U.S. patent application number 14/727821 was filed with the patent office on 2016-06-09 for light-weight temporary bridge system and building method thereof.
The applicant listed for this patent is National Applied Research Laboratories. Invention is credited to Kuo-Chun Chang, Hsiao-Hui Hung, Yu-Chi Sung, Fang-Yao Yeh.
Application Number | 20160160457 14/727821 |
Document ID | / |
Family ID | 56093801 |
Filed Date | 2016-06-09 |
United States Patent
Application |
20160160457 |
Kind Code |
A1 |
Yeh; Fang-Yao ; et
al. |
June 9, 2016 |
Light-Weight Temporary Bridge System and Building Method
thereof
Abstract
A light-weight temporary bridge system includes a weight balance
structure-module, constructed at a first abutment; a bridge tower
structure-module, including a bottom part fixed to the weight
balance structure-module and a top part coupled to the weight
balance structure-module via at least one first cable; and a
crossing structure-module constructed between the first abutment
and a second abutment, coupled to the weight balance
structure-module and coupled to the top part of the bridge tower
structure-module via at least one second cable.
Inventors: |
Yeh; Fang-Yao; (Taoyuan
City, TW) ; Sung; Yu-Chi; (Taipei, TW) ;
Chang; Kuo-Chun; (Taipei City, TW) ; Hung;
Hsiao-Hui; (New Taipei City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
National Applied Research Laboratories |
Taipei City |
|
TW |
|
|
Family ID: |
56093801 |
Appl. No.: |
14/727821 |
Filed: |
June 1, 2015 |
Current U.S.
Class: |
14/2.4 ;
14/77.1 |
Current CPC
Class: |
E01D 2101/34 20130101;
E01D 11/04 20130101; E01D 21/105 20130101; E01D 18/00 20130101;
E01D 2101/40 20130101 |
International
Class: |
E01D 11/04 20060101
E01D011/04; E01D 21/10 20060101 E01D021/10 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 3, 2014 |
TW |
103142046 |
Claims
1. A light-weight temporary bridge system, comprising: a weight
balance structure-module, constructed at a first abutment; a bridge
tower structure-module, comprising a bottom part fixed to the
weight balance structure-module and a top part coupled to the
weight balance structure-module via at least one first cable; and a
crossing structure-module constructed between the first abutment
and a second abutment, coupled to the weight balance
structure-module and coupled to the top part of the bridge tower
structure-module via at least one second cable.
2. The light-weight temporary bridge system of claim 1, wherein the
crossing structure-module is constructed between the first abutment
and the second abutment via a cantilever method.
3. The light-weight temporary bridge system of claim 1, wherein
densities of the weight balance structure-module and the bridge
tower structure-module are greater than a density of the crossing
structure-module.
4. The light-weight temporary bridge system of claim 1, wherein the
weight balance structure-module is consisted of one of the steel,
the aluminum, the alloy of the steel and the aluminum, the concrete
and the reinforced concrete.
5. The light-weight temporary bridge system of claim 1, wherein the
bridge tower structure-module is consisted of one of the steel, the
aluminum, the alloy of the steel and the aluminum, the concrete and
the reinforced concrete.
6. The light-weight temporary bridge system of claim 1, wherein the
crossing structure-module is consisted of a composite material.
7. The light-weight temporary bridge system of claim 6, wherein the
composite material is one of the Glass Fiber Reinforced Plastic
(GFRP), the Carbon Fiber Reinforced Plastic (CFRP), the Kevlar
Fiber Reinforced Plastic (KFRP), the Basalt Fiber Reinforced
Plastic (BFRP) and the Hybrid Fiber Reinforced Plastic.
8. The light-weight temporary bridge system of claim 1, wherein the
weight balance structure-module, the tower bridge structure-module,
the crossing structure-module are consisted of a plurality of
modular components.
9. The light-weight temporary bridge system of claim 8, wherein the
modular components are connected by bolts and connecting
plates.
