third bearing. The damping component includes
an arc damping member. The arc damping member is located between
the first bearing and the second bearing. One end of the arc
damping member is connected to the second bearing, the other end of
the arc damping member is connected to the first bearing by using
the connecting piece, and after the connecting piece is cut off,
the arc damping member is capable of sliding relative to the first
bearing. The hydraulic component is connected to the arc damping
member and the second bearing respectively.
Inventors: |
LI; Wenqiang; (Chengdu,
CN) ; LI; Fei; (Chengdu, CN) ; LI; Yan;
(Chengdu, CN) ; ZHAO; Yudong; (Chengdu, CN)
; HAN; Huaibang; (Chengdu, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Sichuan University |
Chengdu |
|
CN |
|
|
Family ID: |
60012837 |
Appl. No.: |
15/984357 |
Filed: |
May 20, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F16F 15/022 20130101;
E04B 1/98 20130101; E01D 19/042 20130101 |
International
Class: |
E01D 19/04 20060101
E01D019/04; F16F 15/02 20060101 F16F015/02 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 15, 2017 |
CN |
201710705864.7 |
Claims
1. A damping bearing in convertible antiseismic mode, comprising a
bearing body, a damping component, a hydraulic component, and a
connecting piece; wherein the bearing body comprises a first
bearing, a second bearing, and a third bearing; the damping
component comprises an arc damping member, the arc damping member
is located between the first bearing and the second bearing; a
first end of the arc damping member is connected to the second
bearing and a second end of the arc damping member is connected to
the first bearing through the connecting piece, and the arc damping
member is capable of sliding relative to the first bearing; a first
end of the hydraulic component is connected to a first end of the
arc damping member adjacent to the connecting piece, and a second
end of the hydraulic component is connected to the second bearing;
a first connecting portion is disposed on one side of the second
bearing adjacent to the third bearing; and a second connecting
portion in cooperation with the first connecting portion is
disposed on one side of the third bearing near adjacent to the
second bearing.
2. The damping bearing in convertible antiseismic mode according to
claim 1, wherein the arc damping member comprises an arc portion
and connecting portions connected at two ends of the arc portion;
the arc portion is connected to the second bearing; and the
connecting portions are respectively connected to the first bearing
and the hydraulic component.
3. The damping bearing in convertible antiseismic mode according to
claim 2, wherein the damping component further comprises an
abutting component; and the abutting component abuts between the
arc portion and the second bearing.
4. The damping bearing in convertible antiseismic mode according to
claim 3, wherein the abutting component comprises an abutting base
and an abutting member the abutting base is connected to a first
end of the second bearing adjacent to the first bearing, and the
abutting member abuts between a second end of the abutting base and
the arc portion.
5. The damping bearing in convertible antiseismic mode according to
claim 1, wherein the hydraulic component comprises a piston rod, a
piston cylinder, a damping hole, and an elastic part; the piston
cylinder is connected to the second bearing; a first end of the
piston rod is accommodated in the piston cylinder and connected to
the piston cylinder and a second end of the piston cylinder is
connected to the arc damping member; and the elastic part abuts
between the second end of the piston rod and the piston
cylinder.
6. The damping bearing in convertible antiseismic mode according to
claim 5, wherein a limiting hole connected to the piston rod is
provided in the arc damping member; and the limiting hole is
capable of sliding along the piston rod.
7. The damping bearing in convertible antiseismic mode according to
claim 1, wherein an accommodation space is provided at a first end
of the first bearing adjacent to the connecting piece a rubber
gasket is disposed on a sidewall of the accommodation space; and
the accommodation space is used to accommodate an end portion of
the arc damping member connected to the connecting piece.
8. The damping bearing in convertible antiseismic mode according to
claim 1, wherein the first connecting portion comprises a slot and
a limiting groove; and the second connecting portion comprises a
protruding portion in cooperation with the slot and a limiting
protrusion in cooperation with the limiting groove.
9. The damping bearing in convertible antiseismic mode according to
claim 8, wherein a cushion rubber abuts between the protruding
portion and a sidewall of the slot; and a damping rubber abuts
between the protruding portion and a bottom wall of the slot.
