Steel structure bridge plate type support tensile structure

Abstract

The utility model relates to a steel structure bridge plate type support tensile structure which comprises four anchor bolts pre-buried at the top of a cover beam, a lower padstone arranged at the top of the cover beam, an upper cushion block fixed on an inner bottom plate of a steel box beam, an upper seat plate arranged in the steel box beam and located above the upper cushion block, and a lower support arranged between the top of the lower padstone and the bottom plate of the steel box beam. An upper support is arranged between the top of the upper cushion block and the upper seat plate, and the part, exposed out of the top of the cover beam, of the anchor bolt sequentially penetrates through the lower padstone, the steel box beam bottom plate, the upper cushion block and the upper seat plate and is fixed through nuts. According to the utility model, the double-layer plate-type support is adopted to realize tension-compression limiting of the upper structure of the bridge, the structure is simple and easy to implement and convenient to mount and dismount, the anti-seismic property of the bridge structure can be effectively improved, the plate-type support does not need to be perforated, and the bearing capacity of the plate-type support cannot be weakened; the tensile structure is arranged in the steel box girder in a hidden mode, the whole bridge is more attractive, and the structure is not exposed to the sun and rain and is easy to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to a plate-type bearing tensile structure of a steel structure bridge. Background Art

[0002] In bridge structure engineering, plate bearings are a common type of bearing used in small and medium span bridges. Plate bearings are simple in structure, low in cost, and easy to construct, but most common plate bearings are compression bearings. When they need to withstand tension, tension bolts are generally set in the center of the bearing to connect the beam and the bearing bottom plate together. Opening a hole in the center of the bearing will weaken the bearing capacity of the bearing, and the tensile function is achieved by hard connection with the beam body through bolts, which is easy to damage the beam body and connecting components, thereby making the tensile function ineffective. Utility Model Content

[0003] The utility model aims to solve the deficiencies of the prior art and provides a steel structure bridge plate support tensile structure.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A steel structure bridge plate support tensile structure, including four anchor bolts embedded in the top of the cap beam, a lower pad stone arranged on the top of the cap beam, an upper pad block fixed on the inner bottom plate of the steel box beam, and an upper seat plate arranged inside the steel box beam and above the upper pad block. A lower support is arranged between the top of the lower pad stone and the bottom plate of the steel box beam, and an upper support is arranged between the top of the upper pad block and the upper seat plate. The portion of the anchor bolt exposed from the top of the cap beam passes through the lower pad stone, the bottom plate of the steel box beam, the upper pad block, and the upper seat plate in sequence and is fixed with nuts.

[0006] The lower cushion stone, the upper cushion block and the upper seat plate are all penetrated with through holes for the corresponding anchor bolts, and the anchor bolts are inserted into the through holes.

[0007] The upper pad is welded to the inner bottom plate of the steel box girder.

[0008] The beneficial effects of the utility model are as follows: the utility model adopts a double-layer plate support to realize the tension and compression limitation of the bridge superstructure. The structure is simple and easy, and it is convenient to install and disassemble. It can effectively improve the seismic performance of the bridge structure. The structure does not need to open holes on the plate support, and will not weaken the bearing capacity of the plate support. The tensile structure is concealed inside the steel box girder, the overall bridge is more beautiful, and the structure is not exposed to the sun and rain, and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a cross-sectional view of the utility model;

[0010] Figure 2 It is an elevation view of the utility model;

[0011] In the figure: 1-anchor bolt; 2-lower cushion stone, 3-lower support; 4-upper cushion block; 5-upper support; 6-upper seat plate; 7-nut; 8-steel box girder; 9-cap beam.

[0012] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0013] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0014] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] like Figure 1 to Figure 2 As shown, a steel structure bridge plate support tensile structure includes an anchor bolt 1, a lower cushion stone 2, a lower support 3, an upper cushion block 4, an upper support 5, an upper seat plate 6, and a nut 7.

[0018] Four anchor bolts 1 are embedded in the top of the cap beam 9. A lower pad stone 2 is arranged on the top of the cap beam 9. An upper pad block 4 is fixed on the inner bottom plate of the steel box beam 8. An upper seat plate 6 is arranged above the upper pad block 4 inside the steel box beam 8. A lower support 3 is arranged between the top of the lower pad stone 2 and the bottom plate of the steel box beam 8. An upper support 5 is arranged between the top of the upper pad block 4 and the upper seat plate 6. The part of the anchor bolt 1 exposed from the top of the cap beam 9 passes through the lower pad stone 2, the bottom plate of the steel box beam 8, the upper pad block 4 and the upper seat plate 6 in sequence and is fixed with a nut 7.

[0019] The lower cushion stone 2, the upper cushion block 4 and the upper seat plate 6 are all penetrated with through holes corresponding to the anchor bolts 1, and the anchor bolts 1 are inserted into the through holes.

