Highway bridge cofferdam structure

Abstract

The utility model relates to the technical field of highway bridge construction, and discloses a highway bridge cofferdam structure which comprises an outer cofferdam, a plurality of steel sheet piles are slidably connected to the outer portion of the outer cofferdam, mounting shells are fixedly connected to the outer portions of the steel sheet piles, springs are fixedly connected to the interiors of the mounting shells, and the springs are fixedly connected to the outer portion of the outer cofferdam. And the sides, away from the steel sheet piles, of the springs are fixedly connected with limiting blocks, the sides, away from the springs, of the limiting blocks are fixedly connected with extrusion heads, the sides, away from the limiting blocks, of the extrusion heads are fixedly connected with wave-proof plates, and an inner cofferdam is arranged in the outer cofferdam. According to the utility model, the wave-proof plate pushes the extrusion head to extrude the spring in the mounting shell, the spring rebounds to remove most impact force, and the mounting shell is uniformly distributed on the steel sheet pile on the outer cofferdam, so that the effect of protecting the steel sheet pile from being impacted by stormy waves firstly is realized, and the service life of the steel sheet pile is prolonged; and the potential safety hazard of the whole project is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of highway bridge construction, in particular to a highway bridge cofferdam structure. Background Art

[0002] Highway bridge cofferdams are temporary water retaining structures built during bridge construction, especially underwater construction, to create a dry construction environment. Their main function is to prevent water from entering the construction area, while also protecting the foundation pit, preventing water scouring and erosion, and ensuring construction safety and quality. Different types of cofferdams are suitable for different conditions. For example, earth cofferdams are suitable for rivers with shallow water depths and low flow rates, while steel sheet pile cofferdams are suitable for rivers with deep water and high flow rates or coastal areas. The construction process of steel sheet pile cofferdams generally includes construction preparation, measurement and positioning, inserting steel sheet piles, layer-by-layer internal support, drainage and dredging, and pouring and sealing the bottom.

[0003] When the wind and waves are strong, the steel sheet pile cofferdam will be impacted by the wind and waves. In the existing technology, most of the steel sheet pile cofferdams are not equipped with an outer wave-proof mechanism. The steel sheet piles are directly exposed to the impact of wind and waves, which causes great damage to the steel sheet piles, reduces the service life of the steel sheet piles, and increases the safety hazards of the overall project. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a highway bridge cofferdam structure, which aims to improve the problem that the service life of steel sheet piles is reduced due to the lack of an outer wave-proof mechanism, thereby increasing the safety hazards of the overall project.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a highway bridge cofferdam structure, including an outer weir, the outer side of the outer weir is slidably connected to a plurality of steel sheet piles, the outer side of the steel sheet pile is fixedly connected to a mounting shell, the inside of the mounting shell is fixedly connected to a spring, the side of the spring away from the steel sheet pile is fixedly connected to a limiting block, the side of the limiting block away from the spring is fixedly connected to an extrusion head, the side of the extrusion head away from the limiting block is fixedly connected to a wave-breaking plate, the inner side of the outer weir is provided with an inner cofferdam, the inner bottom end of the inner cofferdam is fixedly connected to a working surface, and the top of the working surface is provided with a supporting mechanism.

[0006] As a further description of the above technical solution:

[0007] The supporting mechanism includes a U-shaped frame, the bottom of the U-shaped frame is fixedly connected to the top of the working surface, the inside of the U-shaped frame is rotatably connected to a rotating shaft, the outside of the rotating shaft is sleeved with a torsion spring, the inside of the U-shaped frame is rotatably connected to a support rod, the inside of the support rod is fixedly connected to a reset spring, the top of the reset spring is fixedly connected to a limiting plate, and the top of the limiting plate is fixedly connected to a detection rod.

[0008] As a further description of the above technical solution:

[0009] Earth is filled between the outer cofferdam and the inner cofferdam.

[0010] As a further description of the above technical solution:

[0011] The limit block is slidably connected to the interior of the installation shell, and the extrusion head penetrates the end of the installation shell away from the steel sheet pile.

[0012] As a further description of the above technical solution:

[0013] Both sides of the wave-breaking plate are rotatably connected with connecting pieces.

[0014] As a further description of the above technical solution:

[0015] One end of the torsion spring is fixedly connected to the inside of the U-shaped frame, and the other end of the torsion spring is fixedly connected to the outside of the rotating shaft.