10. A damping bridge apparatus, comprising a bridge body, a pier,
and the damping bearing in convertible antiseismic mode of claim 1;
wherein the damping bearing in convertible antiseismic mode is
located between a bridge body and a pier; the first bearing is
connected to the bridge body and the third bearing is connected to
the pier.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to the field of bridge
antiseismic and bridge seismic mitigation and isolation
technologies, and specifically, to a damping bearing in convertible
antiseismic mode and a damping bridge apparatus.
BACKGROUND OF THE INVENTION
[0002] Earthquake is a phenomenon of propagation shaking caused by
an interior violent motion of the earth. When a great earthquake
breaks out, enormous seismic energy is released, causing massive
damage to the earth surface and human engineering, and severely
threatening the life and property safety of people. Damage caused
by an earthquake to a bridge directly affects smoothness of a
lifeline in an earthquake relief process. Therefore, how to enhance
an antiseismic capability of a bridge and reduce damage of the
bridge caused by an earthquake is a critical problem.
[0003] The nature and extent of damage caused to bridge structures
vary depending on different structural forms and detail structures
of bridges and earthquake motion characteristics on sites of the
bridges. A bridge bearing is an important connecting structure
between a superstructure and a substructure of a bridge, and its
main function is to transfer load of the superstructure to a pier.
Although a ratio of a cost of a bearing to a total cost of a bridge
structure is very small, the bearing plays a significant role in
the bridge structure. The bearing is a relatively weak link in the
bridge structure. During an earthquake, if the bearing is damaged,
other parts of the bridge are affected greatly, and consequently,
earthquake damage becomes worse. Therefore, performance of the
bearing decides overall performance of the bridge to some
extent.
[0004] In a conventional bridge structure, an antiseismic bearing
includes a lead rubber bearing, a high damping rubber bearing, an
antiseismic pot bearing, a friction pendulum bearing, or the like.
Under seismic load, these types of antiseismic bearings still have
insufficient antiseismic capabilities, for example, a poor
antitorque capability, an insufficient limiting capability, and a
low impact resistance capability. In addition, to improve
performance and reliability of seismic mitigation and isolation
bearings, most bearings need to be used in cooperation with other
damper structures. Therefore, a manufacturing process thereof is
complex, high performance of materials is required, and a total
system cost is greatly increased. From a perspective of
environmental protection, pollution of the lead rubber bearing is
severe.
SUMMARY OF THE INVENTION
[0005] An objective of the present invention is to provide a
damping bearing in convertible antiseismic mode. The damping
bearing has a simple structure, complete functions, stable
performance, and a high antitorque capability under action of an
earthquake. The damping bearing is capable of dissipating seismic
energy in a plurality of manners and has high structural
stability.
[0006] Another objective of the present invention is to provide a
damping bridge apparatus. The damping bridge apparatus has a simple
structure, complete functions, stable performance, and a high
antitorque capability under action of an earthquake. The damping
bridge apparatus is capable of dissipating seismic energy in a
plurality of manners and has high structural stability.
[0007] A technical solution provided by the present invention is as
follows:
[0008] A damping bearing in convertible antiseismic mode includes a
bearing body, a damping component, a hydraulic component, and a
connecting piece. The bearing body includes a first bearing, a
second bearing, and a third bearing. The damping component includes
an arc damping member. The arc damping member is located between
the first bearing and the second bearing. One end of the arc
damping member is connected to the second bearing, the other end of
the arc damping member is connected to the first bearing by using
the connecting piece, and the arc damping member is capable of
sliding relative to the first bearing. One end of the hydraulic
component is connected to one end of the arc damping member near to
the connecting piece, and the other end of the hydraulic component
is connected to the second bearing. A first connecting portion is
disposed on one side of the second bearing near to the third
bearing, and a second connecting portion in cooperation with the
first connecting portion is disposed on one side of the third
bearing near to the second bearing.
[0009] Further, the arc damping member includes an arc portion and
connecting portions connected at two ends of the arc portion, the
arc portion is connected to the second bearing, and the connecting
portions are respectively connected to the first bearing and the
hydraulic component.
[0010] Further, the damping component further includes an abutting
component, and the abutting component abuts between the arc portion
and the second bearing.
[0011] Further, the abutting component includes an abutting base
and an abutting member, the abutting base is connected to one end
of the second bearing near to the first bearing, and the abutting
member abuts between the other end of the abutting base and the arc
portion.
