CN212925729U - Combined beam bridge with cantilever arms for highway and railway dual-purpose box girders - Google Patents
Combined beam bridge with cantilever arms for highway and railway dual-purpose box girders Download PDFInfo
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- CN212925729U CN212925729U CN202021405710.XU CN202021405710U CN212925729U CN 212925729 U CN212925729 U CN 212925729U CN 202021405710 U CN202021405710 U CN 202021405710U CN 212925729 U CN212925729 U CN 212925729U
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Abstract
The embodiment of the application provides a highway-railway dual-purpose box girder combined beam bridge with cantilever arms, which comprises a steel box girder, two main trusses, a highway bridge deck system and a railway bridge deck system. The steel box girder comprises a box body and two cantilever arms, wherein the two cantilever arms are arranged on two transverse sides of the box body; the two main trusses are arranged on the lower side of the steel box girder and comprise lower chords and a plurality of web members, the two main trusses are arranged at intervals along the transverse bridge direction, and the web members are connected with the lower chords and the box body; the highway bridge deck system comprises a highway bridge deck, and the highway bridge deck is arranged on the steel box girder; the railway bridge deck system comprises a railway bridge deck and a plurality of first cross beams, the first cross beams are connected with lower chords of the two main trusses, and the railway bridge deck is arranged on the first cross beams. The highway-railway dual-purpose box girder combined beam bridge with the cantilever arms has large transverse and vertical bending resistance and large spanning capacity, and the transverse rigidity and the vertical rigidity of the highway-railway dual-purpose box girder combined beam bridge can meet the driving requirements of a high-speed train.
Description
Technical Field
The utility model relates to a bridge engineering field, in particular to highway-railway dual-purpose box purlin combination beam bridge of arm is chosen in area.
Background
With the rapid development of national economy and the rapid increase of traffic construction requirements, large-scale highway-railway combined-construction bridges which are being constructed and prepared to be constructed at home and abroad are more and more, and with the increasing running speed of trains, the requirements on the horizontal rigidity and the vertical rigidity of the highway-railway combined-construction bridges are continuously improved, whereas the highway-railway combined-construction bridges in the related technology are generally formed by steel trusses, and the conventional steel truss rod pieces are difficult to design and cannot meet the requirements.
SUMMERY OF THE UTILITY MODEL
In view of this, a main object of the embodiments of the present application is to provide a highway and railway dual-purpose box girder combined bridge with cantilever arms, so as to solve the technical problem that a highway and railway combined bridge in the related art is difficult to meet the requirements of horizontal and vertical rigidity required by high-speed train traveling.
In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:
the embodiment of the application provides a highway and railway dual-purpose case purlin combination beam bridge of arm is chosen in area, include:
the steel box girder comprises a box body and two cantilever arms, wherein the two cantilever arms are arranged on two transverse sides of the box body;
the two main trusses are arranged on the lower side of the steel box girder and comprise lower chords and a plurality of web members, the two main trusses are arranged at intervals along the transverse bridge direction, and the web members are connected with the lower chords and the box body;
the highway bridge deck system comprises a highway bridge deck, and the highway bridge deck is arranged on the steel box girder;
the railway bridge deck system comprises a railway bridge deck and a plurality of first cross beams, the first cross beams are connected with the lower chords of the two main trusses, and the railway bridge deck is arranged on the first cross beams.
Further, it includes along a plurality of second crossbeams that the longitudinal bridge set up to the interval to choose the arm, the second crossbeam include first web and with the edge of a wing that first web is connected, first web with the box with highway bridge panel connects, the edge of a wing is located the downside of first web.
Further, the second beam further comprises a first stiffening assembly disposed on the first web.
