U.S. patent application number 11/442162 was filed with the patent office on 2006-12-07 for fiber reinforced plastics bearing deck module having integrated shear connector and concrete composite bearing deck using the same.
Invention is credited to Won Jong Chin, Jeong Rae Cho, Keun Hee Cho, Byung-Suk Kim, Sung Tai Kim, Sung Yong Park.
Application Number | 20060272111 11/442162 |
Document ID | / |
Family ID | 37492650 |
Filed Date | 2006-12-07 |
United States Patent
Application |
20060272111 |
Kind Code |
A1 |
Kim; Byung-Suk ; et
al. |
December 7, 2006 |
Fiber reinforced plastics bearing deck module having integrated
shear connector and concrete composite bearing deck using the
same
Abstract
A fiber reinforced plastics (FRP) bearing deck module having
integrated a shear connector and a concrete composite bearing deck
using the same are provided. The FRP bearing deck module has an
upper flange and a lower flange separated from each other by a
predetermined height; a side web provided between the upper flange
and the lower flange and forming a hollow portion longitudinally
extended in a transverse direction to constitute a tubular shape; a
shear connector protruded in a transverse direction and integrated
to an upper part of the upper flange when draw-forming the FRP
bearing deck module; and a fiber continuously arranged along an
inside of the shear connector.
Inventors: |
Kim; Byung-Suk; (Goyang,
KR) ; Cho; Keun Hee; (Goyang, KR) ; Cho; Jeong
Rae; (Goyang, KR) ; Park; Sung Yong; (Goyang,
KR) ; Chin; Won Jong; (Goyang, KR) ; Kim; Sung
Tai; (Goyang, KR) |
Correspondence
Address: |
DICKSTEIN SHAPIRO LLP
1825 EYE STREET NW
Washington
DC
20006-5403
US
|
Family ID: |
37492650 |
Appl. No.: |
11/442162 |
Filed: |
May 30, 2006 |
Current U.S.
Class: |
14/73 |
Current CPC
Class: |
E01D 2101/40 20130101;
E01D 19/125 20130101; E01D 2101/26 20130101 |
Class at
Publication: |
014/073 |
International
Class: |
E01D 19/12 20060101
E01D019/12 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 2, 2005 |
KR |
10-2005-0047435 |
Claims
1. A fiber reinforced plastics (FRP) bearing deck module forming a
deck panel of a concrete composite bearing deck, the module
comprising: an upper flange and a lower flange separated from each
other by a predetermined height; a side web provided between the
upper flange and the lower flange and forming a hollow portion
longitudinally extended in a transverse direction to constitute a
tubular shape; a shear connector protruded in a transverse
direction and integrated to an upper part of the upper flange when
draw-forming the FRP bearing deck module; and a fiber continuously
arranged along an inside of the shear connector.
2. The FRP bearing deck module as claimed in claim 1, wherein the
shear connector is provided with a protrusion web on the upper
flange and the web is continuously formed in a transverse
direction.
3. The FRP bearing deck module as claimed in claim 2, wherein the
protrusion web of the shear connector is formed with a
through-hole.
4. A concrete composite bearing deck of a fiber reinforced plastics
(FRP) deck panel and a concrete slab thereon, the FRP deck panel
comprising plural FRP bearing deck modules assembled, each of the
FRP bearing deck modules comprising: an upper flange and a lower
flange separated from each other by a predetermined height; a side
web provided between the upper flange and the lower flange and
forming a hollow portion longitudinally extended in a transverse
direction to constitute a tubular shape; a shear connector
protruded in a transverse direction and integrated to an upper part
of the upper flange when draw-forming the FRP bearing deck module;
and a fiber continuously arranged along an inside of the shear
connector.
5. The concrete composite bearing deck as claimed in claim 4,
wherein the shear connector is provided with a protrusion web on
the upper flange and the web is continuously formed in a transverse
direction.
6. The concrete composite bearing deck as claimed in claim 5,
wherein the protrusion web of the shear connector is formed with a
through-hole.