[0012] Further, the hydraulic component includes a piston rod, a
piston cylinder, a damping hole, and an elastic part, the piston
cylinder is connected to the second bearing, one end of the piston
rod is accommodated in the piston cylinder and connected to the
piston cylinder, the other end of the piston cylinder is connected
to the arc damping member, and the elastic part abuts between one
end of the piston rod far away from the piston cylinder and the
piston cylinder.
[0013] Further, a limiting hole connected to the piston rod is
provided in the arc damping member, and the limiting hole is
capable of sliding along the piston rod.
[0014] Further, an accommodation space is provided at one end of
the first bearing near to the connecting piece, a rubber gasket is
disposed on a sidewall of the accommodation space, and the
accommodation space may be used to accommodate an end portion of
the arc damping member connected to the connecting piece.
[0015] Further, the first connecting portion includes a slot and a
limiting groove, and the second connecting portion includes a
protruding portion in cooperation with the slot and a limiting
protrusion in cooperation with the limiting groove.
[0016] Further, a cushion rubber abuts between the protruding
portion and a sidewall of the slot, and a damping rubber abuts
between the protruding portion and a bottom wall of the slot.
[0017] A damping bridge apparatus includes a bridge body, a pier,
and a damping bearing in convertible antiseismic mode. The damping
bearing in convertible antiseismic mode includes a bearing body, a
damping component, a hydraulic component, and a connecting piece.
The bearing body includes a first bearing, a second bearing, and a
third bearing. The damping component includes an arc damping
member. The arc damping member is located between the first bearing
and the second bearing. One end of the arc damping member is
connected to the second bearing, the other end of the arc damping
member is connected to the first bearing by using the connecting
piece, and the arc damping member is capable of sliding relative to
the first bearing. One end of the hydraulic component is connected
to one end of the arc damping member near to the connecting piece,
and the other end of the hydraulic component is connected to the
second bearing. A first connecting portion is disposed on one side
of the second bearing near to the third bearing, and a second
connecting portion in cooperation with the first connecting portion
is disposed on one side of the third bearing near to the second
bearing. The damping bearing in convertible antiseismic mode is
located between the bridge body and the pier, the first bearing is
connected to the bridge body, and the third bearing is connected to
the pier.
[0018] Compared with the prior art, the damping bearing in
convertible antiseismic mode and the damping bridge apparatus
provided by the present invention have the following beneficial
effects:
[0019] Normally, the damping bearing in convertible antiseismic
mode is a restraint system. In this case, the arc damping member is
fixedly connected to the first bearing by using the connecting
piece. One end of the arc damping member is connected to the first
bearing by using the connecting piece, and the other end of the arc
damping member is connected to the second bearing. Two ends of the
hydraulic component are respectively connected to the arc damping
member and the second bearing, and a portion of the hydraulic
component connected to the arc damping member can further play a
role of bearing the arc damping member. In this case, the
connecting piece is used to bear horizontal shearing force. A
designed bearing capacity of the connecting piece can ensure that,
under normal circumstances, the connecting piece is not cut off by
wind vibration or small- or medium-magnitude earthquake, but is cut
off under action of a great earthquake. Therefore, under normal
working conditions, the arc damping member maintains its structural
stability under joint action of the connecting piece and the
hydraulic component. The first connecting portion and the second
connecting portion are interconnected to ensure that the second
bearing and the third bearing are not horizontally displaced. In
addition, the damping bearing can maintain structural stability in
a strong wind and absorb energy generated by wind vibration. In a
great earthquake, because the arc damping member receives a
tremendous instantaneous impact, a portion of the arc damping
member connected to the first bearing is displaced, the connecting
piece is cut off, and the damping bearing in convertible
antiseismic mode is converted into a damping system. In this case,
the connecting piece is cut off, and the first bearing and the arc
damping member are capable of sliding relative to each other. The
hydraulic component can absorb instantaneous impact energy
generated during breaking of the connecting piece and energy
transferred to the bearing during the earthquake. After one end of
the hydraulic component connected to the arc damping member is
pressed, a viscous damping medium in the hydraulic component is
caused to flow and absorb some load. Because the viscous damping
medium cannot flow massively within a short time, the hydraulic
