Device for reinforcing shear stress resistance of bridge deck steel plate

Abstract

The utility model provides a bridge deck steel plate shear stress resistance reinforcing device, which relates to the technical field of bridge deck steel plate reinforcement and comprises a steel plate, a reinforcing component is arranged at the bottom of the steel plate, a group of fixing blocks are symmetrically arranged on the reinforcing component and the outer walls of the two sides of the steel plate, and bolts are rotatably arranged in the fixing blocks in a threaded manner. The reinforcing steel plates drive the positioning columns to be in sliding connection with the positioning grooves, then the fixing blocks are matched with the bolts, the steel plates are fixedly connected with the reinforcing assemblies, and concentrated shear stress can be transmitted in multiple paths in the longitudinal direction, the transverse direction and the inclined direction through a #-shaped structure formed by the crisscrossed clamping grooves and the cross beams; the problem of stress concentration of a traditional one-way stiffening rib is avoided, the bending resistance and torsional rigidity of the bridge deck steel plate are greatly improved, the bending deformation degree of the steel plate can be reduced under the working condition of unbalance loading or emergency braking of vehicles, and the flatness of a bridge deck pavement layer and driving safety are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of bridge deck steel plate reinforcement technology, and in particular to a bridge deck steel plate shear stress reinforcement device. Background Technology

[0002] With the advancement of bridge engineering technology, steel-concrete composite beam bridges have been widely used in the construction of urban overpasses, highways, and long-span bridges due to their advantages such as light weight, convenient construction, and high load-bearing capacity. As the core load-bearing component of composite beam bridges, the bridge deck steel plates directly bear vehicle loads, temperature stresses, and environmental effects. Especially in negative bending moment areas or areas with concentrated loads, they are prone to problems such as local buckling of the steel plates and weld cracking due to shear stress concentration, seriously affecting the structural durability and safety.

[0003] In existing technologies, traditional reinforcement devices often lack systematic optimization of shear force transmission paths, resulting in uneven stress distribution and difficulty in adapting to complex stress environments. Utility Model Content

[0004] This utility model mainly provides a device for reinforcing the shear stress of bridge deck steel plates.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bridge deck steel plate shear stress reinforcement device, comprising a steel plate, a reinforcement component at the bottom of the steel plate, a set of fixing blocks symmetrically arranged on the outer walls of both sides of the reinforcement component and the steel plate, each fixing block having a threaded bolt inside, the fixing blocks and bolts driving the steel plate to be fixedly connected to the reinforcement component, and a buffer component at the bottom of the reinforcement component, the buffer component being used to buffer the load on the steel plate.

[0006] Preferably, the reinforcing component includes four sets of positioning grooves formed on the bottom of the steel plate, each positioning groove having a positioning post slidably connected to it, each positioning post having a reinforcing steel plate fixedly connected to its bottom, and three sets of longitudinal beams fixedly arranged longitudinally on the bottom of the reinforcing steel plate, each longitudinal beam having a set of slots symmetrically formed on its bottom surface, each slot having a crossbeam engaged in it, each longitudinal beam and crossbeam having a threaded rod slidably connected to it, each longitudinal beam having auxiliary grooves formed on its front and rear surfaces, each threaded rod having a self-locking nut threadedly connected to its front and rear surfaces, and each longitudinal beam having a support post on its bottom surface.

[0007] Preferably, the longitudinal beams and cross beams are combined in a grid pattern, and the longitudinal beams are detachably connected to the cross beams via slots.

[0008] Preferably, all self-locking nuts are polygonal in design, and the outer wall of each self-locking nut is provided with anti-slip texture. The outer surface of the self-locking nut is flush with the outer wall of the longitudinal beam.

[0009] Preferably, the inner wall of the self-locking nut is provided with an internal thread, and the front and rear ends of the threaded rod are provided with external threads that are adapted to the self-locking nut, and the threads are only distributed on the front and rear end surfaces of the threaded rod.

[0010] Preferably, the positioning post is cylindrical, and the positioning groove is a countersunk hole adapted to the shape of the positioning post, so that the positioning post fits into the positioning groove.

