Transition connection structure of bailey beam trestle and steel box beam trestle

Abstract

The utility model belongs to the technical field of trestles, and particularly relates to a transition connection structure of a bailey beam trestle and a steel box beam trestle. Comprising a reinforced concrete top cap which is arranged at the top of a steel pipe pile foundation; the top face of the reinforced concrete top cap is half divided into a bailey beam trestle area and a steel box beam trestle area, the steel box beam trestle area is provided with a steel box beam trestle supporting structure and a concrete anti-beam-falling check block, and the steel box beam trestle supporting structure supports a steel box beam trestle at the bottom. The concrete anti-beam-falling stop blocks limit deviation of the steel box beam trestle on the two side faces of the steel box beam trestle, supporting columns are arranged in the Bailey beam trestle area, the bottoms of the supporting columns support the Bailey beam trestle, and the Bailey beam trestle is lifted to the bridge deck to be aligned with the steel box beam trestle through the supporting columns. The reinforced concrete top cap serves as a supporting platform of the transition end of the steel box beam trestle and the bailey beam trestle, the reinforced concrete top cap is of a prefabricated structure and is connected with the steel pipe pile foundation through bolts, and the installation process is simplified.

Description

Technical Field

[0001] The utility model belongs to the technical field of trestles, and particularly relates to a transition connection structure between a Bailey beam trestle and a steel box girder trestle. Background Technique

[0002] Trestles spanning water areas usually adopt Bailey beam trestles. However, the span of Bailey beam trestles is limited and generally not applicable to waterway areas. The steel box girder trestle has a large span adjustment range and can be applicable to waterway areas. However, due to the different structural heights of the Bailey beam trestle and the steel box girder trestle, a transition connection structure is required to connect the elevations on both sides smoothly. Content of the Utility Model

[0003] The utility model solves the problem that the elevations of the structural objects on both sides at the transition between the Bailey beam trestle and the steel box girder trestle are different.

[0004] The utility model provides the following technical solution: a transition connection structure between a Bailey beam trestle and a steel box girder trestle, including a reinforced concrete top cap arranged on the top of a steel pipe pile foundation; the top surface of the reinforced concrete top cap is divided into two halves, namely a Bailey beam trestle area and a steel box girder trestle area. The steel box girder trestle area is provided with a steel box girder trestle support structure and a concrete anti-falling beam block. The steel box girder trestle support structure supports the steel box girder trestle at the bottom, and the concrete anti-falling beam block restricts the offset of the steel box girder trestle on both side surfaces of the steel box girder trestle. The Bailey beam trestle area is provided with support columns, and the support columns support the Bailey beam trestle at the bottom, and the Bailey beam trestle is lifted to align the bridge deck with the steel box girder trestle through the support columns.

[0005] Further, a bottom steel plate is arranged on the bottom surface of the reinforced concrete top cap, and the bottom steel plate is welded and connected with shear studs embedded in the reinforced concrete top cap;

[0006] A first flange is arranged on the top of the steel pipe pile foundation, and embedded bolts corresponding to the through holes on the first flange one by one are embedded at the bottom of the reinforced concrete top cap. The embedded bolts pass through the through holes on the first flange and are bolted to the first flange.

[0007] Further, the steel box girder trestle support structure includes a bearing padstone and a steel box girder bearing, and the steel box girder bearing is arranged on the top of the bearing padstone.

[0008] Further, the support column is welded and connected with the embedded steel bars on the top of the reinforced concrete top cap.

[0009] Further, a second flange is arranged at the bottom of the support column, and the embedded steel bars correspond to the through holes on the second flange one by one. The embedded steel bars extend into the through holes of the second flange. The through holes are tapered holes that are larger at the top and smaller at the bottom, and the embedded steel bars are plug-welded and fixed in the through holes.

[0010] Furthermore, the axis of the support column is aligned with the axis of the steel pipe pile foundation under the reinforced concrete top cap.

[0011] Furthermore, a stiffening plate is welded between the support column and the second flange plate.

[0012] Furthermore, the edge of the bottom steel plate is aligned with the bottom edge of the reinforced concrete top cap, and the shear studs are distributed in a rectangular array on the bottom steel plate.

[0013] Furthermore, the stiffening plate is located between the two embedded steel bars.