7. The concrete composite bearing deck as claimed in claim 6,
wherein the concrete slab comprises a reinforcing rod arranged
through the through-hole.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims all benefits of Korean Patent
Application No. 2005-47435 filed on Jun. 2, 2005 in the Korean
Intellectual Property Office, the disclosures of which are
incorporated herein by reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to a fiber reinforced plastics
bearing deck module having integrated a shear connector and a
concrete composite bearing deck using the same, and more
particularly to a novel fiber reinforced plastics (hereinafter,
referred to as "FRP") bearing deck module having integrated a shear
connector so that a concrete slab is integrated with a FRP bearing
deck module so as to form a structural integration of the concrete
slab and a FRP deck panel from the manufacture of the FRP bearing
deck module, when the FRP bearing deck modules are assembled to
form the FRP deck panel and then the concrete slab is integrally
connected to the deck panel to manufacture a bearing deck, and a
concrete composite bearing deck using the module.
[0004] 2. Description of the prior art
[0005] A composite of a reinforcing rod concrete slab and a FRP
deck panel has been suggested as a bearing deck used for an
engineering structure such as bridge. FIG. 11 is a schematic
perspective view of a concrete composite bearing deck disclosed in
a Korean patent application No. 10-2002-40869 which was filed by
the applicant. The concrete composite bearing deck 1 comprises a
deck panel 10 and a concrete slab 20 having a thickness and
integrally connected to an upper part of the deck panel 10. The
deck panel 10 can be made of FRP and includes an upper flange 11
and a lower flange 12 which are separated from each other by a
predetermined height, and a plurality of hollow portions 14 formed
by side webs 13 between the upper flange 11 and the lower flange 12
are continuously formed in a line in a longitudinal direction (for
example, bridge direction). Each of the hollow portions 14 is
lengthwise formed in a transverse direction (for example, direction
perpendicular to the bridge) to constitute a tubular shape.
[0006] In general, the deck panel 10 is structured by assembling
FRP bearing deck modules having the several hollow portions 14, and
the concrete slab 20 is integrally connected on the deck panel 10.
The upper flange 11 of the deck panel 10 is used as a molding flask
and the concrete is poured therein by a predetermined height to
form the concrete slab 20.
[0007] In the mean time, in the concrete composite bearing deck
consisting of the deck panel 10 and the concrete slab 20, it is
very important to firmly combine the deck panel 10 with the
concrete slab 20. In order to combine the deck panel 10 with the
concrete slab 20, it has been conventionally suggested that a steel
stud 15 is screwed on an upper surface of the upper flange 11 of
the deck panel 10 as a shear connector. However, this method is not
preferred since the different materials (steel/FRP) are connected.
Further, since a screw hole should be formed in the upper flange 11
of the deck panel 10 so as to screw the stud, further works and
costs are correspondingly required.
[0008] In the mean time, a method may be considered to attach a
separate shear connector to the upper flange 11 with an adhesive.
However, it has not been known how to attach what kind of the shear
connector. In addition, even if the shear connector could be
attached to the upper flange 11 with the adhesive, the attachment
work is troublesome because each of the shear connectors should be
attached one by one. In particular, shear stress may be
concentrated on the connection area of the shear connector and the
upper flange 11. In this case, even if the shear connector and the
upper flange 11 are connected with the adhesive, the connection
area may be easily damaged due to the concentrated stress.
[0009] Accordingly, it is needed a novel technology capable of
achieving a firm structural composite of the deck panel 10 and the
upper concrete slab 20 with less cost and works.
SUMMARY OF THE INVENTION
[0010] Accordingly, the present invention has been made to solve
the above problems. An object of the invention is to provide a FRP
bearing deck module having a new structure capable of achieving a
firm structural composite of a FRP deck panel and a concrete slab
with less cost and works, and a concrete composite bearing deck
using the same.
