CN219364289U - Assembled steel truss-concrete composite beam and composite bridge - Google Patents

Assembled steel truss-concrete composite beam and composite bridge Download PDF

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Publication number
CN219364289U
CN219364289U CN202320662610.2U CN202320662610U CN219364289U CN 219364289 U CN219364289 U CN 219364289U CN 202320662610 U CN202320662610 U CN 202320662610U CN 219364289 U CN219364289 U CN 219364289U
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concrete
concrete composite
steel truss
bridge
precast concrete
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CN202320662610.2U
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Chinese (zh)
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周帅
李璋
于鹏
方聪
杨坚
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China Construction Fifth Engineering Bureau Co Ltd
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China Construction Fifth Engineering Bureau Co Ltd
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Abstract

The utility model relates to the field of bridges, in particular to an assembled steel truss-concrete composite beam and a composite bridge, which are characterized in that a connecting node is arranged on a precast concrete panel and is connected with a web member on a lower chord member, so that the traditional construction process is improved.

Description

Assembled steel truss-concrete composite beam and composite bridge
Technical Field
The utility model relates to the field of bridges, in particular to an assembled steel truss-concrete composite beam and a composite bridge.
Background
Compared with the traditional steel box girder and concrete, the steel truss-concrete composite bridge has the advantages that the steel truss structure can obviously reduce the self weight of the structure, improve the crossing capacity, has good wind resistance and good economic effect, and can have aesthetic functions, so that the composite structure bridge, in particular the steel truss-concrete composite girder, has wide development space.
At present, as shown in fig. 1, most of steel truss-concrete composite bridges in China are provided with concrete bridge decks 4 on upper chords 3, the upper chords 3 and the concrete bridge decks 4 bear the pressure of bridge tops together, and the concrete bridge decks 4 are cast-in-situ or prefabricated in blocks, but have a series of problems of low assembly degree, more field operation, long construction period, low utilization rate of the material strength of a compression zone and the like.
Disclosure of Invention
The utility model aims at: aiming at the problems existing in the background technology, the assembled steel truss-concrete composite beam and the assembled bridge are provided to solve the problems of low assembly degree, more field operation, long construction period, low utilization rate of the material strength of the pressed area and the like of the traditional steel truss-concrete composite bridge, thereby achieving the purposes of quick assembly, reasonable structural stress and high material utilization rate.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the assembled steel truss-concrete composite beam comprises a precast concrete panel and a lower chord member, wherein the lower chord member is connected with a web member, the precast concrete panel is provided with a connecting node, and the web member is connected with the connecting node.
According to the fabricated steel truss-concrete composite beam, the connecting nodes are arranged on the precast concrete panels and are connected with the web members on the lower chords, so that the traditional construction process is improved, namely, the upper chords and the lower chords are assembled into a whole, then, the concrete bridge panel is applied to the upper chords, the upper chords and the concrete bridge panel bear the pressure of a bridge roof together, the fabricated steel truss-concrete composite beam is eliminated, the precast concrete panel can be matched with the lower chords through the connecting nodes, the concrete compression performance of the precast concrete panel and the steel tension performance of the lower chords are fully utilized, the material utilization rate is high, and materials are saved.
As a preferred aspect of the present utility model, at least two web members are disposed between the connection node and the lower chord member, wherein the at least two web members and the lower chord member enclose a triangle through the connection node.
As a preferred embodiment of the present utility model, the precast concrete panel connects at least two of the lower chords.
As a preferable scheme of the utility model, the connecting joint comprises a bolt plate, a connecting steel plate and a shear pin group, wherein the shear pin group is connected to the top surface of the connecting steel plate, the bolt plate is connected to the bottom surface of the connecting steel plate, and the bolt plate is connected with the web member through bolts.