Further, the box body comprises a bottom wall plate, two first longitudinal beams and a plurality of third cross beams;
the two first longitudinal beams and the plurality of third cross beams are arranged on the bottom wall plate at intervals in the transverse bridge direction, the plurality of third cross beams are arranged between the two first longitudinal beams at intervals in the longitudinal bridge direction, and the two first longitudinal beams and the third cross beams are connected with the highway bridge panel;
each first longitudinal beam is connected with one corresponding cantilever arm;
the web members of each main truss are connected to a corresponding one of the first longitudinal beams.
Further, the third cross beam comprises a first diaphragm plate and a second stiffening assembly, and the second stiffening assembly comprises a transverse stiffening plate and a longitudinal stiffening plate;
the first diaphragm plates are arranged on the bottom wall plate and are arranged at intervals along the longitudinal bridge direction, and the highway bridge deck is connected with the first diaphragm plates;
the number of the transverse stiffening plates is at least two, the transverse stiffening plates are arranged on the first transverse partition plates at intervals along the vertical direction, and a plurality of the longitudinal stiffening plates are arranged between every two adjacent first transverse partition plates.
Furthermore, the third cross beam comprises two sub-beam bodies, each sub-beam body comprises the first diaphragm plate and the second stiffening assembly, the box body further comprises a second longitudinal beam, and the combined beam bridge of the highway and railway dual-purpose box girder with the cantilever arms further comprises a plurality of inhaul cable anchoring assemblies;
the second longitudinal beam is arranged on the bottom wall plate and is connected with the highway bridge deck;
the two sub-beam bodies are respectively arranged on two sides of the second longitudinal beam;
and the plurality of inhaul cable anchoring assemblies are arranged on the highway bridge deck and are positioned on the upper side of the second longitudinal beam.
Furthermore, the highway and railway dual-purpose box girder combined beam bridge with the cantilever arms further comprises a plurality of inhaul cable anchoring assemblies;
a plurality of cable anchor assembly sets up on the highway decking, and be located two respectively the upside of first longeron.
Further, the two main trusses are obliquely arranged, and the width between the top ends of the two main trusses is larger than the width between the bottom ends of the two main trusses.
Further, the railway bridge deck system further comprises small longitudinal beams, and a plurality of small longitudinal beams are arranged between every two adjacent first cross beams.
Further, it is characterized in that the highway bridge deck and the railway bridge deck are orthotropic steel bridge decks.
Further, the main truss is a walen truss, a triangular truss or an N-shaped truss; and/or the presence of a gas in the gas,
the web members are box-shaped members or H-shaped members.
The embodiment of the application provides a highway-railway dual-purpose box-girder combined beam bridge with cantilever arms, the highway-railway dual-purpose box-girder combined beam bridge with cantilever arms adopts a combined structure of a steel box girder and a main truss, wherein the steel box girder consists of a box body and two cantilever arms, the main truss is arranged on the lower side of the steel box girder, web members of the main truss are directly connected with the box body, a highway bridge deck system is connected with the steel box girder, and a railway bridge deck system is connected with the main truss, so that the highway-railway dual-purpose box-girder combined beam bridge with cantilever arms has large transverse and vertical bending moment resistance, is simple in cross section and large in spanning capacity, and further the transverse and vertical rigidity of the highway-railway dual-purpose box-girder combined beam bridge with cantilever arms can meet the driving requirements of a high-speed train.
Drawings
Fig. 1 is an elevation view of a highway and railway dual-purpose box girder composite girder bridge with a cantilever arm according to an embodiment of the present application;
FIG. 2 is a schematic view of the connection of the first cross member to the lower chord shown in FIG. 1;
FIG. 3 is a schematic view of the connection relationship between the second and third webs and the highway bridge deck shown in FIG. 1;
FIG. 4 is a schematic view of the connection between the lower chord, the second diaphragm and the railroad bridge deck shown in FIG. 1;
FIG. 5 is a schematic view showing the connection relationship between the steel box girder and the highway bridge deck shown in FIG. 1;
FIG. 6 is a schematic view of the connection between the second beam and the third bulkhead shown in FIG. 5;
FIG. 7 is a schematic view of the connection relationship between the first diaphragm, the second web, and the third web of the box body shown in FIG. 5 and the bottom wall plate.