10. A building method of a light-weight temporary bridge system,
the building method comprising: constructing a weight balance
structure-module on a first abutment; coupling a bottom part of a
bridge tower structure to the weight balance structure-module and
coupling a top part of the bridge tower structure and the weight
balance structure-module via at least one first cable; and
constructing a crossing structure-module between the first abutment
and a second abutment, wherein the crossing structure-module is
coupled to the weight balance structure-module and is coupled to
the top part of the bridge tower structure-module via at least one
second cables.
11. The building method of claim 10, wherein the step of
constructing the crossing structure-module between the first
abutment and the second abutment comprises: constructing the
crossing structure-module between the first abutment and the second
abutment via a cantilever method.
12. The building method of claim 10, wherein densities of the
weight balance structure-module and the bridge tower
structure-module are greater than a density of the crossing
structure-module.
13. The building method of claim 10, wherein the weight balance
structure-module is consisted of one of the steel, the aluminum,
the alloy of the steel and the aluminum, the concrete and the
reinforced concrete.
14. The building method of claim 10, wherein the bridge tower
structure-module is consisted of one of the steel, the aluminum,
the alloy of the steel and the aluminum, the concrete and the
reinforced concrete.
15. The building method of claim 10, wherein the crossing
structure-module is consisted of a composite material.
16. The building method of claim 15, wherein the composite material
is one of the Glass Fiber Reinforced Plastic (GFRP), the Carbon
Fiber Reinforced Plastic (CFRP), the Kevlar Fiber Reinforced
Plastic (KFRP), the Basalt Fiber Reinforced Plastic (BFRP) and the
Hybrid Fiber Reinforced Plastic.
17. The building method of claim 10, wherein the weight balance
structure-module, the tower bridge structure-module, the crossing
structure-module are consisted of a plurality of modular
components.
18. The building method of claim 17, wherein the modular components
are connected by bolts and connecting plates.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a light-weight temporary
bridge system and building method thereof, and more particularly,
to a light-weight temporary bridge system realized by the
asymmetric cable-stayed bridge structure and building method
thereof.
[0003] 2. Description of the Prior Art
[0004] In recent years, nature disasters such as typhoons and flood
frequently occur due to the extreme climate. When the serious
nature disaster occur, bridges may be damaged and the road
connecting to the mountain residual communities may be cut off,
resulting in that the mountain residual communities become isolated
and the transportation of the rescuer and relief supplies may
encounter difficulties. In response to the situation of the nature
disaster damages the bridges and the bridges cannot offer the
normal traffic functions, many countries actively develop temporary
bridges equipping with the feature of rapid assemblage, to relief
the traffic problem and the island effect due to the road
discontinuity.
[0005] The common temporary bridges include a cement culvert
riverbed sidewalk and a steel temporary bridge. However, during the
constructing processes of the cement culvert riverbed sidewalk and
the steel temporary bridge, the workers are required to build
foundation supports (e.g. bridge piers) at the riverbed. If the
nature disaster rapids the stream velocity of the river, the cement
culvert riverbed sidewalk and steel temporary bridge cannot be
constructed due to the safety concerns and the time of rescue and
relief supplies entering the disaster areas is therefore delayed.
In addition, the materials and construction machinery of the cement
culvert riverbed sidewalk and steel temporary bridge are hard to
prepare which further delays the time of completing the cement
culvert riverbed sidewalk and steel temporary bridge. Thus, how to
use simple construction machinery and portable materials to
construct the temporary bridge becomes a topic to be discussed.
SUMMARY OF THE INVENTION
[0006] In order to solve the above problem, the present invention
provides a light-weight temporary bridge system realized in the
asymmetric cable-stayed bridge structure and building method
thereof.
[0007] The present invention discloses a light-weight temporary
bridge system, comprising a weight balance structure-module,
constructed at a first abutment; a bridge tower structure-module,
comprising a bottom part fixed to the weight balance
structure-module and a top part coupled to the weight balance
structure-module via at least one first cable; and a crossing
structure-module constructed between the first abutment and a
second abutment, coupled to the weight balance structure-module and
coupled to the top part of the bridge tower structure-module via at
least one second cable.
[0008] The present invention further discloses a building method of
a light-weight temporary bridge system, the building method
comprising constructing a weight balance structure-module on a
first abutment; coupling a bottom part of a bridge tower structure
to the weight balance structure-module and coupling a top part of
the bridge tower structure and the weight balance structure-module
via at least one first cable; and constructing a crossing
structure-module between the first abutment and a second abutment,
wherein the crossing structure-module is coupled to the weight
balance structure-module and is coupled to the top part of the
bridge tower structure-module via at least one second cables.
