Protective shed for bridge tower construction of road-crossing steel bridge

Abstract

The utility model discloses a protective shed for bridge tower construction of a road-crossing steel bridge, which is respectively arranged on two sides of a main bridge and comprises a plurality of expanded foundations constructed on two sides of a road shoulder at intervals, a steel pipe upright post is erected on each expanded foundation, a steel pipe is used as a steel pipe connecting system between every two upright posts, a longitudinal beam is arranged at the top of each steel pipe upright post, and the top surface of each longitudinal beam is flush with the top surface of the main bridge. A plurality of single-layer double-row bailey trusses are arranged between the longitudinal beams and the top face of the main bridge to serve as supporting beams, a plurality of pieces of profile steel are laid on the bailey trusses to serve as distribution beams, and steel plates are fully laid on the distribution beams and fixedly welded to the distribution beams. The protective shed is designed according to construction conditions, the two sides of the steel beam are ingeniously adopted as supporting points, the stress of the protective shed structure is shared, and the construction difficulty of a large-span protective shed is solved to a certain extent. The construction requirement is met, and the construction difficulty is lowered. Meanwhile, after construction is completed, the steel plates are separated, the protective shed body can be lifted away and recycled, the construction period is effectively shortened, and the economic cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of road-spanning steel bridge construction, in particular to a road-spanning steel bridge tower construction protection shed. Background Art

[0002] With the increasing number of long-span bridges across roads and rivers, construction companies are faced with higher quality requirements and technical challenges. For large-span steel bridges across roads, in order to ensure the safety of vehicles and personnel, a protective shed needs to be set up during the construction of the upper bridge tower. At present, the protective sheds commonly used in construction have complex structures, are difficult to construct, and are not easy to dismantle later. Therefore, a protective shed is urgently needed to solve the above problems. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a protective shed for the construction of a bridge tower of a road-spanning steel bridge.

[0004] The technical solution adopted by the utility model is a protective shed for the construction of a bridge tower of a steel bridge across the road, which are arranged on both sides of the main bridge respectively, including a plurality of expanded foundations constructed at intervals on both sides of the highway shoulders, a steel pipe column is erected on each expanded foundation, steel pipes are used as a steel pipe connection system between the two steel pipe columns, a longitudinal beam is arranged on the top of the steel pipe column, and its top surface is flush with the top surface of the main bridge, a plurality of single-layer double-row Bailey frames are arranged between the longitudinal beam and the top surface of the main bridge as supporting beams, a plurality of steel sections are laid on the Bailey frames as distribution beams, and the distribution beams are fully covered with steel plates, which are welded and fixed to the distribution beams.

[0005] Furthermore, a top plate whose outer circumference extends beyond the circumferential contour of the steel tube column is arranged at the upper end of the steel tube column, and four lower rib plates are evenly distributed around the circumference of the steel tube column to connect the top plate and the steel tube column.

[0006] Furthermore, the steel pipe connection system is in an 8-shape, with two steel pipes arranged at the top and bottom, and two steel pipes in the middle arranged crosswise, and all are welded to the steel pipe columns.

[0007] Furthermore, the longitudinal beam adopts double-jointed I-beams.

[0008] Furthermore, the Bailey frame is arranged directly above the steel pipe column, and the first upper rib plate is vertically arranged in the double I-beam, the first upper rib plate corresponds to being directly below each row of Bailey plates of the Bailey frame, and the second upper rib plate is arranged in the middle of the first upper rib plates on both sides, the second upper rib plate extends to the outside of the double I-beam, and the upper and lower ends thereof are flush with the upper and lower ends of the double I-beam.

[0009] Furthermore, the Bailey plate is fixed to the double I-beam through U-shaped transverse angle steel and vertical angle steel.

[0010] Furthermore, the distribution beams are arranged at intervals along the length direction of the support beam.

[0011] The utility model has the following beneficial effects:

[0012] The protective shed provided by the utility model is designed according to the construction conditions, and the two sides of the steel beam are cleverly used as support points to share the force of the protective shed structure, and to a certain extent, it also solves the difficulty of constructing a large-span protective shed. It not only meets the construction requirements but also simplifies the construction difficulty. At the same time, after the construction is completed, the steel plate is separated, and the main body of the protective shed can be lifted off and used in a turnover manner, which effectively shortens the construction period and saves economic costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the plan layout of the utility model;

[0014] Figure 2 It is the elevation layout diagram of the utility model;

[0015] Figure 3 for Figure 2 Medium A large sample picture;

[0016] Figure 4 It is a schematic diagram of the first upper rib plate of the utility model;

[0017] Figure 5 It is a schematic diagram of the second upper rib plate of the utility model;

[0018] Figure 6 It is a schematic diagram of the lower rib plate of the utility model;

[0019] Figure 7 for Figure 1 BB section diagram in;

[0020] Figure 8 for Figure 7 Medium C large sample picture;

[0021] Fig. 9 for Figure 1 DD cross-section diagram in.

[0022] In the figure: 1. Steel plate; 2. Distribution beam; 3. Support beam; 4. Supporting flower rack; 5. Longitudinal beam; 6. First upper rib plate; 7. Second upper rib plate; 8. Horizontal angle steel; 9. Vertical angle steel; 10. Top plate; 11. Lower rib plate; 12. Expanded foundation; 13. Steel pipe column; 14. Steel pipe connection system. DETAILED DESCRIPTION

[0023] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of the utility model of a construction protection shed for a steel bridge tower across a road in conjunction with the accompanying drawings.