[0011] In order to achieve the above object, there is provided a
fiber reinforced plastics (FRP) bearing deck module forming a deck
panel of a concrete composite bearing deck, comprising: an upper
flange and a lower flange separated from each other by a
predetermined height; a side web provided between the upper flange
and the lower flange and forming a hollow portion longitudinally
extended in a transverse direction to constitute a tubular shape; a
shear connector protruded in a transverse direction and integrated
to an upper part of the upper flange when draw-forming the FRP
bearing deck module; and a fiber continuously arranged along an
inside of the shear connector.
[0012] According to an embodiment of the invention, the shear
connector may have a web protruded upwardly which may be
continuously formed in a transverse direction and the web may be
formed with a through-hole.
[0013] According to the invention, there is provided a concrete
composite bearing deck of a fiber reinforced plastics deck panel
consisting of plural FRP bearing deck modules assembled and a
concrete slab thereon, each of the FRP bearing deck modules
comprising: an upper flange and a lower flange separated from each
other by a predetermined height; a side web provided between the
upper flange and the lower flange and forming a hollow portion
longitudinally extended in a transverse direction to constitute a
tubular shape; a shear connector protruded in a transverse
direction and integrated to an upper part of the upper flange when
draw-forming the FRP bearing deck module; and a fiber continuously
arranged along an inside of the shear connector.
[0014] According to an embodiment of the invention, the shear
connector may have a web protruded upwardly which may be
continuously formed in a transverse direction and the web may be
formed with a through-hole.
[0015] According to an embodiment of the invention, the concrete
slab may be provided with a reinforcing rod which is arranged
through the through-hole.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The above and other objects, features and advantages of the
present invention will be more apparent from the following detailed
description taken in conjunction with the accompanying drawings, in
which:
[0017] FIG. 1 is a schematic perspective view showing a concrete
composite bearing deck according to an embodiment of the invention
laid on a girder;
[0018] FIG. 2 is a schematic perspective view showing a preferred
embodiment of a FRP bearing deck module according to the invention
constituting a FRP deck panel of the concrete composite bearing
deck shown in FIG. 1;
[0019] FIG. 3 is a schematic perspective view showing another
preferred embodiment of a FRP bearing deck module of the
invention;
[0020] FIG. 4 is a enlarged view showing a fiber arrangement in a
part of a FRP bearing deck module of the invention where a shear
connector is formed;
[0021] FIG. 5 is a partially enlarged perspective view of a FRP
bearing deck module, which shows a preferred example of a shear
connector provided to the FRP bearing deck module of the
invention;
[0022] FIG. 6 is a partially enlarged perspective view of a FRP
bearing deck module, which shows another preferred example of a
shear connector provided to the FRP bearing deck module of the
invention;
[0023] FIG. 7 is a partially enlarged perspective view of a FRP
bearing deck module, which shows still another preferred example of
a shear connector provided to the FRP bearing deck module of the
invention;
[0024] FIG. 8 is a partially enlarged perspective view of a FRP
bearing deck module, which shows still another preferred example of
a shear connector provided to the FRP bearing deck module of the
invention;
[0025] FIG. 9 is a partially enlarged perspective view which
schematically shows a preferred arrangement form of a reinforcing
rod of a concrete slab under state that a shear connector is
embedded in the concrete slab in a bearing deck of the
invention;
[0026] FIG. 10 is a partially enlarged perspective view which
schematically shows another preferred arrangement form of a
reinforcing rod of a concrete slab under state that a shear
connector is embedded in the concrete slab in a bearing deck of the
invention; and
[0027] FIG. 11 is a perspective view schematically showing a
concrete composite bearing deck according to the prior art.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0028] Hereinafter, a preferred embodiment of the present invention
will be described with reference to the accompanying drawings. In
the following description of the present invention, a detailed
description of known functions and configurations incorporated
herein will be omitted when it may make the subject matter of the
present invention rather unclear.
[0029] FIG. 1 is a schematic perspective view showing a concrete
composite bearing deck 100 according to an embodiment of the
invention laid on a girder 400, FIG. 2 is a schematic perspective
view showing a preferred embodiment of a FRP bearing deck module
200 according to the invention constituting a FRP deck panel 110 of
the concrete composite bearing deck 100, and FIG. 3 is a schematic
perspective view showing another preferred example of the FRP
bearing deck module 200 of the invention.