Reference numerals:
a steel box girder 10; a case 11; a bottom wall panel 111; a third cross member 112; a first bulkhead 1121; a second stiffening assembly 1122; transverse stiffener plates 11221; longitudinal stiffener plates 11222; a first longitudinal beam 113; second web 1131; a third diaphragm 1132; a second stringer 114; a third web 1141; a fourth diaphragm 1142; a cantilever arm 12; a second cross member 121; a first web 1211; a flange 1212; a first stiffening component 122; a main girder 20; a lower chord 21; a web member 22; a road deck system 30; a highway bridge deck 31; a railway deck system 40; a railroad bridge panel 41; the first cross member 42; a second diaphragm 421; a third stiffening assembly 422; a minor longitudinal beam 43; a cable anchor assembly 50.
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
In the description of the present application, the "lateral," "up," "down" orientations or positional relationships are based on the orientations or positional relationships shown in fig. 1, it being understood that these directional terms are merely for convenience in describing the present application and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.
The embodiment of the application provides a highway and railway dual-purpose box and truss combined girder bridge with a pick arm, please refer to fig. 1, 4 and 5, and the highway and railway dual-purpose box and truss combined girder bridge with the pick arm comprises: steel box girder 10, main truss 20, highway deck system 30 and railway deck system 40. The steel box girder 10 includes a box body 11 and two cantilever arms 12, and the two cantilever arms 12 are disposed at both lateral sides of the box body 11. The number of the main trusses 20 is two, the two main trusses 20 are arranged on the lower side of the steel box girder 10, each main truss 20 comprises a lower chord 21 and a plurality of web members 22, the two main trusses 20 are arranged at intervals along the transverse bridge direction, and the lower chord 21 and the box body 11 are connected through the plurality of web members 22. The highway deck system 30 includes a highway deck 31, and the highway deck 31 is disposed on the steel box girder 10. The railway deck system 40 includes a railway deck 41 and a plurality of first cross members 42, the plurality of first cross members 42 connecting the lower chords 21 of the two main trusses 20, the railway deck 41 being provided on the plurality of first cross members 42.
That is to say, what the dual-purpose case purlin combination beam bridge of taking outrigger of this application adopted is the integrated configuration of steel box girder 10 and main truss 20, and wherein, steel box girder 10 comprises box 11 and two outriggers 12, and steel box girder 10 wholeness can be good, and the maintenance is convenient, easily weighs, when satisfying the rigidity requirement, can practice thrift the steel quantity. The upper chord is not arranged on the main truss 20, the web members 22 are directly connected with the box body 11, the web members 22 can be box-shaped members or H-shaped members, and meanwhile, the highway-railway dual-purpose box-truss combined beam bridge with the cantilever arms is not provided with the auxiliary truss, so that the main truss 20 can be conveniently manufactured into a triangular truss without a vertical rod, and the highway-railway dual-purpose box-truss combined beam bridge is suitable for various truss structures such as a Hualun truss, a triangular truss and an N-shaped truss.
The axial pressure that the girder of the dual-purpose case purlin combination beam bridge of arm is chosen in area of this application bore mainly by steel box girder 10, consequently, this dual-purpose case purlin combination beam bridge of arm is chosen in area of highway has great horizontal, vertical bending resistance nature not only, and the cross-section is succinct moreover, the leap ability is big, and horizontal and vertical rigidity can satisfy high-speed train's driving requirement.
In addition, because the axial pressure born by the main girder is mainly born by the steel box girder 10, and the main trusses 20 only play a role in participating in common stress, the structures such as upper flat longitudinal connection, middle transverse connection, bridge portal frames and the like do not need to be arranged between the two main trusses 20, so that the height of the main trusses 20 can be reduced, and further, the construction cost can be reduced while the steel consumption is saved.