[0011] Preferably, the buffer assembly includes a sliding seat slidably disposed on the surface of the support column. The outer wall of each sliding seat has multiple sets of rotating grooves, and each rotating groove is rotatably connected to a roller. The outer wall of the roller is in contact with the inner wall of the sliding seat. Three sets of springs are symmetrically arranged on the inner wall of each sliding seat. Each of the three sets of outer walls of the sliding seats is fixedly connected to a connecting plate, and the three sets of sliding seats are interconnected through the connecting plates.

[0012] Preferably, all three sets of springs are welded at equal intervals to the inner wall of the sliding seat, and the other end of each spring is welded to the bottom surface of the support column.

[0013] Preferably, the support column is rectangular in shape, and the sliding seat has a through hole that matches the support column.

[0014] Preferably, the rotating groove is provided in two sets, and the two sets of rotating grooves are symmetrically opened on the front and rear end surfaces of the support column.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this utility model, the positioning column and the positioning groove are slidably connected by the reinforcing steel plate, and then the steel plate and the reinforcing component are fixedly connected by the fixing block and bolts. Then, the grid structure composed of the crisscrossing slots and crossbeams can transmit the concentrated shear stress along multiple paths in the longitudinal, transverse and diagonal directions, avoiding the stress concentration problem of traditional unidirectional stiffening ribs, and greatly improving the bending and torsional stiffness of the bridge deck steel plate. Under the condition of vehicle eccentric loading or sudden braking, the degree of steel plate deflection deformation can be reduced, ensuring the flatness of the bridge deck pavement and driving safety.

[0017] 2. In this utility model, the roller rotates in the rotating groove and drives the support column to slide downward in the sliding seat, compressing the spring. Through the elastic deformation of the spring, the impact energy generated by the vehicle's dynamic load can be effectively absorbed, reducing the instantaneous shear stress amplitude transmitted to the steel plate and reducing fatigue damage in the stress concentration area. Attached Figure Description

[0018] Figure 1 A perspective view of the bridge deck steel plate shear stress reinforcement device is provided for this utility model;

[0019] Figure 2A bottom view of the structure of the bridge deck steel plate shear stress reinforcement device proposed in this utility model;

[0020] Figure 3 This utility model presents a partial cross-sectional structural diagram of the reinforcement components of the bridge deck steel plate shear stress reinforcement device;

[0021] Figure 4 This utility model presents a partial cross-sectional structural diagram of the buffer component of the bridge deck steel plate shear stress reinforcement device;

[0022] Figure 5 This utility model proposes a device for reinforcing the shear stress of bridge deck steel plates. Figure 3 Enlarged view of the structure at point A in the middle.

[0023] Legend: 1. Steel plate; 2. Reinforcing component; 21. Positioning groove; 22. Positioning column; 23. Reinforcing steel plate; 24. Fixing block; 25. Bolt; 26. Longitudinal beam; 27. Slot; 28. Crossbeam; 29. ​​Threaded rod; 210. Auxiliary groove; 211. Self-locking nut; 212. Support column; 3. Buffer component; 31. Sliding seat; 32. Rotary groove; 33. Roller; 34. Spring; 35. Connecting plate. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Please see Figures 1-5 This utility model provides a technical solution: a bridge deck steel plate shear stress reinforcement device, including a steel plate 1, a reinforcement component 2 at the bottom of the steel plate 1, a set of fixing blocks 24 symmetrically arranged on the outer walls of both sides of the reinforcement component 2 and the steel plate 1, and bolts 25 threaded inside the fixing blocks 24. The fixing blocks 24 and bolts 25 drive the steel plate 1 to be fixedly connected to the reinforcement component 2. A buffer component 3 is provided at the bottom of the reinforcement component 2, and the buffer component 3 is used to buffer the load on the steel plate 1.

[0027] like Figure 2 , Figure 3 and Figure 5As shown, the reinforcement component 2 includes four sets of positioning grooves 21 opened at the bottom of the steel plate 1. Positioning posts 22 are slidably connected in each positioning groove 21. Reinforcing steel plates 23 are fixedly connected to the bottom of each positioning post 22. Three sets of longitudinal beams 26 are longitudinally fixed at the bottom of the reinforcing steel plate 23. A set of slots 27 are symmetrically opened on the bottom surface of each longitudinal beam 26. A crossbeam 28 is engaged in each slot 27. Threaded rods 29 slide in both the longitudinal beam 26 and the crossbeam 28. Auxiliary grooves 210 are opened on the front and rear surfaces of the longitudinal beam 26. Self-locking nuts 211 are threadedly connected to the front and rear surfaces of the threaded rods 29. Support posts 212 are provided on the bottom surface of each longitudinal beam 26.

