H-shaped steel composite beam bridge structure with transverse rigidity

Abstract

The H-shaped steel combined beam bridge structure with the transverse rigidity comprises a plurality of H-shaped steel main beams which are arranged in parallel, each H-shaped steel main beam comprises an upper flange plate, a lower flange plate and a web located between the two flange plates, and the flange plates of the H-shaped steel main beams are parallel to the plane of a bridge deck slab; a transverse connecting structure is connected between every two adjacent H-shaped steel girders, filling spaces are formed between the transverse connecting structures and the adjacent H-shaped steel girders, the filling spaces are filled with concrete, and bridge decks are arranged above the H-shaped steel girders and the transverse connecting structures. According to the H-shaped steel combined beam bridge structure with the transverse rigidity, the transverse connecting structures are arranged between the adjacent H-shaped steel main beams, and the concrete is filled in the transverse connecting structures, so that powerful transverse connection is formed, and a complete stress system is formed; therefore, the overall rigidity and stability of the H-shaped steel composite beam bridge are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, and particularly relates to an H-shaped steel composite beam bridge structure with transverse stiffness. Background Technique

[0002] In the field of bridge engineering, steel-concrete composite structure bridges have become a highly competitive bridge type for medium and small span bridges because they can give full play to the respective advantages of steel and concrete. As a steel-concrete composite bridge, the H-shaped steel composite beam bridge has the advantages of large section modulus, light self-weight, material saving, strong bearing capacity, excellent mechanical properties and easy construction. However, in the design of the H-shaped steel composite beam bridge, the structural system without web stiffeners and intermediate transverse connections in the main beam will face some technical problems.

[0003] First of all, in the case of no web stiffeners and no intermediate transverse connections in the H-shaped steel main beam, the transverse stiffness will be significantly reduced, resulting in excessive transverse deformation of the beam under the action of transverse loads. Due to insufficient transverse stiffness, the overall stability of the entire bridge structure will also be affected, which may cause large deflections and vibrations during the use of the bridge. Frequent deformation and vibration will accelerate the fatigue damage of the bridge and shorten its service life. Secondly, the lack of intermediate transverse connections will also make it difficult for shear forces to be effectively transmitted between the beams, and the overall structural stress state is not good, affecting the stability and durability of the bridge. At the same time, the weak end transverse connection will further exacerbate the above problems. Insufficient end transverse stiffness not only affects the stability of the overall structure, but also causes large deformations at the bridge ends under the action of transverse loads.

[0004] Therefore, there is an urgent need to design a beam bridge structure that can effectively improve the transverse stiffness and overall stability of the H-shaped steel composite beam bridge. Summary of the Invention

[0005] The utility model provides an H-shaped steel composite beam bridge structure with transverse stiffness to overcome the problems such as uneven force transmission and poor overall stress state caused by the lack of intermediate transverse connections and insufficient end transverse connections in the traditional H-shaped steel composite beam bridge structure.

[0006] To achieve the above purpose, the technical solution proposed by the utility model is:

[0007] An H-shaped steel composite girder bridge structure with lateral stiffness, characterized in that it includes a plurality of H-shaped steel main girders arranged in parallel. The H-shaped steel main girders include upper and lower flange plates and a web located between the two flange plates. The flange plates of the H-shaped steel main girders are parallel to the plane of the bridge deck. A transverse connection structure is connected between two adjacent H-shaped steel main girders. The transverse connection structure and the adjacent H-shaped steel main girders form a filling space, and concrete is filled in the filling space. The bridge deck is arranged above the H-shaped steel main girders and the transverse connection.

[0008] Furthermore, the transverse connection structure is a rectangular box chamber structure with an open upper end, which is formed by welding a plurality of steel plates. A plurality of nail holes are opened on the steel plates of the transverse connection structure. A plurality of connecting shear studs are welded on the H-shaped steel main girders, and the connecting shear studs are located on the contact surface between the H-shaped steel main girders and the transverse connection structure.

[0009] Furthermore, a reinforcing connecting plate is connected between two adjacent H-shaped steel main girders. A plurality of connecting shear studs are arranged on the upper end surface of the reinforcing connecting plate. The transverse connection structure is arranged on the reinforcing connecting plate, and the connecting shear studs penetrate and are located inside the transverse connection structure.

[0010] Furthermore, a steel reinforcement cage is arranged inside the transverse connection structure.

[0011] Furthermore, a plurality of bridge deck shear studs are welded on the H-shaped steel main girders, and the bridge deck shear studs are located on the contact surface between the H-shaped steel main girders and the bridge deck.

[0012] Furthermore, the bridge deck is a concrete bridge deck, including a concrete layer and a steel mesh arranged inside the concrete layer.

[0013] Furthermore, the concrete layer is a normal concrete layer, a reinforced concrete layer or a super-strong concrete layer.