[0009] These and other objectives of the present invention will no
doubt become obvious to those of ordinary skill in the art after
reading the following detailed description of the preferred
embodiment that is illustrated in the various figures and
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 is a schematic diagram of a light-weight temporary
bridge system according to an embodiment of the present
invention.
[0011] FIG. 2 is a segment exploded view of the light-weight
temporary bridge system shown in FIG. 1.
[0012] FIG. 3 is a schematic diagram of an implementation of a
gradient section.
[0013] FIG. 4 is a schematic diagram of an implementation of the
tower bridge structure shown in FIG. 1.
[0014] FIGS. 5A-5D are schematic diagrams of the processes of
constructing the light-weight temporary bridge system shown in FIG.
1.
[0015] FIG. 6 is a flowchart of a process according to an
embodiment of the present invention.
DETAILED DESCRIPTION
[0016] Please refer to FIG. 1, which is a schematic diagram of a
light-weight temporary bridge system 10 according to an embodiment
of the present invention. The light-weight temporary bridge system
10 may be a temporary bridge for crossing roads damaged by the
nature disasters, and is not limited herein. As shown in FIG. 1,
the light-weight temporary bridge system 10 is realized in an
asymmetric cable-stayed bridge structure and comprises a weight
balance structure-module 100, a bridge tower structure-module 102
and a crossing structure-module 104. The weight balance
structure-module 100 and the bridge tower structure-module 102 are
constructed on an abutment Al, wherein the weight balance
structure-module 100 is not only directly coupled to a bottom part
of the bridge tower structure-module 102 but also coupled to a top
part of the bridge tower structure-module 102 via a plurality of
cables 106 (e.g. steel cables). The crossing structure-module 104
is coupled to the weight balance structure-module 100 and coupled
to the top part of the bridge tower structure-module 102 via a
plurality of cables 108 (e.g. steel cables). Note that, FIG. 1 only
shows parts of the cables 106 and 108 for illustrations. Via the
counterweight provided by the weight balance structure-module 100
and the bridge tower structure-module 102 and the
horizontal/vertical pulls provided by the cables 106 and 108, the
crossing structure-module 104 can be constructed between the
abutments A1 and A2 by a cantilever method, to realize a path
across a gap G (e.g. a discontinuity of the roads or a bridge).
Since the crossing structure-module 104 is constructed by the
cantilever method, the workers can construct and complete the
light-weight temporary bridge system 10 at a side of the gap G
(e.g. the abutment A1) without building any foundation support
(e.g. the bridge pier).
[0017] In details, the weight balance structure-module 100, the
bridge tower structure-module 102, and the crossing
structure-module may be consisted of a plurality of modular
components, and the modular components may be connected to each
other by bolts and connecting plates, to achieve the goal of
convenient transportation and rapid assembly. Please refer to FIG.
2, which is a segment exploded view of the light-weight temporary
bridge system 10 shown in FIG. 1. As shown in FIG. 2, the weight
balance structure-module 100 is consisted of segments 100_A, 100_B
and 100_C. The segments 100_A, 100_B and 100_C all comprises 5 main
girders W_G, 2 side girders W_SG and 2 box beams W_BB, wherein only
the main girders W_G, side girders W_SG and box beams W_BB of the
segment 100_A are labeled in FIG. 2 for illustrations. The main
girder W_G and the side girder W_SG may be H shaped girders, and
the 5 main girders W_G and the 2 side girders W_SG are connected to
each other via the 2 box beams W_BB. In addition, shackles are
configured on the side girders W_SG for connecting and fixing the
cables 106. In this embodiment, the main girders W_G and the side
girders W_SG are H shaped girders, the length of which is 4 meters
and the section size of which is H294.times.200.times.8.times.12.
According to different applications and design concepts, the
lengths and the section sizes of the main girders W_G, the side
girders W_SG and the box beams W_BB may be appropriately altered,
and are not limited herein.