As a preferable scheme of the utility model, the precast concrete panel is provided with a post-pouring notch, and the connecting node is arranged at the post-pouring notch.
As a preferable mode of the utility model, the area of the connecting steel plate is larger than the area of the post-pouring notch, and the connecting steel plate is abutted against the bottom surface of the precast concrete panel.
As a preferred aspect of the utility model, the shear pin group is mounted within the post-pouring slot.
The application also discloses an assembled steel truss-concrete composite bridge, which comprises a bridge body, wherein the bridge body comprises the assembled steel truss-concrete composite beam.
The assembled steel truss-concrete combined bridge is formed by assembling the combined beams consisting of the precast concrete panels and the lower chords, and compared with the traditional construction process, the assembled steel truss-concrete combined bridge can simplify the construction process, effectively reduce the installation time of the bridge, simultaneously realize the full precast assembly of the bridge, and remarkably reduce the construction cost.
As a preferred scheme of the utility model, the longitudinally adjacent assembled steel truss-concrete composite beams are connected with each other, wherein transverse wet joints are arranged between the longitudinally adjacent precast concrete panels.
As a preferable scheme of the utility model, a longitudinal wet seam is arranged between the transversely adjacent assembled steel truss-concrete composite beams.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. according to the fabricated steel truss-concrete composite beam, the connecting nodes are arranged on the precast concrete panels and are connected with the web members on the lower chords, so that the traditional construction process is improved, namely, the upper chords and the lower chords are assembled into a whole, then, the concrete bridge panel is applied to the upper chords, the upper chords and the concrete bridge panel bear the pressure of a bridge roof together, the fabricated steel truss-concrete composite beam is eliminated, the precast concrete panel can be matched with the lower chords through the connecting nodes, the concrete compression performance of the precast concrete panel and the steel tension performance of the lower chords are fully utilized, the material utilization rate is high, and materials are saved.
2. The assembled steel truss-concrete combined bridge is formed by assembling the combined beams consisting of the precast concrete panels and the lower chords, and compared with the traditional construction process, the assembled steel truss-concrete combined bridge can simplify the construction process, effectively reduce the installation time of the bridge, simultaneously realize the full precast assembly of the bridge, and remarkably reduce the construction cost.
Drawings
Fig. 1 is a schematic view of a prior art steel truss-concrete composite beam.
Fig. 2 is a schematic view of an assembled steel truss-concrete composite beam structure according to the present utility model.
Fig. 3 is a side view of fig. 2.
Fig. 4 is a schematic view of an assembled steel truss-concrete composite beam prior to assembly of a precast concrete deck and a bottom chord.
Fig. 5 is a schematic view of the structure of the connection node.
Fig. 6 is a schematic illustration of the connection of precast concrete panels to connection nodes.
Fig. 7 is a schematic view of post-pouring slots on precast concrete panels.
Fig. 8 is a schematic diagram of the bridge body structure of an assembled steel truss-concrete composite bridge.
Fig. 9 is a side view of fig. 7.
The marks in the figure: 1-lower chord, 2-web members, 3-upper chord, 4-concrete bridge deck, 5-precast concrete deck, 51-post-cast notch, 6-connection node, 61-bolt plate, 62-connection steel plate, 63-shear pin group, 7-transverse wet joint, 8-longitudinal wet joint, 9-protection wall.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Example 1
As shown in fig. 2-3, an assembled steel truss-concrete composite beam comprises a lower chord member 1, web members 2, a precast concrete panel 5 and connecting nodes 6, wherein the web members 2 are connected to the lower chord member 1, the connecting nodes 6 are arranged on the bottom surface of the precast concrete panel 5, and the web members 2 are connected with the connecting nodes 6.
According to the fabricated steel truss-concrete composite beam, the connecting nodes 6 are arranged on the precast concrete panels 5 and are connected with the web members 2 on the lower chord member 1, so that a traditional construction process is improved, as shown in fig. 1, namely the upper chord member 3 and the lower chord member 1 are assembled into a whole, then the concrete bridge panels 4 are applied to the upper chord member 3, the upper chord member 3 and the concrete bridge panels 4 are utilized to bear the pressure of the bridge roof together, the fabricated steel truss-concrete composite beam can be matched with the lower chord member 1 through the connecting nodes 6, the upper chord member 3 is omitted, the concrete compression performance of the precast concrete panels 5 and the steel tension performance of the lower chord member 1 are fully utilized, materials are saved, meanwhile, due to the fact that the precast concrete panels 5 are connected with the web members 2, the beam plate construction process is simplified, the installation of the upper chord member 1 and the concrete bridge panels 4 are not required to be poured, the construction time is shortened, the practical construction period is shortened, and the fabricated in the practical steel truss-concrete composite beam is convenient to implement in large scale, and the fabricated steel truss-concrete composite beam is practical.