[0030] As shown in FIG. 1, the concrete composite bearing deck 100
according to an embodiment of the invention comprises a FRP deck
panel 110 and a concrete slab 120 having a thickness and integrally
connected to an upper part of the deck panel 110. For convenience
sake, the concrete slab 120 is shown with a dot-dash line in FIG.
1. The FRP deck panel 110 may consist of the plural FRP bearing
deck modules assembled. According to the invention, as shown in
FIGS. 2 and 3, the FRP bearing deck module 200 comprises an upper
flange 201 and a lower flange 202 separated from each other by a
predetermined height, and hollow portions 204 formed by side webs
203 provided between the upper flange 201 and the lower flange 202.
The hollow portions 204 are continuously formed in a line in a
longitudinal direction (for example, bridge direction) while being
longitudinally formed in a transverse direction (for example,
direction perpendicular to the bridge) to constitute a tubular
shape.
[0031] In the invention, the FRP bearing deck module 200 is formed
with a shear connector 205 integrated to the upper flange 201. The
FRP bearing deck module 200 is manufactured by a draw-forming in a
transverse direction, wherein the shear connector 205 is integrally
draw-formed while being protruded from the upper flange 201.
Specifically, the shear connector 205 integrated to the upper
flange 201 comprises, as shown in FIGS. 2 and 3, a web 215 and an
upper flange 225 and the web 215 is integrated to the upper flange
201.
[0032] At this time, in order for the shear connector 205 to be
integrated to the other parts of the FRP bearing deck module 200,
including the upper flange 201, a fiber 300 arranged to the FRP
bearing deck module 200 is continuously arranged over the shear
connector 205 and the side web 203. FIG. 4 is an enlarged view
showing a fiber arrangement in a part of the FRP bearing deck
module 200 of the invention where the shear connector 205 is
formed. As shown in FIG. 4, the fiber 300 constituting the FRP is
continuously arranged over the shear connector 205 and the side web
203. At this time, it is preferred that the fiber 300 is formed
into a mat-type having a lattice shape. The fiber 300 may extend to
the lower flange 202 beyond the shear connector 205 and the side
web 203, and may be continuously arranged over the shear connector
205 and the upper flange 201. The continuous arrangements of the
fiber 300 may be combined each other.
[0033] Like this, according to the invention, when the FRP bearing
deck module 200 is draw-formed, it is manufactured with the shear
connector 200 being integrated to the upper flange 01. Therefore,
contrary to the prior art, a troublesome work is not necessary
where a separate shear connector should be later equipped to the
upper flange. In particular, as described above, since the fiber
300 arranged to the FRP bearing deck module is continuously
arranged over the shear connector 205 and the side web 203 and/or
the upper flange 201 and/or the lower flange 202, the shear
connector 205 and the FRP bearing deck module 200 are firmly
integrated. Accordingly, .even though the shear stress is
concentrated on a connection part of the shear connector 205 and
the FRP bearing deck module 200, the shear connector 205 can
exhibit sufficient shear rigidity. In addition, in the above
embodiment of the invention, since the shear connector 205 is
formed into a beam shape and provided to the FRP bearing deck
module in a transverse direction, it serves as a reinforcement
member for the concrete composite bearing deck 100 in the
transverse direction thereof (direction perpendicular to the
bridge), thereby remarkable increasing the transverse rigidity of
the concrete composite bearing deck 100.
[0034] In the mean time, according to the invention, the assembly
structure of the FRP bearing deck module itself has a protrusion
240 formed on a side of the FRP bearing deck module 200 and a
recess 242 formed on the other side thereof, so that the protrusion
240 of the one FRP bearing deck module 200 can be received in the
recess 242' of the neighboring FRP bearing deck module 200', as
shown in FIG. 2. As a consequence, it is possible to continuously
assemble the plural FRP bearing deck modules 200 through such
manner.