[0018] Since the section size of the segment 100_C may be different
from that of the crossing structure-module 104, the side of the
main girders W_G connected to the crossing structure-bridge 104 may
equip with gradient sections for connecting to the crossing
structure-module 104. Please refer to FIG. 3, which is a schematic
diagram of an implementation of the gradient section. In FIG. 3,
the length of the gradient section is 1 meter, a section size of a
side A is H294.times.200.times.8.times.12 and a section size of a
side B is H410.times.200.times.18.times.20. In this embodiment, the
section size of the side A is equal to the section size of the main
girders W_G connecting to the segments 100_A and 100_B and the
section size of the side B is equal to that of a main girder C_G of
the crossing structure-module 104. According to different
applications and design concepts, the lengths and the section sizes
of the gradient section may be appropriately altered, and are not
limited those shown in FIG. 3.
[0019] Please back to FIG. 2, the bridge tower structure-module 102
comprises 2 main girders T_G and 2 box beams T_BB. In this
embodiment, the main girders T_G may be the H shaped girders with
H294.times.200.times.8.times.12 section size and the 2 main girders
T_G are connected to each other via the box beams T_BB. Via the
bolts and connecting plates, the main girders T_G are fixed to the
side girders W_SG of the segment 100_C, respectively. In addition,
the main girders T_G also equip with the shackles for fixing the
cables 106 and 108. Please refer to FIG. 4, which is a schematic
diagram of an implementation of the bridge tower structure-module
102. In FIG. 4, a height of the main girder T_G is 6.5 meters and a
distance between the main girders T_G is 3 meters for allowing
vehicles to pass. In addition, the box beams T_BB are located at 3
meters and 5.5 meters height. According to different application
and design concepts, the heights of the main girders T_G, the
distance between the main girders T_G, and the heights from the
bridge platform to the box beams T_BB may be appropriately altered
and are not limited to those shown in FIG. 4.
[0020] Please back to FIG. 2, the crossing structure-module 104 is
consisted of segments 104_A-104_E, wherein all of the segments
104_A-104_E comprise 5 main girders C_G and the segments
104_A-104_D further comprise cross beams C_CB. In order to simplify
illustrations, only the main girders C_G and the cross beam C_CB of
the segment 104_A are labeled in FIG. 2. The cross beams C_CB are
not only used for connecting and fixing the cables 108, but also
used for connecting the 5 main girders C_G. According to the
structure shown in FIG. 2, the workers may separately assemble the
segments 100_A-100_C, 104_A-104_D and the bridge tower
structure-module 102 and then sequentially connects the segments
100_A-100_C and the bridge tower structure-module 102 by the bolts
and connecting plates at the abutment A1. Via the counterweight
provided by the weight balance structure-module 100 and the bridge
tower structure-module 102 and the horizontal/vertical pulls
provided by the cables 106 and 108, the workers sequentially
connect the segments 100_C, 104_A-100_E by the cantilever method
and accomplish the light-weight temporary bridge system 10 realized
in the asymmetric cable-stayed bridge structure. Since the crossing
structure 104 is built by the cantilever method, the workers
construct and complete the light-weight temporary bridge system 10
at the abutment A1 without building any foundation support at the
gap G and provide the path across the gap G. Further, since the
light-weight temporary bridge system 10 is realized in the
cable-stayed bridge structure, the vertical pulls provided by the
cables 108 can reduce the deformations generated by the live loads
(e.g. vehicles, motor cycles or people) moving on the crossing
structure-module 104 and the horizontal pulls provided by the
cables 108 tightens the connections between the segments
104_A-104_E of the crossing structure-module 104.
[0021] Note that, the weight balance structure-module 100 and the
bridge tower structure-module 102 are required to be realized by
the materials with greater density for providing the sufficient
counterweight. Moreover, in order to prolongs the length sustained
by the weight balance structure-module 100 and the bridge tower
structure-module 102, the main girders C_G of the crossing
structure-module 104 are required to be realized by the
light-weight composite materials, wherein the density of the
light-weight composite materials is required to be smaller than
that of the materials of the weight balance structure-module 100
and the bridge tower structure-module 102. For example, the
materials of the main girders W_G, T_G, the side girders W_SG, the
box beams W_BB, T_BB and the cross beams C_CB may be the steel, the
aluminum, the alloy of the steel and the aluminum, the concrete and
the reinforced concrete; and the materials of the main girders C_G
may be one of the Glass Fiber Reinforced Plastic (GFRP), the Carbon
Fiber Reinforced Plastic (CFRP), the Kevlar Fiber Reinforced
Plastic (KFRP), the Basalt Fiber Reinforced Plastic (BFRP), the
Hybrid Fiber Reinforced Plastic, . . . etc. and are not limited
herein.