[0016] As a further description of the above technical solution:

[0017] The limiting plate is slidably connected to the inside of the supporting rod, and a probe is arranged on the top of the detecting rod.

[0018] As a further description of the above technical solution:

[0019] The detection rod passes through the outside of the inner cofferdam.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the wave-breaking plate pushes the extrusion head to extrude the spring inside the installation shell, and the spring rebounds to remove most of the impact force. The spring pushes the limit block to push the extrusion head to reset the wave-breaking plate, and the installation shell is evenly distributed on the steel sheet piles on the surface of the outer weir. When impacted, the overall outer weir is more evenly stressed, which achieves the effect of protecting the steel sheet piles from being impacted by wind and waves first, thereby increasing the service life of the steel sheet piles and reducing the safety hazards of the overall project.

[0022] 2. In the utility model, the support rod is pulled up so that its top end is in contact with the inner surface of the inner cofferdam to support it, so that the detection rod passes through the inner cofferdam and penetrates into the interior of the earth. The torsion force of the torsion spring allows the support rod to slowly unload the force through the U-shaped frame. The rebound force of the reset spring inside the support rod allows the detection rod to always be inserted into the interior of the earth through the limit plate, thereby monitoring the changes in earth pressure and humidity throughout the process, and supporting the cofferdam structure while monitoring the changes in the earth state. There is no need to set up a separate detection mechanism, which reduces operating costs and improves operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a highway bridge cofferdam structure proposed by the utility model;

[0024] Figure 2 A schematic diagram of a steel sheet pile for a highway bridge cofferdam structure proposed by the utility model;

[0025] Figure 3 A cross-sectional view of an installation shell of a highway bridge cofferdam structure proposed by the utility model;

[0026] Figure 4 The utility model is a schematic diagram of a supporting mechanism of a highway bridge cofferdam structure.

[0027] Legend:

[0028] 1. Outer weir; 2. Inner cofferdam; 3. Steel sheet pile; 4. Mounting shell; 5. Spring; 6. Limit block; 7. Extrusion head; 8. Wave-breaking plate; 9. Connector; 10. Working surface; 11. U-shaped frame; 12. Rotating shaft; 13. Torsion spring; 14. Support rod; 15. Probe rod; 16. Limit plate; 17. Reset spring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1 - Figure 2The utility model provides an embodiment: a highway bridge cofferdam structure, including an outer weir 1, the outer weir 1 plays a protective role, the outer side of the outer weir 1 is slidably connected with a plurality of steel sheet piles 3, the steel sheet piles 3 play the role of forming a cofferdam, the outer side of the steel sheet pile 3 is fixedly connected with a mounting shell 4, the mounting shell 4 plays the role of fixing the internal structure, the inner side of the mounting shell 4 is fixedly connected with a spring 5, the spring 5 plays the role of providing elastic force, the side of the spring 5 away from the steel sheet pile 3 is fixedly connected with a limiting block 6, the limiting block 6 plays the role of preventing the spring 5 from falling off, the side of the limiting block 6 away from the spring 5 is fixedly connected with an extrusion head 7, the extrusion head 7 plays the role of extruding a wave-breaking plate 8, the side of the extrusion head 7 away from the limiting block 6 is fixedly connected with a wave-breaking plate 8, the wave-breaking plate 8 plays the role of preventing wave impact, the inner side of the outer weir 1 is provided with an inner cofferdam 2, the inner cofferdam 2 plays a protective role, the inner bottom end of the inner cofferdam 2 is fixedly connected with a working surface 10, the working surface 10 plays the role of supporting the upper structure, and the top of the working surface 10 is provided with a supporting mechanism, the supporting mechanism plays the role of supporting the cofferdam structure.

[0031] Reference Figure 3 - Figure 4 The supporting mechanism includes a U-shaped frame 11, which plays a role in fixing the internal structure. The bottom of the U-shaped frame 11 is fixedly connected to the top of the working surface 10. The internal rotation of the U-shaped frame 11 is connected to a rotating shaft 12, which plays a role in rotation. The external sleeve of the rotating shaft 12 is provided with a torsion spring 13, which plays a role in providing torsion. The internal rotation of the U-shaped frame 11 is connected to a support rod 14, which plays a role in supporting the inner cofferdam 2. The internal fixed connection of the support rod 14 is a reset spring 17, which plays a role in providing elastic force. The top of the reset spring 17 is fixedly connected to a limit plate 16, which plays a role in preventing the reset spring 17 from falling off. The top of the limit plate 16 is fixedly connected to a detection rod 15, which plays a role in monitoring the earthwork status. Earth is filled between the outer weir 1 and the inner cofferdam 2, the limit block 6 is slidably connected to the inside of the mounting shell 4, the extrusion head 7 passes through the end of the mounting shell 4 away from the steel sheet pile 3, the two sides of the wave-breaking plate 8 are rotatably connected with connecting parts 9, one end of the torsion spring 13 is fixedly connected to the inside of the U-shaped frame 11, and the other end of the torsion spring 13 is fixedly connected to the outside of the rotating shaft 12, the limit plate 16 is slidably connected to the inside of the support rod 14, and a probe is provided on the top of the detection rod 15, and the detection rod 15 passes through the outside of the inner cofferdam 2.