[0020] The upper pad 4 is welded to the inner bottom plate of the steel box girder 8 .

[0021] The anchor bolt 1 is an L-shaped structure, and the lower end of the anchor bolt 1 is pre-buried in the top of the cap beam 9.

[0022] An external thread matching the nut 7 is provided on the outer wall of the upper end of the anchor bolt 1 .

[0023] The anchor bolts 1 are vertically anchored in the cap beam 9 along the four corners of the steel structure bridge slab support. When the cap beam 9 is cast, the anchor bolts 1 are pre-buried in the concrete of the cap beam 9 in advance. The part of the anchor bolts 1 extending out of the cap beam 9 passes through the lower cushion stone 2, the bottom plate of the steel box beam 8, the upper cushion block 4 and the upper seat plate 6 in sequence. The lower cushion stone 2 is cast after the strength of the cap beam 9 reaches the design requirements. The flatness of the top surface of the lower cushion stone 2 must meet the setting requirements of the steel structure bridge slab support. After the strength of the lower cushion stone 2 reaches the design strength, the lower support 3 is installed at the center of the top surface of the lower cushion stone 2.

[0024] The upper pad 4 is arranged above the bottom plate inside the steel box girder 8. The upper pad 4 is welded in advance when the steel box girder 8 is prefabricated in the factory, and holes are left at the bottom plate of the steel box girder 8 and the corresponding positions of the upper pad 4 and the anchor bolt 1 to allow the anchor bolt 1 to pass through. After the steel box girder 8 is transported to the site, it is hoisted onto the lower support 3, so that the anchor bolt 1 passes through the bottom plate of the steel box girder 8 and the upper pad 4.

[0025] After the steel box girder 8 is hoisted, the upper support 3 and the upper seat plate 6 are installed inside the steel box girder 8 through the inspection hole of the steel box girder 8. The upper support 3 is set at the top center of the upper pad 4, and the four corners of the upper seat plate 6 corresponding to the anchor bolt 1 are pre-set with holes for the anchor bolt 1 to pass through. The top of the anchor bolt 1 is provided with a thread matching the nut 7. After the upper seat plate 6 passes through the anchor bolt 1, the nut 7 is set on the anchor bolt 1 and tightened.

[0026] When the bridge is in normal use, the downward pressure load of the support structure is transmitted to the lower structure through the lower support 3. When the bridge vibrates and the support generates an upward tensile force, the load is transmitted to the anchor 1 through the upper support 5 and finally to the lower structure, thereby realizing the tensile resistance function.

[0027] The utility model adopts a double-layer plate support to realize the tension and compression limitation of the bridge superstructure. The structure is simple and easy, and it is convenient to install and disassemble. It can effectively improve the seismic performance of the bridge structure. The structure does not need to open holes on the plate support, and will not weaken the bearing capacity of the plate support. The tensile structure is concealed inside the steel box girder 8, and the overall bridge is more beautiful. The structure is not exposed to the sun and rain and is easy to maintain.

[0028] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A steel structure bridge plate bearing tensile structure, characterized in that: The invention comprises four anchor bolts (1) embedded in the top of the cap beam (9), a lower cushion stone (2) arranged on the top of the cap beam (9), an upper cushion block (4) fixed on the inner bottom plate of the steel box beam (8), and an upper seat plate (6) arranged inside the steel box beam (8) and located above the upper cushion block (4). A lower support (3) is arranged between the top of the lower cushion stone (2) and the bottom plate of the steel box beam (8), and an upper support (5) is arranged between the top of the upper cushion block (4) and the upper seat plate (6). The portion of the anchor bolt (1) exposed from the top of the cap beam (9) passes through the lower cushion stone (2), the bottom plate of the steel box beam (8), the upper cushion block (4), and the upper seat plate (6) in sequence and is fixed by a nut (7).

2. A steel structure bridge plate bearing tensile structure according to claim 1, characterized in that: The lower cushion stone (2), the upper cushion block (4) and the upper seat plate (6) are all penetrated by through holes corresponding to the anchor bolts (1), and the anchor bolts (1) are inserted into the through holes.

3. A steel structure bridge plate bearing tensile structure according to claim 2, characterized in that: The upper pad (4) is welded to the inner bottom plate of the steel box beam (8).

4. A steel structure bridge plate bearing tensile structure according to claim 3, characterized in that: The anchor bolt (1) is an L-shaped structure, and the lower end of the anchor bolt (1) is pre-buried in the top of the cap beam (9).

5. The steel structure bridge plate bearing tensile structure according to claim 4, characterized in that: An outer thread matching the nut (7) is provided on the outer wall of the upper end of the anchor bolt (1).

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