[0022] Please refer to FIGS. 5A-5D, which are schematic diagrams of
the processes of constructing the light-weight temporary bridge
system 10 shown in FIG. 1. First, the workers may utilize the
working vehicle to lift 5 main girders W_G and 2 side girders W_SG
to parallel positions and utilize the bolts to connect the box
beams W_BB, the main girders W_G and the side girders W_SG. Via
repeating the above procedures, the segments 100_A-100_C can be
accomplished. Next, the workers lift the segments 100_A-100_C to
the fixed positions on the abutment A1 via the working vehicle and
connect the segments 100_A-100_C via the connecting plates (e.g.
steel web connecting plates), to form the weight balance
structure-module 100 shown in FIG. 5A. After the weight balance
structure-module 100 is accomplished, the workers may lay the
bridge deck plate on the weight balance structure-module 100 for
the subsequent constructions.
[0023] Next, the workers may lay multiple sleepers on the ground to
form a temporary working platform. The main girders T_G is lifted
to the temporary working platform and the distance between the main
girders T_G is greater than the length of the box beams T_BB. Via
lifting the box beams T_BB to the fixed locations, the workers
connect the main girders T_G and the box beams T_BB by the bolts
and the joists. In addition, the workers further assemble the
shackles utilized for fixing the cables 106, 108 to the main
girders T_G and sequentially connect the cables 106, 108 and the
shackles. The bridge tower structure-module 102 is lifted to the
top of the segment 100_C and connected to the side girders W_SG by
the bolts. The workers then assemble the cables 106 and the
shackles on the side girders W_SG of the segments 100_A-100_C and
adjust the lengths of the cables 106. After the above procedures,
the weight balance structure-module 100 and the bridge tower
structure-module 102 shown in FIG. 5B can be acquired.
[0024] When assembling the segment 104_A, the workers may utilize a
cross beam C_CB as a temporary assembling platform. After 5 main
girders C_G is moved to the fixed locations on the cross beams
C_CB, the workers connect the main girders C_G on the cross beams
C_CB and assemble a top flange stiffener, a bottom flange stiffener
(i.e. connecting plates) to the main girders C_G by few bolts for
avoiding the top flange stiffener and bottom flange stiffener drop.
After the above procedure is completed, the workers lift the
segment 104_A to the fixed location and connect the main girders
C_G of the segment 104_A and the main girders W_G of the segment
100_C by the steel web connecting plate, the prepositioned top part
stiffener, bottom part stiffener and the bolts. The workers then
assemble the cables 108 to the shackles of the cross beams C_CB and
adjust the lengths of the cables 108. Till the above procedure is
completed, the workers remove the cables of the working vehicle and
the segment 104_A is constructed above the gap G via the cantilever
method, as shown in FIG. 5C. For the subsequent constructions, the
works configure the positioning angle for fixing bridge deck plates
and lay the bridge deck plates on the segment 104_A.
[0025] Via repeating the procedures of assembling the segment 104_A
and connecting the segments 104_A and 100_C, the workers separately
accomplish the segments 104_B-104_D and sequentially connect the
segments 104_A-104_D. When assembling the segment 104_E, the worker
couple 5 main girders C_G to the positioning angle and lifting the
5 main girders C_G together with the positioning angle to the fixed
location. The workers then connect the segment 104_E to the segment
104_D via the steel web connect plate, the top flange stiffeners,
the bottom flange stiffener and the bolts, as shown in FIG. 5D.
Finally, the workers configure the positioning angle for fixing
bridge deck plates and lay the bridge deck plates on the segment
104_E and the light-weight temporary bridge system 10 realized in
the asymmetric cable-stayed bridge structure is completed. The
transport path between the abutments A1 and A2 is therefore
acquired.