In one embodiment, the highway bridge deck 31 and the railway bridge deck 41 are orthotropic steel bridge decks, and the orthotropic steel bridge decks are arranged, so that the self weight of the highway and railway dual-purpose box girder composite girder bridge with the cantilever arms 12 can be reduced. In addition, in the actual manufacturing process, the steel box girder 10 and the highway bridge deck 31 can be welded into a whole in a factory, the main truss 20, the railway bridge deck 41 and the plurality of first cross beams 42 can be welded into another whole, and then the two whole bodies are transported to a construction site for installation, so that the field assembly can be reduced, the quality is ensured, and the construction speed can be greatly improved.
Referring to fig. 1, 5 and 6, in one embodiment, the cantilever arm 12 includes a plurality of second beams 121 spaced apart along the longitudinal bridge direction, the second beams 121 include a first web 1211 and a flange 1212 connected to the first web 1211, the first web 1211 is connected to the box 11 and the highway bridge deck 31, and the flange 1212 is located under the first web 1211. That is to say, the cantilever 12 may be formed by a plurality of second beams 121 in an inverted T shape, instead of being provided with a closed structure having a bottom plate, so that the steel amount of the bottom plate may be omitted while the requirement of rigidity is satisfied, and further, the self weight of the combined bridge of the highway and railway dual-purpose box girder with the cantilever may be reduced, and the production cost may also be saved.
Referring to fig. 5, in an embodiment, the second beam 121 further includes a first stiffening assembly 122, and the first stiffening assembly 122 is disposed on the first web 1211, and specifically, the first stiffening assembly 122 may include a plurality of stiffening plates, and the plurality of stiffening plates may be disposed vertically all together, or may be disposed vertically partially, and disposed laterally partially, so that the first web 1211 may be reinforced to improve the strength and rigidity of the second beam 121.
Referring to fig. 3, 5 and 7, in one embodiment, the box 11 includes a bottom wall 111, two first longitudinal beams 113, and a plurality of third transverse beams 112, wherein the first longitudinal beams 113 include two second webs 1131 spaced apart from each other, and a plurality of third transverse partitions 1132 disposed between the two second webs 1131. Two first longerons 113 and a plurality of third crossbeam 112 all set up on diapire board 111, and two first longerons 113 set up along horizontal bridge to the interval, and a plurality of third crossbeam 112 set up between two first longerons 113, and set up along vertical bridge to the interval, and two first longerons 113 and third crossbeam 112 all are connected with highway bridge panel 31. Each first longitudinal beam 113 is connected to a corresponding one of the cantilever arms 12. The web members 22 of each main girder 20 are connected to a corresponding one of the first longitudinal girders 113.
Referring to fig. 5, in one embodiment the third beam 112 includes first bulkhead 1121 and second stiffening members 1122, and the second stiffening members 1122 include transverse stiffening plates 11221 and longitudinal stiffening plates 11222. The first cross partitions 1121 are disposed on the bottom wall 111 and spaced apart along the longitudinal bridge direction, and the highway bridge deck 31 is connected to the first cross partitions 1121. The number of the transverse stiffening plates 11221 is at least two, at least two transverse stiffening plates 11221 are vertically arranged on the first transverse partition plates 1121 at intervals, and a plurality of longitudinal stiffening plates 11222 are arranged between every two adjacent first transverse partition plates 1121. The provision of transverse stiffener plates 11221 and longitudinal stiffener plates 11222 may significantly increase the stiffness of the third cross beam 112 due to the greater axial pressure to which the box 11 is subjected.