[0028] By reinforcing the steel plate 23 to drive the positioning column 22 to slide and connect with the positioning groove 21, and then by using the fixing block 24 and bolt 25 to fix the steel plate 1 to the reinforcing component 2, the grid structure formed by the crisscrossing slots 27 and crossbeams 28 can transmit the concentrated shear stress along multiple paths in the longitudinal, transverse and oblique directions, avoiding the stress concentration problem of traditional unidirectional stiffening ribs, and greatly improving the bending and torsional stiffness of the bridge deck steel plate 1. Under vehicle eccentric loading or sudden braking conditions, it can reduce the degree of steel plate deflection and deformation, and ensure the flatness of the bridge deck pavement and driving safety.

[0029] like Figure 2 As shown, the longitudinal beam 26 and the transverse beam 28 are combined in a grid-like design. The longitudinal beam 26 is connected to the transverse beam 28 by a slot 27. Through the grid structure formed by the crisscrossing slots 27 and the transverse beam 28, the concentrated shear stress can be transmitted along multiple paths in the longitudinal, transverse and diagonal directions, which greatly improves the bending and torsional stiffness of the bridge deck steel plate 1.

[0030] like Figure 5 As shown, the self-locking nuts 211 are all polygonal in design, and the outer wall of the self-locking nuts 211 is provided with anti-slip texture. The outer surface of the self-locking nuts 211 is flush with the outer wall of the longitudinal beam 26, which makes it easy for workers to use tools or their hands to rotate the self-locking nuts 211, reducing the occurrence of slippage when operating the self-locking nuts 211 by hand.

[0031] like Figure 5 As shown, the self-locking nut 211 has an internal thread on its inner wall, and the threaded rod 29 has external threads at its front and rear ends that are compatible with the self-locking nut 211. The threads are only distributed on the front and rear ends of the threaded rod 29, which can reduce the cost of using the threads on the threaded rod 29 and maximize the utilization of the threads on the threaded rod 29.

[0032] like Figure 4 As shown, the positioning post 22 is cylindrical in shape, and the positioning groove 21 is a countersunk hole that matches the shape of the positioning post 22. The positioning post 22 fits snugly with the positioning groove 21, which can make the positioning post 22 fit snugly with the positioning groove 21 and prevent the steel plate 1 and the reinforcing steel plate 23 from shaking during use.

[0033] like Figure 3 and Figure 5 As shown, the buffer assembly 3 includes a sliding seat 31 slidably disposed on the surface of the support column 212. Multiple sets of rotating grooves 32 are opened on the outer wall of the sliding seat 31. Rollers 33 are rotatably connected in the rotating grooves 32. The outer wall of the rollers 33 is in contact with the inner wall of the sliding seat 31. Three sets of springs 34 are symmetrically arranged on the inner wall of the sliding seat 31. Connecting plates 35 are fixedly connected to the outer walls of the three sets of sliding seats 31. The three sets of sliding seats 31 are interconnected through the connecting plates 35.

[0034] The roller 33 rotates in the slot 32, which drives the support column 212 to slide downward in the sliding seat 31 and compresses the spring 34. Through the elastic deformation of the spring 34, the impact energy generated by the vehicle's dynamic load can be effectively absorbed, reducing the instantaneous shear stress amplitude transmitted to the steel plate 1 and reducing fatigue damage in the stress concentration area.

[0035] like Figure 3 As shown, the three sets of springs 34 are all welded at equal intervals on the inner wall of the sliding seat 31, and the other end of each spring 34 is welded to the bottom surface of the support column 212. This allows the restoring force of the three sets of springs 34 to be evenly transmitted to the support column 212, thereby ensuring the stability of the support column 212 as it moves up and down within the sliding seat 31.

[0036] like Figure 3 As shown, the support column 212 is rectangular in shape, and the sliding seat 31 has through holes that are adapted to the support column 212. This allows the support column 212 and the sliding seat 31 to fit together fully on multiple sides, reducing the swaying of the support column 212 as it slides up and down in the sliding seat 31 and improving the stability of the support column 212 as it slides in the sliding seat 31.