[0026] Via utilizing the counterweight provided by the weight
balance structure-module 100 and the bridge tower structure-module
102 and the vertical/horizontal pulls provided by the cables 106
and 108, the segments 104_A-104_E of the crossing structure-module
104 are sequentially constructed between the abutments A1 and A2
(i.e. above the gap G) by the cantilever method. In other words,
the workers construct and complete the light-wright temporary
bridge system 10 at the abutment A1 and provide the path across the
gap G without building any foundation support at the gap G.
Furthermore, since the light-weight temporary bridge system 10 is
realized by the cable-stayed bridge structure, the vertical pulls
provided by the cables 108 can reduce the deformations generated by
the live loads (e.g. vehicles, motor cycles or people) moving on
the crossing structure-module 104 and the horizontal pulls provided
by the cables 108 tightens the connections between the segments
104_A-104_E of the crossing structure-module 104.
[0027] According to different applications and design concepts,
those with ordinary skill in the art may observe appropriate
alternations and modifications. For example, the numbers of the
segments in the weight balance structure-module 100, the bridge
tower structure-module 102 and the crossing structure-module 104
may change according to different design concepts and are not
limited to those shown in FIG. 1. In addition, the composition of
each segment and the connection method between segments in the
weight balance structure-module 100, the bridge tower
structure-module 102 and the crossing structure-module 104 can be
implemented in various methods and are not limited to those shown
in FIG. 2 and FIGS. 5A-5D.
[0028] The process of the above embodiments constructing the
light-weight temporary bridge system 10 can be summarized into a
process 60 shown in FIG. 6. The process 60 can be utilized in
building the light-weight temporary bridge system with the
asymmetric cable-stayed bridge structure and comprises the
following steps:
[0029] Step 600: Start.
[0030] Step 602: Construct a weight balance structure-module on a
first abutment.
[0031] Step 604: Couple a bottom part of a bridge tower structure
to the weight balance structure-module and coupling a top part of
the bridge tower structure and the weight balance structure-module
via at least one first cable.
[0032] Step 606: Construct a crossing structure-module between the
first abutment and a second abutment, wherein the crossing
structure-module is coupled to the weight balance structure-module
and is coupled to the top part of the bridge tower structure-module
via at least one second cables.
[0033] Step 608: End.
[0034] According to the process 60, the workers first assemble at
least one segment (e.g. the segments 100_A-100_C) of a weight
balance structure-module at a first abutment (e.g. the abutment A1)
and connect the at least one segment via the bolts and the connect
plate, to construct the weight balance structure-module. After
assembling a bridge tower structure-module, the workers connect the
bottom part of the bridge tower structure-module to the weight
balance structure-module and connect the top part of the bridge
tower structure-module and the weight balance structure-module via
at least one first cable (e.g. the cables 106). Next, the workers
assemble at least one segment (e.g. the segments 104_A-104_E) of a
crossing structure-module and utilize at least one second cables
(e.g. the cables 108) to sequentially complete the connections
between the weight balance structure-module and the at least one
segment of the crossing structure-module and the connections
between the at least one segment via the cantilever method. As a
result, the crossing structure-module is built between the first
abutment and a second abutment (e.g. the abutment A2) and a path
across the gap between the first abutment and the second abutment
is completed. The detail operations of the process 60 can be
referred to the above, and are not narrated herein for brevity.
[0035] To sum up, the above embodiments build the light-weight
temporary bridge system realized in the asymmetric cable-stayed
bridge structure via the modular components which are easy to be
transported. Via the counterweight provided by the weight balance
structure-module and the bridge tower structure-module and the
vertical/horizontal pulls provided by the cables, the crossing
structure-module across the gap can be built above the gap via the
cantilever method. In other words, the workers can construct and
complete the light-weight bridge system at a side of the gap
without building any foundation support at the gap, so as to
rapidly provide the path across the gap.
[0036] Those skilled in the art will readily observe that numerous
modifications and alterations of the device and method may be made
while retaining the teachings of the invention. Accordingly, the
above disclosure should be construed as limited only by the metes
and bounds of the appended claims.
* * * * *