[0024] like Figure 1As shown, the main bridge is obliquely intersected with the highway, and the protective sheds are arranged on both sides of the main bridge, and their arrangement is symmetrical about the origin. The foundation treatment adopts an enlarged foundation 12, which is arranged on both sides of the original highway shoulder, that is, multiple enlarged foundations 12 are constructed at intervals on both sides of the original highway shoulder.

[0025] like Figure 2 and Figure 3 As shown, steel pipe columns 13 are arranged on the expanded foundation 12, and steel pipe connection systems 14 are made between the steel pipe columns 13. The steel pipe connection system 14 is in the shape of an 8, with two steel pipes arranged on the top and bottom, and two steel pipes in the middle are arranged crosswise, and are all welded to the steel pipe columns 13. A longitudinal beam 5 is arranged on the top of the steel pipe column 13. The longitudinal beam 5 is made of double-jointed I-beams, and its top surface is flush with the top surface (steel beam) of the main bridge. The longitudinal beam 5 and the top surface of the main bridge are arranged with multiple single-layer double-row Bailey frames as support beams 3. The Bailey frames are composed of double rows of Bailey plates connected by supporting flower racks 4. Multiple sections of steel are laid on the Bailey frames to make distribution beams 2. The distribution beams 2 are arranged at intervals along the length direction of the support beams 3. The steel plates 1 are fully laid on the distribution beams 2, and the steel plates 1 are fixed on the distribution beams 2 by welding.

[0026] like Figure 4~Figure 9 As shown, in this embodiment, the top plate 10 is fixed to the upper end of the steel pipe column 13, and the double-piece I-beam is placed on the top plate 10. The outer periphery of the top plate 10 extends beyond the circumferential contour of the steel pipe column 13, and four lower ribs 11 are evenly distributed circumferentially and welded to connect the top plate 10 and the steel pipe column 13. The Bailey frame is set just above the steel pipe column 13, and the first upper rib 6 with a profile cut is vertically welded in the double-piece I-beam. The first upper rib 6 corresponds to the Bailey sheet just below. The middle of the first upper rib 6 on both sides is set with a profile cut second upper rib 7, and the second upper rib 7 extends to the outside of the double-piece I-beam, and its upper and lower ends are flush with the upper and lower ends of the double-piece I-beam, and the lower end is supported on the top plate 10. The Bailey sheet is fixed to the double-piece I-beam through a U-shaped transverse angle steel 8 and a vertical angle steel 9.

[0027] The protective shed should be designed through professional calculations to ensure that its strength, rigidity and stability meet the requirements of the design and specifications before it can be put into construction.

[0028] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A protective shed for the construction of a steel bridge tower across a road, arranged on both sides of the main bridge, characterized in that: The invention comprises a plurality of expanded foundations (12) constructed at intervals on both sides of the highway shoulder, a steel pipe column (13) being erected on each expanded foundation (12), a steel pipe connecting system (14) being formed between two steel pipe columns (13), a longitudinal beam (5) being arranged on the top of the steel pipe column (13), the top surface of which is flush with the top surface of the main bridge, a plurality of single-layer double-row Bailey frames being arranged between the longitudinal beam (5) and the top surface of the main bridge as supporting beams (3), a plurality of section steels being laid on the Bailey frames as distribution beams (2), a steel plate (1) being fully laid on the distribution beams (2), and the steel plate (1) being welded and fixed on the distribution beams (2).

2. The protective shed for construction of a steel bridge tower across a road according to claim 1 is characterized in that: A top plate (10) having an outer circumference extending beyond the circumferential contour of the steel tube column (13) is disposed at the upper end of the steel tube column (13); four lower rib plates (11) are evenly distributed around the circumference of the steel tube column (13) to connect the top plate (10) and the steel tube column (13).

3. The protective shed for construction of a steel bridge tower across a road according to claim 1 is characterized in that: The steel pipe connection system (14) is in the shape of an 8, with two steel pipes arranged at the top and the bottom, and two steel pipes in the middle arranged crosswise, and all welded to the steel pipe column (13).

4. The protective shed for construction of a steel bridge tower across a road according to claim 1 is characterized in that: The longitudinal beam (5) is made of double-jointed I-beams.

5. The protective shed for construction of a steel bridge tower across a road according to claim 4 is characterized in that: The Bailey frame is arranged directly above the steel pipe column (13), and a first upper rib plate (6) is vertically arranged in the double-jointed I-beam. The first upper rib plate (6) corresponds to being directly below each row of Bailey plates of the Bailey frame. A second upper rib plate (7) is arranged in the middle of the first upper rib plates (6) on both sides. The second upper rib plate (7) extends to the outside of the double-jointed I-beam, and its upper and lower ends are flush with the upper and lower ends of the double-jointed I-beam.

6. The protective shed for construction of a steel bridge tower across a road according to claim 5 is characterized in that: The Bailey plate is fixed on the double-jointed I-beam by means of a U-shaped transverse angle steel (8) and a vertical angle steel (9).

7. The protective shed for construction of a steel bridge tower across a road according to any one of claims 1 to 6, characterized in that: The distribution beams (2) are arranged at intervals along the length direction of the support beam (3).

Images