[0032] Working principle: When wind and waves hit, the impact force will first reach the surface of the wave-breaking plate 8, and the wave-breaking plate 8 will push the extrusion head 7 to squeeze the spring 5 inside the mounting shell 4. The spring 5 rebounds to remove most of the impact force. The spring 5 pushes the limit block 6 to push the extrusion head 7 to reset the wave-breaking plate 8, and the mounting shell 4 is evenly distributed on the steel sheet piles 3 on the surface of the outer weir 1. When impacted, the overall outer weir 1 is subjected to more uniform force.

[0033] The support rod 14 is pulled up so that its top end is in contact with the inner surface of the inner cofferdam 2 to support it, so that the detection rod 15 passes through the inner cofferdam 2 and penetrates into the interior of the earth. The torsion force of the torsion spring 13 causes the support rod 14 to slowly unload the force through the U-shaped frame 11. The rebound force of the reset spring 17 in the support rod 14 allows the detection rod 15 to always be inserted into the interior of the earth through the limit plate 16, thereby monitoring the changes in earth pressure and humidity throughout the process.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A highway bridge cofferdam structure, comprising an outer weir (1), characterized in that: The outer side of the outer weir (1) is slidably connected to a plurality of steel sheet piles (3), the outer side of the steel sheet pile (3) is fixedly connected to a mounting shell (4), the inner side of the mounting shell (4) is fixedly connected to a spring (5), the side of the spring (5) away from the steel sheet pile (3) is fixedly connected to a limiting block (6), the side of the limiting block (6) away from the spring (5) is fixedly connected to an extrusion head (7), the side of the extrusion head (7) away from the limiting block (6) is fixedly connected to a wave-breaking plate (8), the inner side of the outer weir (1) is provided with an inner cofferdam (2), the inner bottom end of the inner cofferdam (2) is fixedly connected to a working surface (10), and the top end of the working surface (10) is provided with a supporting mechanism.

2. A highway bridge cofferdam structure according to claim 1, characterized in that: The support mechanism comprises a U-shaped frame (11), the bottom of the U-shaped frame (11) is fixedly connected to the top of the working surface (10), the interior of the U-shaped frame (11) is rotatably connected to a rotating shaft (12), the exterior of the rotating shaft (12) is sleeved with a torsion spring (13), the interior of the U-shaped frame (11) is rotatably connected to a support rod (14), the interior of the support rod (14) is fixedly connected to a return spring (17), the top end of the return spring (17) is fixedly connected to a limiting plate (16), and the top end of the limiting plate (16) is fixedly connected to a detection rod (15).

3. A highway bridge cofferdam structure according to claim 1, characterized in that: Earth is filled between the outer cofferdam (1) and the inner cofferdam (2).

4. A highway bridge cofferdam structure according to claim 1, characterized in that: The limit block (6) is slidably connected to the interior of the mounting shell (4), and the extrusion head (7) passes through an end of the mounting shell (4) away from the steel sheet pile (3).

5. The highway bridge cofferdam structure according to claim 1, characterized in that: Connecting pieces (9) are rotatably connected on both sides of the wave-breaking plate (8).

6. A highway bridge cofferdam structure according to claim 2, characterized in that: One end of the torsion spring (13) is fixedly connected to the inside of the U-shaped frame (11), and the other end of the torsion spring (13) is fixedly connected to the outside of the rotating shaft (12).

7. A highway bridge cofferdam structure according to claim 2, characterized in that: The limiting plate (16) is slidably connected to the inside of the supporting rod (14), and a probe is arranged at the top end of the detection rod (15).

8. A highway bridge cofferdam structure according to claim 2, characterized in that: The detection rod (15) passes through the outside of the inner cofferdam (2).

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