component cannot move within a short time, and further, the whole
structure is locked in a rigid state, and system strength is
enhanced. Because great torque is generated during the earthquake,
the second bearing and the third bearing rotate relative to each
other. The second connecting portion on the third bearing and the
first connecting portion on the second bearing can limit rotation
angles of the second bearing and the third bearing in a horizontal
direction. After the earthquake disappears, pressure received by
one end of the hydraulic component near to the first bearing is
reduced, and the hydraulic component is gradually reset. Therefore,
the arc damping member is restored to a stable position to some
extent to maintain basic functions of the bearing. Because the
third bearing is slightly displaced under action of the first
connecting portion and the second connecting portion, the third
bearing gradually moves to its initial position under action of
opposite force. Therefore, after the earthquake disappears, the
damping bearing in convertible antiseismic mode can maintain its
function of bearing the superstructure to some extent, and maintain
a smooth lifeline for earthquake relief. Featuring a simple
structure, complete functions, stable performance, and a high
antitorque capability under action of an earthquake, the damping
bearing in convertible antiseismic mode and the damping bridge
apparatus provided by the present invention are capable of
dissipating seismic energy in a plurality of manners and have high
structural stability.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] To describe the technical solutions in the embodiments of
the present invention more clearly, the following briefly describes
the accompanying drawings required for the embodiments. It should
be understood that, the following drawings merely show some
embodiments of the present invention, and therefore should not be
construed as limitations to the scope. A person of ordinary skill
in the art may still derive other drawings from these drawings
without creative efforts.
[0021] FIG. 1 is a schematic structural diagram of a damping
bearing in convertible antiseismic mode according to a first
embodiment of the present invention;
[0022] FIG. 2 is a schematic structural diagram an arc damping
member according to the first embodiment of the present
invention;
[0023] FIG. 3 is a schematic structural diagram an abutting
component according to the first embodiment of the present
invention;
[0024] FIG. 4 is a schematic structural diagram an abutting base
according to the first embodiment of the present invention;
[0025] FIG. 5 is a schematic structural diagram a hydraulic
component according to the first embodiment of the present
invention;
[0026] FIG. 6 is a schematic structural diagram a cushion rubber
according to the first embodiment of the present invention; and
[0027] FIG. 7 is a schematic structural diagram of a first
connecting portion and a second connecting portion according to the
first embodiment of the present invention.
[0028] Legend: 100--damping bearing in convertible antiseismic
mode; 110--bearing body; 111--first bearing; 1111--mounting groove;
112--second bearing; 1121--first connecting portion; 11211--slot;
11212--limiting groove; 1122--mounting slot; 113--third bearing;
1131--second connecting portion; 11311--protruding portion;
11312--limiting protrusion; 114--accommodation space; 115--rubber
gasket; 116--damping rubber; 117--cushion rubber; 120--damping
component; 121--arc damping member; 1211--arc portion;
12111--second connecting hole; 1212--connecting portion;
12121--first connecting hole; 12122--limiting hole; 122--abutting
component; 1221--abutting base; 12211--first connecting base;
12212--second connecting base; 1222--abutting member; 123--third
connecting hole; 130--hydraulic component; 131--piston rod;
132--piston cylinder; 133--elastic part; 140--connecting piece;
141--rubber bushing; 150--friction cushion.
DETAILED DESCRIPTION OF THE INVENTION
[0029] To make the objectives, technical solutions, and advantages
of the embodiments of the present invention clearer, the following
describes the technical solutions of the embodiments of the present
invention clearly and completely with reference to the accompanying
drawings in the embodiments of the present invention. Apparently,
the described embodiments are a part rather than all of the
embodiments. Generally, components in the embodiments of the
present invention described and shown in the drawings herein may be
disposed and designed according to different configurations.
[0030] Therefore, the following detailed description of the
embodiments of the present invention provided in the drawings is
not intended to limit the protection scope of the present
invention, but merely to represent selected embodiments of the
present invention. All other embodiments obtained by a person of
ordinary skill in the art without creative efforts based on the
embodiments of the present invention also fall within the
protection scope of the present invention.
[0031] It should be noted that, similar reference numbers and
letters in the following drawings represent similar items.
Therefore, once an item is defined in a drawing, the item does not
need to be further defined and explained in subsequent
drawings.