[0035] In addition to the above structure, the connection structure
of the neighboring FRP bearing deck modules 200 can be modified in
various manners. For example, as shown in FIG. 3, recesses 218,
218' are provided to each of the lower flanges 202, 202' of the
neighboring FRP bearing deck modules 200, 200' so that they are
connected to each other, the side webs 203, 203' of the neighboring
FRP bearing deck modules 200, 200' are adhered with an adhesive and
then a connection plate 216 is adhered to the recesses 218,
218'.
[0036] FIGS. 5 to 8 are partially enlarged perspective views of the
FRP bearing deck module, which show modified examples of the shear
connector 205. As shown in FIG. 5, if through-holes 235 are formed
in the web 215 of the shear connector 205, the concrete is cured
with flowing between the through-holes 235 when the shear connector
205 is embedded in the concrete slab 120 (see FIG. 1). Accordingly,
it is possible to achieve the firmer mechanical composite and shear
connection between the concrete slab 120 and the deck panel 110
(see FIG. 1), so that the structural integration is further
enhanced.
[0037] In addition to the embodiment wherein the web 215 and the
upper flange 225 are provided, the shape of the shear connector 205
may be modified in such a way that the upper flange 225 is formed
in one direction only as shown in FIG. 6, or the upper flange 225
is omitted as shown in FIG. 7 and FIG. 8.
[0038] In the mean time, according to the invention, the shear
connector 205 is very usefully used to equip the reinforcing rod to
the concrete slab 120. FIGS. 9 and 10 are partially enlarged
perspective views schematically showing that reinforcing rods 121
of the concrete slab 120 are arranged using the shear connector 205
under state that the shear connector 205 is embedded in the
concrete slab 120.
[0039] As shown in FIG. 9, when the reinforcing rods 121 are
arranged in the concrete slab 120, the shear connector 205 can be
used as a support member for the reinforcing rods 121. In addition,
as shown in FIG. 10, in case that the through-holes 235 are formed
in the web 215 of the shear connector 205, the reinforcing rods 121
are arranged to pass through the through-holes 235. For reference,
although the upper flange is not provided to the shear connector
205 in FIG. 10, the structure of inserting the reinforcing rods 121
into the through-holes 235 of the web 215 can be applied to the
shear connector having the upper flange. Likewise, the structure of
laying the reinforcing rods 121 on the shear connector can be
applied to a shear connector having no upper flange, in addition to
the embodiment shown in FIG. 9.
[0040] According to the invention, the FRP bearing deck modules 200
integrated with the shear connector 205 are assembled each other to
constitute the FRP deck panel 110, and the concrete slab 120 is
poured so that the shear connector 205 is integrally embedded above
the FRP deck panel 110 with the FRP deck panel 110 being equipped
to the girder, thereby forming the concrete composite bearing deck
100. At this time, in order to further enhance the connection
between the concrete slab 120 and the upper surface of the FRP deck
panel 110, the upper surface of the FRP deck panel 110 is
preferably coarsened by coating silica sands, for example.
[0041] As described above, according to the invention, the FRP
bearing deck module is draw-formed under state that the FRP shear
connector is integrally provided to the upper surface of the FRP
bearing deck module constituting the FRP deck panel. Accordingly,
contrary to the prior art, a troublesome work is not necessary
where a separate shear connector should be later equipped to the
FRP deck panel.
[0042] In addition, since the shear connector is integrally
provided from the manufacture of the FRP bearing deck module, it is
possible to achieve the firm structural composite between the FRP
deck panel and the concrete slab without the troublesome work and
the costs.
[0043] Additionally, according to the invention, since the shear
connector is integrally provided in the transverse direction of the
FRP deck panel, the transverse rigidity of the concrete composite
bearing deck is further increased.
[0044] In particular, the shear connector can be very usefully used
as the means for supporting the reinforcing rods when the
reinforcing rods are arranged in the concrete slab.
[0045] While the invention has been shown and described with
reference to certain preferred embodiments thereof, it will be
understood by those skilled in the art that various changes in form
and details may be made thereto without departing from the spirit
and scope of the invention as defined by the appended claims.
* * * * *