[0014] Furthermore, the top of the support column is connected to the member of the Bailey beam trestle through U-bolts.

[0015] Compared with the prior art, the advantages of the present utility model are as follows:

[0016] A transition connection structure between a Bailey beam trestle and a steel box girder trestle provided by the present utility model, the reinforced concrete top cap serves as a support platform at the transition end of the steel box girder trestle and the Bailey beam trestle. The reinforced concrete top cap is a precast structure and is bolted to the steel pipe pile foundation, simplifying the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the transition connection structure between the Bailey beam trestle and the steel box girder trestle;

[0018] Figure 2 is a schematic diagram of the support structure of the steel box girder trestle;

[0019] Figure 3 is a schematic diagram of the connection between the support column and the reinforced concrete top cap;

[0020] Figure 4 is a schematic diagram of the positions of the support column, the steel box girder bearing, and the concrete anti-falling beam block;

[0021] Figure 5 is a schematic diagram of the connection between the support column and the Bailey beam trestle.

[0022] In the figure: 1 - reinforced concrete top cap; 2 - shear stud; 3 - embedded bolt; 4 - bottom steel plate; 5 - first flange plate; 6 - bearing pad stone; 7 - steel box girder bearing; 8 - concrete anti-falling beam block; 9 - embedded steel bar; 10 - second flange plate; 11 - stiffening plate; 12 - steel pipe pile foundation; 13 - support column; 14 - steel box girder trestle; 15 - Bailey beam trestle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] As Figure 1 , Figure 2 shown: A transition connection structure between a Bailey beam trestle and a steel box girder trestle includes a reinforced concrete top cap 1, and the reinforced concrete top cap 1 is arranged on the top of a steel pipe pile foundation 12; the top surface of the reinforced concrete top cap 1 is divided into two halves, namely the Bailey beam trestle area and the steel box girder trestle area. The steel box girder trestle area is provided with a steel box girder trestle support structure and a concrete anti-falling beam block 8. The steel box girder trestle support structure supports the steel box girder trestle 14 at the bottom, and the concrete anti-falling beam block 8 restricts the offset of the steel box girder trestle 14 on both side surfaces of the steel box girder trestle 14. The Bailey beam trestle area is provided with a support column 13, and the support column 13 supports the Bailey beam trestle 15 at the bottom, and the Bailey beam trestle 15 is lifted to align with the steel box girder trestle 14 at the bridge deck through the support column 13.

[0025] The reinforced concrete top cap 1 adopts a precast structure, and a bottom steel plate 4 is arranged on the bottom surface of the reinforced concrete top cap 1. The bottom steel plate 4 is welded and connected with shear studs 2 embedded in the reinforced concrete top cap 1; before pouring the reinforced concrete top cap 1, the shear studs 2 are first welded on the bottom steel plate 4, and the bottom steel plate 4 welded with the shear studs 2 is used as the bottom formwork of the reinforced concrete top cap 1.

[0026] A first flange 5 is arranged on the top of the steel pipe pile foundation 12, and embedded bolts 3 corresponding to the through holes on the first flange 5 one by one are embedded at the bottom of the reinforced concrete top cap 1. The embedded bolts 3 pass through the through holes on the first flange 5 and are bolted to the first flange 5.

[0027] The edge of the bottom steel plate 4 is aligned with the bottom surface edge of the reinforced concrete top cap 1, and the shear studs 2 are distributed in a rectangular array on the bottom steel plate 4.

[0028] As Figure 2 shown: The steel box girder trestle support structure includes a bearing padstone 6 and a steel box girder bearing 7, and the steel box girder bearing 7 is arranged on the top of the bearing padstone 6; the bearing padstone 6 is cast integrally with the reinforced concrete top cap 1.

[0029] The support column 13 is welded and connected with the embedded steel bars 9 at the top of the reinforced concrete top cap 1; as Figure 3As shown in the figure: A second flange 10 is provided at the bottom of the support column 13. The embedded steel bars 9 correspond one by one to the through holes on the second flange 10. The embedded steel bars 9 extend into the through holes of the second flange 10. The through holes are tapered holes that are larger at the top and smaller at the bottom. The embedded steel bars 9 are fixed by plug welding in the through holes.