[0032] It should be understood that, in the description of the
present invention, an orientation or a position relationship
indicated by a term "upper", "lower", "inside", "outside", "left",
"right", or the like is an orientation or a position relationship
based on the drawings, or is a usual orientation or position
relationship of the product of the present invention in use, or is
an orientation or a position relationship usually understood by a
person skilled in the art, and is used merely for describing the
present invention and simplifying the description. The term does
not indicate or imply that a device or an component in question
must have a specific orientation and must be constructed and
operated in a specific orientation, and therefore should not be
understood as a limitation to the present invention.
[0033] In addition, terms such as "first" and "second" are used
merely for differential description purposes and cannot be
understood as indications or implications of relative
importance.
[0034] It should also be noted that, in the description of the
present invention, unless otherwise specified and defined, terms
"disposition" and "connection" should be understood in a broad
sense. For example, the "connection" may be a fixed connection, a
detachable connection, or an integrated connection, may be a
mechanical connection or an electrical connection, may be a direct
connection or an indirect connection through an intermediate
medium, or may be an internal connection between two components. A
person of ordinary skill in the art may understand specific
meanings of the foregoing terms in the present invention according
to actual situations.
[0035] The following describes in detail the embodiments of the
present invention with reference to the accompanying drawings.
First Embodiment
[0036] Referring to FIG. 1, this embodiment provides a damping
bearing 100 in convertible antiseismic mode. The damping bearing
has a simple structure, complete functions, stable performance, and
a high antitorque capability under action of an earthquake. The
damping bearing is capable of dissipating seismic energy in a
plurality of manners and has high structural stability.
[0037] The damping bearing 100 in convertible antiseismic mode
according to this embodiment includes a bearing body 110, a damping
component 120, a hydraulic component 130, and a connecting piece
140. The bearing body 110 includes a first bearing 111, a second
bearing 112, and a third bearing 113. The damping component 120
includes an arc damping member 121. The arc damping member 121 is
located between the first bearing 111 and the second bearing 112.
One end of the arc damping member 121 is connected to the second
bearing 112, the other end of the arc damping member 121 is
connected to the first bearing 111 by using the connecting piece
140, and the arc damping member 121 is capable of sliding relative
to the first bearing 111. One end of the hydraulic component 130 is
connected to one end of the arc damping member 121 near to the
connecting piece 140, and the other end of the hydraulic component
130 is connected to the second bearing 112. A first connecting
portion 1121 is disposed on one side of the second bearing 112 near
to the third bearing 113, and a second connecting portion 1131 in
cooperation with the first connecting portion 1121 is disposed on
one side of the third bearing 113 near to the second bearing
112.
[0038] It should be noted that, normally, the arc damping member
121 is fixedly connected to the first bearing 111 by using the
connecting piece 140. When the connecting piece 140 bears excessive
shearing stress, the connecting piece 140 is cut off, and in this
case, the arc damping member 121 is capable of sliding relative to
the first bearing 111.
[0039] Referring to FIG. 1 and FIG. 2, in this embodiment, the arc
damping member 121 includes an arc portion 1211 and connecting
portions 1212 connected at two ends of the arc portion 1211, the
arc portion 1211 is connected to the second bearing 112, and the
connecting portions 1212 are respectively connected to the first
bearing 111 and the hydraulic component 130.
[0040] In this embodiment, the damping component 120 further
includes an abutting component 122 that abuts between the arc
portion 1211 and the second bearing 112.
[0041] In this embodiment, the arc damping member 121 is made of a
whole steel sheet. Certainly, this is not limited. In other
embodiments of the present invention, the arc damping member 121
may also be made in other manners, for example, formed by bending a
plurality of steel blocks.
[0042] It may be understood that, there may be one or more arc
damping members 121. A quantity of arc damping members 121 is not
specifically limited in this embodiment. In addition, a plurality
of arc damping members 121 may be independent of each other, or may
be interconnected in sequence.
[0043] In this embodiment, a first connecting hole 12121 connected
to the first bearing 111 and a limiting hole 12122 that may be
connected in a sliding manner to the hydraulic component 130 are
provided in the connecting portion 1212. A second connecting hole
12111 connected to the second bearing 112 is provided in the arc
portion 1211. In addition, in this embodiment, the plurality of arc
damping members 121 are interconnected in sequence, and a third
connecting hole 123 that may be connected to the abutting component
122 is provided between two adjacent arc damping members 121.