Referring to fig. 1, 3 and 5, in one embodiment, the third beam 112 includes two sub-beams including first bulkheads 1121 and second stiffening assemblies 1122, i.e., the third beam 112 actually includes two first bulkheads 1121 and two second stiffening assemblies 1122. The box body 11 further comprises a second longitudinal beam 114, the second longitudinal beam 114 comprises two third webs 1141 arranged at intervals and a plurality of fourth diaphragm plates 1142 arranged between the two third webs 1141, and the highway and railway dual-purpose box and truss combined girder bridge with the cantilever arms further comprises a plurality of stay cable anchoring assemblies 50. The second longitudinal beam 114 is provided on the bottom wall plate 111, and is connected to the highway bridge deck 31. The two sub-beam bodies are respectively disposed on both sides of the second longitudinal beam 114. A plurality of cable anchor assemblies 50 are provided on the highway deck 31 on the upper side of the second longitudinal beam 114. That is to say, the guy cable of the combined beam bridge with the pick arm for the highway and railway box and the truss can be arranged on the longitudinal central line of the highway bridge deck 31, that is, the combined beam bridge with the pick arm 12 for the highway and railway box and the truss can be a cable-stayed bridge with a central cable plane, thereby being convenient for the model selection of the bridge tower of the long-span bridge and improving the overall landscape.
In a specific embodiment, a plurality of cable anchoring assemblies 50 may also be provided on the highway bridge deck 31, each on the upper side of two first longitudinal beams 113. That is to say, the guy cable of the combined beam bridge with the cantilever arm for the highway and railway box and the truss can be arranged on two sides of the highway bridge panel 31, that is, the combined beam bridge with the cantilever arm for the highway and railway box and the truss can also be a cable-stayed bridge with double cable planes, so that different design requirements can be met. It should be noted that, when the plurality of cable anchoring assemblies 50 are respectively disposed on the upper sides of the two first longitudinal beams 113, the second longitudinal beam 114 may not be disposed on the box body 11, which is equivalent to the third cross beam 112 being an integral structure without being divided into two sub-beam bodies.
Referring to fig. 1, in one embodiment, two main trusses 20 are disposed obliquely, and a width between top ends of the two main trusses 20 is greater than a width between bottom ends of the two main trusses 20. That is, the main girder 20 may have a truss structure, so that the width of the railroad bridge panel 41 may be reduced, thereby saving space and reducing construction costs.
Referring to fig. 1, in a specific embodiment, the first cross beam 42 includes a second diaphragm plate 421 and a third stiffening assembly 422, and the third stiffening assembly 422 is disposed on the second diaphragm plate 421, specifically, the third stiffening assembly 422 may also include a plurality of stiffening plates, and the plurality of stiffening plates may be disposed vertically all, or may be disposed vertically partially, and disposed laterally partially, so that the second diaphragm plate 421 may be reinforced to improve the strength and rigidity of the first cross beam 42.
Referring to fig. 1, in a specific embodiment, the railway deck system 40 further includes small longitudinal beams 43, and a plurality of small longitudinal beams 43 are disposed between every two adjacent first transverse beams 42. The small longitudinal beams 43 have simple structure, and can reduce the construction cost while improving the strength and rigidity of the railway deck system 40 and improving the driving conditions.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. The utility model provides a highway railway dual-purpose case purlin combination beam bridge of arm is chosen in area which characterized in that includes:
the steel box girder comprises a box body and two cantilever arms, wherein the two cantilever arms are arranged on two transverse sides of the box body;
the two main trusses are arranged on the lower side of the steel box girder and comprise lower chords and a plurality of web members, the two main trusses are arranged at intervals along the transverse bridge direction, and the web members are connected with the lower chords and the box body;
the highway bridge deck system comprises a highway bridge deck, and the highway bridge deck is arranged on the steel box girder;
the railway bridge deck system comprises a railway bridge deck and a plurality of first cross beams, the first cross beams are connected with the lower chords of the two main trusses, and the railway bridge deck is arranged on the first cross beams.
2. The highway and railway box girder composite girder bridge with the cantilever arm according to claim 1, wherein the cantilever arm comprises a plurality of second cross beams arranged at intervals along the longitudinal bridge direction, the second cross beams comprise a first web and a flange connected with the first web, the first web is connected with the box body and the highway bridge deck, and the flange is positioned on the lower side of the first web.