[0030] As Figure 5 shown in the figure: The top of the support column 13 is connected to the member of the Bailey beam trestle 15 through U-shaped bolts 16.

[0031] In order to increase the connection strength between the support column 13 and the second flange 10, a stiffening plate 11 is welded between the support column 13 and the second flange 10. The stiffening plate 11 is located between the two embedded steel bars 9.

[0032] As Figure 4 shown in the figure: The axis of the support column 13 is aligned with the axis of the steel pipe pile foundation 12 under the reinforced concrete top cap 1. The loads are on the same vertical line to prevent the reinforced concrete top cap 1 from tipping over.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transition connection structure between a Bailey beam trestle and a steel box girder trestle, characterized in that: It includes a reinforced concrete top cap (1), and the reinforced concrete top cap (1) is arranged on the top of a steel pipe pile foundation (12); the top surface of the reinforced concrete top cap (1) is divided into two halves as the Bailey beam trestle area and the steel box girder trestle area. The steel box girder trestle area is provided with a steel box girder trestle support structure and a concrete anti-falling beam block (8). The steel box girder trestle support structure supports the steel box girder trestle (14) at the bottom, and the concrete anti-falling beam block (8) restricts the offset of the steel box girder trestle (14) on both side surfaces of the steel box girder trestle (14). The Bailey beam trestle area is provided with support columns (13), and the support columns (13) support the Bailey beam trestle (15) at the bottom, and the Bailey beam trestle (15) is lifted by the support columns (13) to align with the steel box girder trestle (14) at the bridge deck.

2. The transitional connection structure between a Bailey beam trestle and a steel box girder trestle according to claim 1, characterized in that: A bottom steel plate (4) is arranged on the bottom surface of the described reinforced concrete top cap (1), and the bottom steel plate (4) is welded and connected with shear studs (2) embedded in the reinforced concrete top cap (1); A first flange plate (5) is arranged on the top of the steel pipe pile foundation (12), and embedded bolts (3) corresponding one by one to the through holes on the first flange plate (5) are embedded at the bottom of the reinforced concrete top cap (1). The embedded bolts (3) pass through the through holes on the first flange plate (5) and are bolted to the first flange plate (5).

3. The transition connection structure between a Bailey beam trestle and a steel box girder trestle according to claim 2, characterized in that: The described steel box girder trestle support structure includes a bearing pad stone (6) and a steel box girder bearing (7), and the steel box girder bearing (7) is arranged on the top of the bearing pad stone (6).

4. The transition connection structure between a Bailey beam trestle and a steel box girder trestle according to claim 2 or 3, characterized in that: The described support column (13) is welded and connected with the embedded steel bars (9) on the top of the reinforced concrete top cap (1).

5. The transition connection structure between a Bailey beam trestle and a steel box girder trestle according to claim 4, characterized in that: A second flange plate (10) is arranged at the bottom of the described support column (13), and the embedded steel bars (9) correspond one by one to the through holes on the second flange plate (10). The embedded steel bars (9) extend into the through holes of the second flange plate (10). The through holes are tapered holes that are larger at the top and smaller at the bottom, and the embedded steel bars (9) are plug-welded and fixed in the through holes.

6. The transition connection structure between a Bailey beam trestle and a steel box girder trestle according to claim 1 or 4, characterized in that: The axis of the described support column (13) is aligned with the axis of the steel pipe pile foundation (12) below the reinforced concrete top cap (1).

7. The transition connection structure between a Bailey beam trestle and a steel box girder trestle according to claim 5, characterized in that: A stiffening plate (11) is welded between the described support column (13) and the second flange plate (10).

8. The transition connection structure between a Bailey beam trestle and a steel box girder trestle according to claim 2, characterized in that: The edge of the described bottom steel plate (4) is aligned with the bottom surface edge of the reinforced concrete top cap (1), and the shear studs (2) are distributed in a rectangular array on the bottom steel plate (4).

9. The transition connection structure between a Bailey beam trestle and a steel box girder trestle according to claim 7, characterized in that: The described stiffening plate (11) is located between the two embedded steel bars (9).

10. The transition connection structure between a Bailey beam trestle and a steel box girder trestle according to claim 5, characterized in that: The top of the described support column (13) is connected with the members of the Bailey beam trestle (15) through U-shaped bolts (16).

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