[0014] Furthermore, the transverse connection structure is arranged at both ends of the girder bridge structure.

[0015] Furthermore, a plurality of groups of the transverse connection structures are arranged at intervals along the length direction of the girder bridge structure.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] The utility model provides an H-shaped steel composite beam bridge structure with transverse stiffness. By arranging a transverse connection structure between adjacent H-shaped steel main beams and filling concrete in the transverse connection structure, a strong transverse connection is formed to form a complete force-bearing system, thereby greatly improving the overall stiffness and stability of the H-shaped steel composite beam bridge; the effective transverse connection of the utility model evenly distributes the bridge deck load to each main beam, improves the stress state of the bridge, and enhances the durability of the bridge; the solid frame structure formed by concrete pouring enhances the seismic performance of the bridge, enabling it to better disperse and transmit seismic forces under earthquake action and reducing structural damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a schematic diagram of the overall structure of the composite beam bridge structure in Embodiment 1 of the utility model;

[0019] Figure 2 FIG. 10 is a schematic diagram of the connection between the H-shaped steel main beam and the bridge deck in Embodiment 1 of the utility model;

[0020] In the figure, 1 is the H-shaped steel main beam, 101 is the flange plate, and 102 is the web;

[0021] 2 is the bridge deck;

[0022] 3 is the transverse connection structure;

[0023] 4 is the connecting shear stud;

[0024] 5 is the bridge deck shear stud. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] For the convenience of understanding the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the utility model are shown in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0026] In the description of this patent, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this patent.

[0027] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0028] Example:

[0029] like Figure 1 and Figure 2 As shown, the utility model provides an H-shaped steel composite beam bridge structure with transverse rigidity, including two H-shaped steel main beams 1, the two H-shaped steel main beams 1 are arranged in parallel, the H-shaped steel main beams include upper and lower flange plates 101 and a web plate 102 located between the two flange plates, the upper flange plate 101 of the H-shaped steel main beam 1 is arranged in parallel with the plane of the bridge deck 2; a transverse connecting structure 3 is connected between two adjacent H-shaped steel main beams 1, a filling space is formed between the transverse connecting structure 3 and the two adjacent H-shaped steel main beams 1, concrete is filled in the filling space, the transverse connecting structure 3 filled with concrete and the H-shaped steel main beam 1 form a solid integrated structure, and the bridge deck 2 is arranged above the H-shaped steel main beam 1 and the transverse connecting structure 3. In the present embodiment, two groups of transverse connecting structures 3 are provided, and the two groups of transverse connecting structures 3 are respectively located at the two ends of the composite beam bridge; specifically, the transverse connecting structure 3 in the present embodiment is a rectangular box structure with an open upper end, and the upper end opening is used for grouting. The transverse connecting structure 3 is welded by a plurality of steel plates, and a plurality of nail holes are opened on the steel plates of the transverse connecting structure 3 for passing the connecting shear nails 4. Correspondingly, a plurality of connecting shear nails 4 are welded on the H-shaped steel main beam, and the connecting shear nails 4 are located on the contact surface between the H-shaped steel main beam 1 and the transverse connecting structure 3, and can be extended into the nail holes into the interior of the rectangular box structure and participate in the solidification of concrete; a steel cage is arranged in the transverse connecting structure 3 to enhance the overall stiffness and stability of the transverse connecting structure 3 after the concrete solidifies.

[0030] In order to ensure the firmness of the connection between the bridge deck 2 and the H-shaped steel main beam 1, a number of bridge deck shear nails 5 are welded on the flange plate 101 on the upper part of the H-shaped steel main beam 1. The bridge deck shear nails 5 are located on the contact surface between the H-shaped steel main beam 1 and the bridge deck 2. The bridge deck is a concrete bridge deck, including a concrete layer and a steel mesh arranged in the concrete layer. The bridge deck shear nails 5 are penetrated in the steel mesh and consolidated with the concrete layer. The concrete layer can be selected as an ordinary concrete layer, a reinforced concrete layer or a super-strong concrete layer according to needs to adapt to different usage environments and provide excellent performance and a longer service life.

[0031] The specific implementation steps of this embodiment are as follows:

[0032] Step 1. Installation of the H-shaped steel main beam:

[0033] Transport the prefabricated H-shaped steel main beam to the construction site, and install two H-shaped steel main beams in parallel according to the design position, so that the upper flange is parallel to the bridge deck.

[0034] Step 2. Installation of the transverse connection structure:

[0035] A number of connecting shear studs are provided on the H-shaped steel main beam, and then steel plates are welded to both ends of the H-shaped steel main beam to form a transverse connection structure. The connecting shear studs enter the rectangular box chamber of the transverse connection structure, and then a steel reinforcement cage is arranged in the transverse connection structure.