[0044] It should be noted that, in this embodiment, in order that
the connecting portion 1212 is connected to the first bearing 111
more firmly, a mounting groove 1111 in cooperation with the
connecting portion 1212 is further provided in the first bearing
111. The connecting portion 1212 may be partly accommodated in the
mounting groove 1111. The connecting portion 1212 may be limited by
a sidewall of the mounting groove 1111.
[0045] Referring to FIG. 3, the abutting component 122 includes an
abutting base 1221 and an abutting member 1222, the abutting base
1221 is connected to one end of the second bearing 112 near to the
first bearing 111, and the abutting member 1222 abuts between the
other end of the abutting base 1221 and the arc portion 1211.
[0046] Referring to FIG. 4, the abutting base 1221 includes a
plurality of first connecting bases 12211 and a plurality of second
connecting bases 12212 that are interconnected in sequence. The
first connecting base 12211 is connected to the second bearing 112,
and the second connecting base 12212 is connected to the arc
damping member 121. The abutting member 1222 abuts between one end
of the first connecting base 12211 far away from the second bearing
112 and the arc damping member 121, and plays a role of buffering
when the arc damping member 121 receives pressure. Preferably, the
abutting member 1222 is made of an elastic material, for example, a
rubber.
[0047] In this embodiment, a mounting slot 1122 connected to the
first connecting base 12211 is provided in the second bearing 112.
A shape and a structure of the mounting slot 1122 match those of
the first connecting base 12211, so that the first connecting base
12211 is more firmly mounted on the second bearing 112. In
addition, in this embodiment, the second connecting base 12212 is
clamped with the third connecting hole 123.
[0048] Referring to FIG. 5, the hydraulic component 130 includes a
piston rod 131, a piston cylinder 132, and an elastic part 133, the
piston cylinder 132 is connected to the second bearing 112, one end
of the piston rod 131 is accommodated in the piston cylinder 132
and connected to the piston cylinder 132, the other end of the
piston cylinder 132 is connected to the arc damping member 121, and
the elastic part 133 abuts between one end of the piston rod 131
far away from the piston cylinder 132 and the piston cylinder
132.
[0049] In this embodiment, the piston rod 131 is connected to the
limiting hole 12122 provided in the arc damping member 121. When
the connecting piece 140 is cut off, the connecting portion 1212
may drive the limiting hole 12122 to slide along the piston rod
131.
[0050] It may be understood that, after one end of the piston rod
131 near to the first bearing 111 is pressed, the piston rod 131 is
displaced relative to the piston cylinder 132, and a viscous
damping medium in the piston cylinder 132 moves in upper and lower
chambers and absorbs load transferred by the piston rod 131. The
elastic part 133 located between the piston rod 131 and the piston
cylinder 132 can absorb a part of energy. This can avoid a
malfunction after the hydraulic component 130 receives an
instantaneous impact. Because the viscous damping medium cannot
flow massively in the upper and lower chambers within a short time,
the piston rod 131 cannot move within a short time. Therefore, the
whole structure is locked in a rigid state, and system strength is
further enhanced.
[0051] In this embodiment, one end of the piston rod 131 near to
the first bearing 111 is partly embedded in the first bearing 111
to ensure that the piston rod 131 does not fall off from the first
bearing 111 during an earthquake.
[0052] In this embodiment, the connecting piece 140 is a shearing
bolt, and the shearing bolt is sleeved with a rubber bushing 141 to
adapt to displacement of two ends of the arc damping member 121
caused by thermal deformation under normal working conditions.
[0053] In this embodiment, an accommodation space 114 is provided
at one end of the first bearing 111 near to the connecting piece
140, a rubber gasket 115 is provided on a sidewall of the
accommodation space 114, and the accommodation space 114 may be
used to accommodate an end portion of the arc damping member 121
connected to the connecting piece 140.
[0054] It may be understood that, when the connecting piece 140 is
broken, the arc damping member 121 moves to the two ends, and the
end portion of the arc damping member 121 moves toward the
accommodation space 114. A purpose of the accommodation space 114
is to accommodate the end portion of the arc damping member 121
connected to the connecting piece 140, to prevent the end portion
from falling off. The rubber gasket 115 disposed in the
accommodation space 114 can reduce the impact when the arc damping
member 121 moves toward the accommodation space 114, and facilitate
resetting of the arc damping member 121 after the earthquake.