As shown in fig. 2, at least two web members 2 are arranged between the connection node 6 and the lower chord member 1, so that the connection node 6 and the web members 2 are firmly connected, and the connection node 6 and the lower chord member 1 are firmly connected, and the precast concrete panel 5 and the lower chord member 1 are reliably connected, wherein the at least two web members 2 form a triangular structure through the connection node 6 by surrounding the connection node 6 and the lower chord member 1, so that the precast concrete panel 5 and the lower chord member 1 are more firmly connected.
As shown in fig. 3, the precast concrete deck 5 is connected with at least two lower chords 1, and by connecting the precast concrete deck 5 with at least two lower chords 1, when the precast concrete deck 5 is stressed, the load generated by the stress of the precast concrete deck 5 can be conveniently shared by the plurality of lower chords 1.
As shown in fig. 6-7, the precast concrete deck 5 is provided with a post-pouring slot 51, the connection node 6 is arranged at the post-pouring slot 51, wherein, as shown in fig. 5, the connection node 6 comprises a bolt plate 61, a connection steel plate 62 and a shear pin group 63, wherein, the area of the connection steel plate 62 is larger than that of the post-pouring slot 51, the shear pin group 63 is welded on the top surface of the connection steel plate 62, and the bolt plate 61 is welded on the bottom surface of the connection steel plate 62; when the connecting joint 6 is installed on the precast concrete deck 5, the shear pin group 63 is placed inside the post-pouring slot 51, the connecting steel plate 62 is abutted against the bottom surface of the precast concrete deck 5, then concrete is poured into the post-pouring slot 51, the connecting joint 6 and the precast concrete deck 5 are connected into a whole, further, when the precast concrete deck 5 is manufactured, part of reinforcing steel bars are reserved in the post-pouring slot 51, and when the connecting joint 6 is installed, the reinforcing steel bars reserved in the post-pouring slot 51 are lapped or welded with the shear pin group 63 on the connecting steel plate 62, so that the connecting joint 6 is reinforced.
As shown in fig. 4 to 5, a bolt plate 61 is welded to the bottom surface of the connection steel plate 62, and the bolt plate 61 is connected to the web member 2 by bolts.
In a preferred manner, as shown in fig. 4, when the fabricated steel truss-concrete composite beam is assembled, the lower chord member 1 and the web member 2 are welded or bolted together, then the precast concrete panel 5 with the connection node 6 installed is hoisted, and the precast concrete panel 5 and the lower chord member 1 are connected by bolting the bolt plate 61 of the connection node 6 to the web member 2 on the lower chord member 1, thereby forming the fabricated steel truss-concrete composite beam.
Example 2
As shown in fig. 8-9, on the basis of embodiment 1, this embodiment also discloses an assembled steel truss-concrete composite bridge, which includes a bridge body, and the bridge body includes an assembled steel truss-concrete composite beam described in embodiment 1.
According to the assembled steel truss-concrete combined bridge, the bridge body is formed by assembling the combined beams formed by the precast concrete panels 5 and the lower chords 1, and compared with a traditional construction process, in construction operation, the assembled steel truss-concrete combined bridge can simplify construction procedures, effectively reduce the installation time of the bridge body, simultaneously realize full precast assembly of the bridge body, and remarkably reduce the construction cost.
In a preferred manner, as shown in fig. 8, the longitudinally adjacent assembled steel truss-concrete composite beams are connected with each other, wherein a transverse wet joint 7 is arranged between the longitudinally adjacent precast concrete panels 5, the longitudinally adjacent lower chords 1 are connected with each other through bolts, further, when the precast concrete panels 5 are manufactured, longitudinal connecting reinforcing steel bars are reserved at the two longitudinal ends of the precast concrete panels 5, when the longitudinally adjacent precast concrete panels 5 are connected, the longitudinal connecting reinforcing steel bars of the adjacent precast concrete panels 5 are bound together, and then the transverse wet joint 7 is formed by formwork casting concrete.