3. The convertible highway and railway truss composite girder bridge with cantilever arm according to claim 2, wherein the second beam further comprises a first stiffening assembly, and the first stiffening assembly is arranged on the first web.
4. The combined beam bridge with cantilever beams for highway and railway containers as claimed in any one of claims 1-3, wherein the box body comprises a bottom wall plate, two first longitudinal beams and a plurality of third cross beams;
the two first longitudinal beams and the plurality of third cross beams are arranged on the bottom wall plate at intervals in the transverse bridge direction, the plurality of third cross beams are arranged between the two first longitudinal beams at intervals in the longitudinal bridge direction, and the two first longitudinal beams and the third cross beams are connected with the highway bridge panel;
each first longitudinal beam is connected with one corresponding cantilever arm;
the web members of each main truss are connected to a corresponding one of the first longitudinal beams.
5. The convertible box girder composite girder bridge with outriggers of claim 4, wherein the third beam comprises a first diaphragm plate and a second stiffening assembly, the second stiffening assembly comprising a transverse stiffening plate and a longitudinal stiffening plate;
the first diaphragm plates are arranged on the bottom wall plate and are arranged at intervals along the longitudinal bridge direction, and the highway bridge deck is connected with the first diaphragm plates;
the number of the transverse stiffening plates is at least two, the transverse stiffening plates are arranged on the first transverse partition plates at intervals along the vertical direction, and a plurality of the longitudinal stiffening plates are arranged between every two adjacent first transverse partition plates.
6. The convertible case and girder composite girder bridge with outriggers according to claim 5, wherein the third beam comprises two sub-beams, the sub-beams comprise the first diaphragm plate and the second stiffening component, the box body further comprises a second longitudinal girder, and the convertible case and girder composite girder bridge with outriggers further comprises a plurality of cable anchoring components;
the second longitudinal beam is arranged on the bottom wall plate and is connected with the highway bridge deck;
the two sub-beam bodies are respectively arranged on two sides of the second longitudinal beam;
and the plurality of inhaul cable anchoring assemblies are arranged on the highway bridge deck and are positioned on the upper side of the second longitudinal beam.
7. The convertible case and girder composite girder bridge with outrigger according to claim 4, wherein the convertible case and girder composite girder bridge with outrigger further comprises a plurality of cable anchoring assemblies;
a plurality of cable anchor assembly sets up on the highway decking, and be located two respectively the upside of first longeron.
8. The highway-railway box girder composite beam bridge with the cantilever arm according to any one of claims 1 to 3, wherein the two main girders are arranged obliquely, and the width between the top ends of the two main girders is larger than the width between the bottom ends of the two main girders.
9. The highway and railway dual-purpose box girder combined beam bridge with cantilever arms as claimed in any one of claims 1 to 3, wherein the railway bridge deck system further comprises small longitudinal beams, and a plurality of small longitudinal beams are arranged between every two adjacent first transverse beams.
10. The highway and railway box girder composite girder bridge with cantilever arms as claimed in any one of claims 1 to 3, wherein the highway bridge deck and the railway bridge deck are both orthotropic steel bridge decks.
11. The highway-railway dual-purpose box girder composite beam bridge with the cantilever arm according to any one of claims 1 to 3, wherein the main truss is a Huarong truss, a triangular truss or an N-shaped truss; and/or the presence of a gas in the gas,
the web members are box-shaped members or H-shaped members.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021405710.XU CN212925729U (en) | 2020-07-16 | 2020-07-16 | Combined beam bridge with cantilever arms for highway and railway dual-purpose box girders |
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| CN202021405710.XU CN212925729U (en) | 2020-07-16 | 2020-07-16 | Combined beam bridge with cantilever arms for highway and railway dual-purpose box girders |
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