[0055] Referring to FIG. 1, FIG. 6, and FIG. 7, in this embodiment,
the first connecting portion 1121 cooperates with the second
connecting portion 1131 to avoid moving of the second bearing 112
and the third bearing 113 relative to each other in a horizontal
direction.
[0056] In this embodiment, the first connecting portion 1121
includes a slot 11211 and a limiting groove 11212, and the second
connecting portion 1131 includes a protruding portion 11311 in
cooperation with the slot 11211 and a limiting protrusion 11312 in
cooperation with the limiting groove 11212.
[0057] It should be noted that, a height of the slot 11211 is
greater than a height of the protruding portion 11311, that is,
there is a certain space between the protruding portion 11311 and
the slot 11211. The space can partly absorb displacement of the
second bearing 112 or the third bearing 113 in a vertical
direction, and further avoid damage of the slot 11211 and the
protruding portion 11311 and prolong their service life.
Preferably, a damping rubber 116 abuts between the protruding
portion 11311 and a bottom wall of the slot 11211.
[0058] It should be noted that, a width of the slot 11211 is also
greater than a width of the protruding portion 11311, and a cushion
rubber 117 abuts between the protruding portion 11311 and a
sidewall of the slot 11211. Under normal working conditions, the
cushion rubber 117 can limit displacement to ensure structural
stability. Under action of an earthquake, the cushion rubber 117
can avoid excessive rotational displacement of the structure, and
play a role of buffering. After the earthquake disappears, because
the rubber is previously pressed, opposite force is generated, and
in this case, the opposite force pushes the structure to be reset
gradually.
[0059] In this embodiment, a damping groove is further provided at
one end of the second bearing 112 near to the third bearing 113,
and a damping protrusion in cooperation with the damping groove is
provided at one end of the third bearing 113 near to the second
bearing 112.
[0060] It may be understood that, because a joint between the
protruding portion 11311 and the third bearing 113 is vertical to a
horizontal plane, the protruding portion 11311 is less capable of
bearing horizontal shearing force, and may be easily cut off when
the horizontal shearing force is too great. The cooperation between
the limiting protrusion 11312 and the limiting groove 11212 can
limit horizontal displacement. In other words, the protruding
portion 11311 and the slot 11211 are mainly used to limit rotation
angles of the second bearing 112 and the third bearing 113; the
limiting protrusion 11312 and the limiting groove 11212 limit
horizontal displacement of the second bearing 112 and the third
displacement 113; and energy may be consumed through friction
between contact surfaces of the limiting protrusion 11312 and the
limiting groove 11212 when the second bearing 112 and the third
bearing rotate relative to each other.
[0061] In this embodiment, the limiting protrusion 11312 is a
convex spheroid, and the limiting groove 11212 is a concave
spheroid in cooperation with the convex spheroid. In other words, a
joint face between the limiting protrusion 11312 and the limiting
groove 11212 is a sphere. A contact area of the sphere is large,
and this can enhance a capability of consuming energy through
friction between the limiting protrusion 11312 and the limiting
groove 11212 when the second bearing 112 and the third bearing 113
rotate relative to each other.
[0062] In addition, in this embodiment, a friction cushion is
further disposed between the second bearing 112 and the third
bearing 113 to increase a coefficient of friction between the
second bearing 112 and the third bearing 113 and avoid abrasion
caused by mutual sliding of the second bearing 112 and the third
bearing 113.
[0063] An operating principle and beneficial effects of the damping
bearing 100 in convertible antiseismic mode according to this
embodiment are as follows: Normally, the damping bearing 100 in
convertible antiseismic mode is a restraint system. One end of the
arc damping member 121 is connected to the first bearing 111 by
using the connecting piece 140, and the other end of the arc
damping member 121 is connected to the second bearing 112. Two ends
of the hydraulic component 130 are respectively connected to the
arc damping member 121 and the second bearing 112, and a portion of
the hydraulic component 130 connected to the arc damping member 121
can further play a role of bearing the arc damping member 121. In
this case, the connecting piece 140 is used to bear horizontal
shearing force. A designed bearing capacity of the connecting piece
140 can ensure that, under normal circumstances, the connecting
piece 140 is not cut off by wind vibration or small- or
medium-magnitude earthquake, but is cut off under action of a great
earthquake. Therefore, under normal working conditions, the arc
damping member 121 maintains its structural stability under joint
action of the connecting piece 140 and the hydraulic component 130.