[0036] Step 3. Erection of the support and formwork:

[0037] Erect the support and the bridge deck formwork above the H-shaped steel main beam and the transverse connection structure to provide support for the on-site pouring of the concrete inside the bridge deck and the transverse connection structure. A steel mesh is arranged in the bridge deck formwork, and the steel mesh intersects with the bridge deck shear studs provided on the H-shaped steel main beam.

[0038] Step 4. Pouring of the concrete:

[0039] Inject grout into the bridge deck formwork. Since the upper end of the transverse connection structure is an open structure, the transverse connection structure can complete the grouting of the concrete at the same time. After the grouting is completed, the transverse connection structure, the bridge deck and the H-shaped steel main beam form a consolidated steel-concrete integrated structure.

[0040] Step 5. Curing of the concrete:

[0041] Cure after pouring. After the concrete reaches the design strength, remove the support and the formwork, and complete the bridge decoration and paving operations.

[0042] The H-shaped steel composite beam bridge structure with transverse stiffness provided by the present utility model, through the above specific implementation manners, not only significantly improves the transverse stiffness and overall stability of the bridge, but also improves the stress state of the bridge, enhances the durability and seismic performance, simplifies the construction process, reduces the construction cost, and has high practical value and promotion prospects.

[0043] Embodiment 2:

[0044] In order to further enhance the stiffness and stability of the transverse connection structure, different from Embodiment 1, a reinforcing connecting plate is connected between two adjacent H-shaped steel main beams. A number of connecting shear studs are provided on the upper end face of the reinforcing connecting plate. The transverse connection structure is arranged on the reinforcing connecting plate. The connecting shear studs are inserted into the transverse connection structure, and then integrally formed by concrete pouring, so as to ensure the firm connection of the transverse connection structure.

[0045] Embodiment 3:

[0046] Different from Embodiment 1 or Embodiment 2, in this embodiment, several groups of transverse connection structures are arranged at equal intervals along the length direction of the beam bridge structure, so as to enhance the stability, bearing capacity and strength of the whole bridge.

[0047] For those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An H-shaped steel composite beam bridge structure with lateral rigidity, characterized in that: It comprises a plurality of H-shaped steel main beams, which are arranged in parallel. The H-shaped steel main beams comprise two upper and lower flange plates and a web plate located between the two flange plates. The flange plates of the H-shaped steel main beams are parallel to the plane of the bridge deck. A transverse connecting structure is connected between two adjacent H-shaped steel main beams. A filling space is formed between the transverse connecting structure and the adjacent H-shaped steel main beams. Concrete is filled in the filling space. The bridge deck is arranged above the H-shaped steel main beam and the transverse connection.

2. The H-shaped steel composite beam bridge structure with transverse rigidity according to claim 1, characterized in that: The transverse connecting structure is a rectangular box structure with an open upper end, which is composed of a number of welded steel plates, and a number of nail holes are opened on the steel plates of the transverse connecting structure; a number of connecting shear nails are welded on the H-shaped steel main beam, and the connecting shear nails are located on the contact surface between the H-shaped steel main beam and the transverse connecting structure.

3. The H-shaped steel composite beam bridge structure with transverse rigidity according to claim 1, characterized in that: A reinforcing connecting plate is connected between two adjacent H-shaped steel main beams, and a plurality of connecting shear nails are arranged on the upper end surface of the reinforcing connecting plate. The transverse connecting structure is arranged on the reinforcing connecting plate, and the connecting shear nails are penetrated and located in the transverse connecting structure.

4. The H-shaped steel composite beam bridge structure with transverse rigidity according to claim 2 or 3, characterized in that: A steel cage is arranged in the transverse connection structure.

5. The H-shaped steel composite beam bridge structure with transverse rigidity according to claim 1, characterized in that: A plurality of bridge deck shear nails are welded on the H-shaped steel main beam, and the bridge deck shear nails are located on the contact surface between the H-shaped steel main beam and the bridge deck.

6. The H-shaped steel composite beam bridge structure with transverse rigidity according to claim 5, characterized in that: The bridge deck is a concrete bridge deck, comprising a concrete layer and a steel mesh arranged in the concrete layer.

7. The H-shaped steel composite beam bridge structure with transverse rigidity according to claim 6, characterized in that: The concrete layer is a common concrete layer, a reinforced concrete layer or a super-strong concrete layer.

8. The H-shaped steel composite beam bridge structure with transverse rigidity according to claim 1, characterized in that: The transverse connection structure is arranged at both ends of the beam bridge structure.

9. The H-shaped steel composite beam bridge structure with transverse rigidity according to claim 1, characterized in that: The transverse connection structures are arranged in a plurality of groups at intervals along the length direction of the beam bridge structure.

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