I-shaped steel reinforced hollow slab bridge structure

Abstract

The utility model discloses an I-shaped steel reinforced hollow slab bridge structure, which comprises a plurality of hollow slab bridges and a plurality of steel girders, the plurality of hollow slab bridges are arranged along a first direction, a hinge joint is formed between every two adjacent hollow slab bridges, each steel girder is of an I-shaped structure, the plurality of steel girders are respectively arranged in the plurality of hinge joints, and the plurality of steel girders are respectively arranged in the plurality of hinge joints. The bottoms of every two adjacent steel girders are connected through a connecting assembly, and polymer repairing mortar is filled between the steel girders and the hinge joints. The bearing capacity of the hollow slab bridge is effectively improved, transverse connection of the hollow slab bridge is enhanced, and the hollow slab bridge has the advantages of being convenient to construct, good in durability and remarkable in economic benefit.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge reinforcement, and in particular to an I-shaped steel reinforcement structure for hollow slab bridges. Background Technology

[0002] In recent years, prefabricated bridges, characterized by "standardized design, factory production, and assembly construction," have been increasingly used in bridge construction. Hollow slab girder bridges are a typical structural form commonly used in small-to-medium span prefabricated bridges, and their application is very widespread.

[0003] As time goes by, existing hollow slab bridges are prone to problems such as concrete cracking and steel corrosion in the hinge joint area, leading to reduced lateral load transfer efficiency. Traditional hinge replacement methods require the removal of the original concrete, have a long construction period, and are prone to damaging the precast slabs. External transverse prestressing methods are prone to stress concentration at the anchorage end and are prone to relaxation after long-term service. Bottom steel plate bonding methods cannot improve the internal damage of the hinge joint, and the reinforcement effect has limitations. Utility Model Content

[0004] In view of the above-mentioned problems of existing hollow slab bridges, this paper aims to provide a "I"-shaped steel reinforcement structure for hollow slab bridges.

[0005] The specific technical solution is as follows:

[0006] A hollow slab bridge structure reinforced with I-beams includes:

[0007] A plurality of hollow slab bridges are arranged along a first direction, and a hinge joint is formed between two adjacent hollow slab bridges.

[0008] Several steel main beams, each of which has an "I" shaped structure, are respectively located in several hinge joints. The bottoms of two adjacent steel main beams are connected by a connecting component, and the space between the steel main beams and the hinge joints is filled with polymer repair mortar.

[0009] As a further improvement and optimization of this scheme, each of the steel main beams includes a web, an upper flange, and a lower flange. The web is located within the hinge joint, the upper flange is connected to the top of the web and is positioned relative to the top of the hollow slab bridge, and the lower flange is located at the bottom of the web and is positioned relative to the bottom of the hollow slab bridge.

[0010] As a further improvement and optimization of this solution, the connecting assembly includes several connecting steel plates, which are connected to the two lower flanges of two adjacent steel main beams.

[0011] As a further improvement and optimization of the present solution, the lower flange is arranged along a second direction, the connecting steel plate is arranged along the first direction, and the first direction is perpendicular to the second direction.

[0012] As a further improvement and optimization of the present solution, the lower flange is arranged along a second direction, the connecting steel plate is arranged along the first direction, and the first direction is perpendicular to the second direction.

[0013] As a further improvement and optimization of the present solution, the upper flange is bolted to the web.

[0014] As a further improvement and optimization of the present solution, the connecting steel plate is welded to the lower flange.

[0015] As a further improvement and optimization of the present solution, the polymer repair mortar is a cement mortar for repairing concrete structures.

[0016] The above technical solution has the following positive effects compared with the prior art:

[0017] The collaborative connection of the I-shaped steel girder and the hinge joint of the hollow slab bridge in the utility model constructs an efficient overall stress system, the connecting steel plate of the connecting assembly forms a stable mechanical transmission path with the beam bottom and the lower flange of the I-shaped steel through a precise welding process, the lateral integrity of the bridge structure is significantly enhanced, meanwhile, the hinge joint and the gap are precisely filled with high-performance polymer repair mortar, which not only effectively improves the durability of the structure, but also greatly optimizes the load distribution characteristics. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a structural schematic view of the I-shaped steel reinforced hollow slab bridge structure of the utility model;

[0019] Fig. 2 is a structural schematic view of the steel girder of the I-shaped steel reinforced hollow slab bridge structure of the utility model;

[0020] Fig. 3 is a top view of the connecting assembly of the I-shaped steel reinforced hollow slab bridge structure of the utility model;

[0021] In the drawings: 1, hollow bridge slab; 2, steel girder; 3, connecting assembly; 11, hinge joint; 21, web; 22, upper flange; 23, lower flange; 31, connecting steel plate. DETAILED DESCRIPTION

[0022] The technical solutions of the utility model will be described clearly and completely below with reference to the drawings, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] In the description of the utility model, it needs to explain that, if the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear, the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, if the terms "first", "second" and "third" appear, they are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, it needs to explain that, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting" and "connection" appear, they should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected, can be mechanically connected, or can be electrically connected, can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] Fig. 1 The structure of the "H" shaped steel reinforced hollow slab bridge structure of the utility model is shown in the figure, Fig. 2 The structure of the steel main beam of the "H" shaped steel reinforced hollow slab bridge structure of the utility model is shown in the figure, Fig. 3 The top view of the connecting assembly of the "H" shaped steel reinforced hollow slab bridge structure of the utility model is shown in the figure, Figs. 1-3 As shown in the figure, a "H" shaped steel reinforced hollow slab bridge 1 structure of a preferred embodiment is shown, comprising a plurality of hollow slab bridges 1 and a plurality of steel main beams 2, the plurality of hollow slab bridges 1 are arranged along a first direction, and a hinge joint 11 is formed between the adjacent two hollow slab bridges 1, each steel main beam 2 is in a "H" shaped structure, the plurality of steel main beams 2 are respectively arranged in the plurality of hinge joints 11, the bottoms of the adjacent two steel main beams 2 are connected through a connecting assembly 3, and the steel main beam 2 and the hinge joint 11 are filled with polymer repair mortar.