The first connecting portion 1121 and the second connecting portion
1131 cooperate to ensure that the second bearing 112 and the third
bearing 113 are not horizontally displaced. In addition, the
damping bearing can maintain structural stability in a strong wind
and absorb energy generated by wind vibration.
[0064] In a great earthquake, because the arc damping member 121
receives a tremendous instantaneous impact, a portion of the arc
damping member 121 connected to the first bearing 111 is displaced,
the connecting piece 140 is cut off, and the damping bearing 100 in
convertible antiseismic mode is converted into a damping system.
The hydraulic component 130 can absorb instantaneous impact energy
generated during breaking of the connecting piece 140 and energy
transferred to the bearing during the earthquake. After one end of
the hydraulic component 130 connected to the arc damping member 121
is pressed, the viscous damping medium in the hydraulic component
130 is caused to flow and absorb some load. Because the viscous
damping medium cannot flow massively within a short time, the
hydraulic component 130 cannot move within a short time, and
further, the whole structure is locked in a rigid state, and system
strength is enhanced.
[0065] Because great torque is generated during the earthquake, the
second bearing 112 and the third bearing 113 rotate relative to
each other. The second connecting portion 1131 on the third bearing
113 and the first connecting portion 1121 on the second bearing 112
can limit rotation angles of the second bearing 112 and the third
bearing 113 in the horizontal direction. After the earthquake
disappears, pressure received by one end of the hydraulic component
130 near to the first bearing 111 is reduced, and the hydraulic
component is gradually reset. Therefore, the arc damping member 121
is restored to a stable position to some extent to maintain basic
functions of the bearing. Because the third bearing 113 is slightly
displaced under action of the first connecting portion 1121 and the
second connecting portion 1131, the third bearing 113 gradually
moves to its initial position under action of opposite force.
Therefore, after the earthquake disappears, the damping bearing 100
in convertible antiseismic mode can maintain its function of
bearing the superstructure to some extent, and maintain a smooth
lifeline for earthquake relief.
[0066] Featuring a simple structure, complete functions, stable
performance, and a high antitorque capability under action of an
earthquake, the damping bearing 100 in convertible antiseismic mode
according to this embodiment is capable of dissipating seismic
energy in a plurality of manners and has high structural
stability.
Second Embodiment
[0067] This embodiment provides a damping bridge apparatus (not
shown in the figures), including a bridge body (not shown in the
figures), a pier (not shown in the figures), and a damping bearing
100 in convertible antiseismic mode. The damping bearing 100 in
convertible antiseismic mode includes a first bearing 111, a second
bearing 112, a third bearing 113, a damping component 120, a
hydraulic component 130, and a connecting piece 140. The damping
component 120 includes an arc damping member 121. The arc damping
member 121 is located between the first bearing 111 and the second
bearing 112. One end of the arc damping member 121 is connected to
the second bearing 112, the other end of the arc damping member 121
is connected to the first bearing 111 by using the connecting piece
140, and when the connecting piece 140 falls off, the arc damping
member 121 is capable of sliding relative to the first bearing 111.
One end of the hydraulic component 130 is connected to one end of
the arc damping member 121 near to the connecting piece 140, and
the other end of the hydraulic component 130 is connected to the
second bearing 112. A first connecting portion 1121 is disposed on
one side of the second bearing 112 near to the third bearing 113,
and a second connecting portion 1131 clamped with the first
connecting portion 1121 is disposed on one side of the third
bearing 113 near to the second bearing 112. The damping bearing 100
in convertible antiseismic mode is located between the bridge body
and the pier, the first bearing 111 is connected to the bridge
body, and the third bearing 113 is connected to the pier.
[0068] Featuring a simple structure, complete functions, stable
performance, and a high antitorque capability under action of an
earthquake, the damping bridge apparatus provided by this
embodiment is capable of dissipating seismic energy in a plurality
of manners and has high structural stability.
[0069] The foregoing descriptions are merely preferred embodiments
of the invention, and are not intended to limit the present
invention. A person skilled in the art may make various
modifications or variations to the present invention. Any
modification, equivalent replacement, improvement, or the like made
without departing from the spirit and principle of the present
invention shall fall within the protection scope of the present
invention.
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