In a preferred manner, as shown in fig. 9, a longitudinal wet joint 8 is arranged between the transversely adjacent assembled steel truss-concrete composite beams, transverse connecting steel bars are reserved on the transverse sides of the precast concrete panels 5 when the precast concrete panels 5 are manufactured, and when the transversely adjacent precast concrete panels 5 are connected, the transverse connecting steel bars of the adjacent precast concrete panels 5 are bound together, and then the longitudinal wet joint 8 is formed by formwork casting concrete.
In the present specification, the longitudinal direction refers to the vehicle passing direction along the fabricated steel truss-concrete composite bridge, and the transverse direction refers to the direction perpendicular to the vehicle passing direction.
In a preferred mode, in order to facilitate installation operation during site construction, two assembled steel truss-concrete composite beams are used as a group to be installed on site to form a bridge body single-side section, then a plurality of bridge body single-side sections are longitudinally assembled into a left bridge body and a right bridge body, and after the left bridge body and the right bridge body are installed, the left bridge body and the right bridge body are connected together through a longitudinal wet joint 8 to complete main construction of the bridge body.
In a preferred manner, protective walls 9 are mounted on both sides of the bridge body, the protective walls 9 being mounted on the precast concrete deck 5.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The assembled steel truss-concrete composite beam is characterized by comprising a precast concrete panel (5) and a lower chord member (1), wherein the lower chord member (1) is connected with a web member (2), a connecting node (6) is arranged on the precast concrete panel (5), and the web member (2) is connected with the connecting node (6).
2. The fabricated steel truss-concrete composite girder according to claim 1, wherein at least two web members (2) are arranged between the connection node (6) and the lower chord member (1), wherein at least two web members (2) are triangular with the lower chord member (1) through the connection node (6).
3. A fabricated steel truss-concrete composite girder according to claim 1, characterized in that said precast concrete panels (5) connect at least two of said bottom chords (1).
4. The fabricated steel truss-concrete composite beam according to claim 1, wherein the connection node (6) comprises a bolt plate (61), a connection steel plate (62) and a shear pin group (63), the shear pin group (63) is connected to the top surface of the connection steel plate (62), the bolt plate (61) is connected to the bottom surface of the connection steel plate (62), and the bolt plate (61) is connected to the web member (2) through bolts.
5. The fabricated steel truss-concrete composite beam according to claim 4, wherein post-pouring slots (51) are provided on the precast concrete panels (5), and the connection nodes (6) are provided at the post-pouring slots (51).
6. The fabricated steel truss-concrete composite girder according to claim 5, wherein the area of the connection steel plate (62) is larger than the area of the post-pouring slot (51), and the connection steel plate (62) is abutted against the bottom surface of the precast concrete panel (5).
7. A fabricated steel truss-concrete composite beam according to claim 5, wherein said shear pin group (63) is mounted within said post-pouring spout (51).
8. A fabricated steel truss-concrete composite bridge comprising a bridge body, wherein the bridge body comprises a fabricated steel truss-concrete composite beam as defined in any one of claims 1-7.
9. A fabricated steel girder-concrete composite bridge according to claim 8, characterized in that the longitudinally adjacent fabricated steel girder-concrete composite girders are interconnected, wherein a transverse wet joint (7) is provided between the longitudinally adjacent precast concrete panels (5).
10. A fabricated steel girder-concrete composite bridge according to claim 9, characterized in that a longitudinal wet joint (8) is provided between laterally adjacent fabricated steel girder-concrete composite girders.
CN202320662610.2U 2023-03-28 2023-03-28 Assembled steel truss-concrete composite beam and composite bridge Active CN219364289U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320662610.2U CN219364289U (en) 2023-03-28 2023-03-28 Assembled steel truss-concrete composite beam and composite bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320662610.2U CN219364289U (en) 2023-03-28 2023-03-28 Assembled steel truss-concrete composite beam and composite bridge

Publications (1)

Publication Number Publication Date
CN219364289U true CN219364289U (en) 2023-07-18

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Country Status (1)

Country Link
CN (1) CN219364289U (en)

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