[0026] Further, as a preferred embodiment, each steel main beam 2 comprises a web plate 21, an upper flange plate 22 and a lower flange plate 23, the web plate 21 is arranged in the hinge joint 11, the upper flange plate 22 is connected to the top of the web plate 21 and is limited with the top of the hollow slab bridge 1, and the lower flange plate 23 is arranged at the bottom of the web plate 21 and is limited with the bottom of the hollow slab bridge 1.

[0027] Further, as a preferred embodiment, the connecting assembly 3 comprises a plurality of connecting steel plates 31, and the plurality of connecting steel plates 31 are connected between the two lower flange plates 23 of the adjacent two steel main beams 2.

[0028] The cooperation connection of the I-shaped steel main beam 2 and the hinge joint 11 of the hollow slab bridge 1 in the embodiment constructs an efficient overall stress system, the connecting steel plate 31 of the connecting assembly 3 forms a stable mechanical transmission path with the beam bottom and the lower wing plate 23 of the I-shaped steel through a precise welding process, which significantly enhances the lateral integrity of the bridge structure, and the hinge joint 11 and the gap are precisely filled by using high-performance polymer repair mortar, which not only effectively improves the durability of the structure, but also greatly optimizes the load distribution characteristics.

[0029] Further, as a preferred embodiment, the lower wing plate 23 is arranged along the second direction, the connecting steel plate 31 is arranged along the first direction, and the first direction is perpendicular to the second direction.

[0030] Further, as a preferred embodiment, the lower wing plate 23 is welded with the web plate 21.

[0031] Further, as a preferred embodiment, the upper wing plate 22 is bolted with the web plate 21.

[0032] Further, as a preferred embodiment, the connecting steel plate 31 is welded with the lower wing plate 23.

[0033] Further, as a preferred embodiment, the polymer repair mortar is a cement mortar for repairing concrete structures.

[0034] The utility model has the following implementation modes on the basis of the above:

[0035] Further, as a preferred embodiment, the length of the I-shaped steel main beam 2 along the bridge direction is 4-6m.

[0036] Further, as a preferred embodiment, the thickness of the web plate 21 is 6-8mm.

[0037] Further, as a preferred embodiment, the thickness of the lower wing plate 23 is 8-12mm, and the width is 200mm.

[0038] Further, as a preferred embodiment, the width of the upper wing plate 22 is 125mm, the unequal angle steel ∠125x80x10 is used, the length along the bridge direction is 200mm, the spacing along the bridge direction is 0.6-1.2m, and the upper wing plate 22 is bolted with the web plate 21 of the steel main beam 2.

[0039] Further, as a preferred embodiment, the thickness of the connecting steel plate 31 is 8-12mm, the length along the bridge direction is 200mm, and the spacing along the bridge direction is 0.6-1.2m.

[0040] The above merely describes preferred embodiments of the present application, and is not intended to limit the implementation and protection scope of the present application. For those skilled in the art, it should be understood that any equivalent substitutions and obvious changes made according to the content of the present application description and drawings should be included in the protection scope of the present application.

Claims

1. A hollow slab bridge structure reinforced with I-beams, characterized in that, include: A plurality of hollow slab bridges are arranged along a first direction, and a hinge joint is formed between two adjacent hollow slab bridges. Several steel main beams, each of which has an "I" shaped structure, are respectively located in several hinge joints. The bottoms of two adjacent steel main beams are connected by a connecting component, and the space between the steel main beams and the hinge joints is filled with polymer repair mortar.

2. The hollow slab bridge structure reinforced with I-beams according to claim 1, characterized in that, Each of the steel main beams includes a web, an upper flange, and a lower flange. The web is located within the hinge joint. The upper flange is connected to the top of the web and is positioned relative to the top of the hollow slab bridge. The lower flange is located at the bottom of the web and is positioned relative to the bottom of the hollow slab bridge.

3. The hollow slab bridge structure reinforced with I-beams according to claim 2, characterized in that, The connecting assembly includes a plurality of connecting steel plates, which are connected between the two lower flanges of two adjacent steel main beams.

4. The hollow slab bridge structure reinforced with I-beams according to claim 3, characterized in that, The lower wing plate is arranged along the second direction, and the connecting steel plate is arranged along the first direction, with the first direction being perpendicular to the second direction.

5. The hollow slab bridge structure reinforced with I-beams according to claim 2, characterized in that, The lower flange is welded to the web.

6. The hollow slab bridge structure reinforced with I-beams according to claim 2, characterized in that, The upper flange is bolted to the web plate.

7. The hollow slab bridge structure reinforced with I-beams according to claim 3, characterized in that, The connecting steel plate is welded to the lower wing plate.

8. The hollow slab bridge structure reinforced with I-beams according to claim 1, characterized in that, The polymer repair mortar is a cement mortar used for repairing concrete structures.

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