[0037] like Figure 3 As shown, two sets of rotating grooves 32 are provided. The two sets of rotating grooves 32 are symmetrically opened on the front and rear end surfaces of the support column 212, which can change the sliding friction between the support column 212 and the sliding seat 31 into rolling friction, thereby reducing the surface friction damage of the support column 212.

[0038] The usage and working principle of this device are as follows: In use, the reinforcing steel plate 23 first drives the positioning column 22 to slide into the positioning groove 21. Then, the fixing block 24 and the bolt 25 cooperate to fix the steel plate 1 and the reinforcing steel plate 23. Next, the crossbeam 28 is slid into the slot 27 so that the crossbeam 28 is in contact with the bottom of the reinforcing steel plate 23. Then, the threaded rod 29 is slid into the slot 27 and the crossbeam 28. Then, the self-locking nut 211 is threaded on the threaded rod 29 and the self-locking nut 211 is fixed to the crossbeam 28 on the longitudinal beam 26. Through the grid structure formed by the crisscrossing slots 27 and the crossbeam 28, the concentrated shear stress can be transmitted along multiple paths in the longitudinal, transverse and diagonal directions, avoiding the stress concentration problem of traditional unidirectional stiffening ribs.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. Shear stress reinforcement device for steel deck plates, comprising a steel plate (1), characterized in that: The bottom of the steel plate (1) is provided with a reinforcing assembly (2), the reinforcing assembly (2) is symmetrically provided with a group of fixed blocks (24) on the two side walls of the steel plate (1), the fixed blocks (24) are all screwed with bolts (25), the fixed blocks (24) and the bolts (25) drive the steel plate (1) and the reinforcing assembly (2) to be fixedly connected, and the bottom of the reinforcing assembly (2) is provided with a buffer assembly (3) for buffering the bearing of the steel plate (1).

2. The shear stress reinforcement device for a bridge floor steel plate according to claim 1, characterized by: The reinforcing assembly (2) comprises four groups of positioning grooves (21) formed in the bottom of the steel plate (1), the positioning grooves (21) are all slidably connected with positioning columns (22), the bottom of the positioning column (22) is fixedly connected with a reinforcing steel plate (23), the bottom of the reinforcing steel plate (23) is longitudinally fixedly provided with three groups of longitudinal beams (26), the bottom end surface of the longitudinal beam (26) is symmetrically provided with a group of clamping grooves (27), the clamping groove (27) is all clamped with a cross beam (28), the longitudinal beam (26) and the cross beam (28) are all slidably provided with threaded rods (29), the front and rear end surfaces of the longitudinal beam (26) are all provided with auxiliary grooves (210), the front and rear end surfaces of the threaded rod (29) are all screw-connected with self-locking nuts (211), and the bottom end surface of the longitudinal beam (26) is all provided with support columns (212).

3. The shear stress reinforcement device for a bridge floor steel plate according to claim 2, characterized by: The longitudinal beam (26) and the cross beam (28) are combined in an inverted T-shaped design, and the longitudinal beam (26) is detachably connected with the cross beam (28) through the clamping groove (27).

4. The shear stress reinforcement device for a bridge floor steel plate according to claim 2, characterized by: The self-locking nuts (211) are all polygonal in design, the outer walls of the self-locking nuts (211) are all provided with anti-skid lines, and the outer end surfaces of the self-locking nuts (211) are flush with the outer walls of the longitudinal beam (26).

5. The shear stress reinforcement device for a bridge deck steel plate according to claim 2, characterized by: The inner wall of the self-locking nut (211) is provided with an internal thread, the front and rear ends of the threaded rod (29) are provided with external threads matched with the self-locking nut (211), and the threads are only distributed on the front and rear end surfaces of the threaded rod (29).

6. The shear stress reinforcement device for a bridge floor steel plate according to claim 2, characterized by: The positioning column (22) is cylindrical in design, the positioning groove (21) is formed as a counterbore matched with the shape of the positioning column (22), and the positioning column (22) is attached to the positioning groove (21).

7. The shear stress reinforcement device for a bridge deck steel plate according to claim 2, characterized by: The buffer assembly (3) comprises a sliding seat (31) slidably arranged on the surface of the support column (212), a plurality of rotating grooves (32) are formed in the outer wall of the sliding seat (31), a plurality of rotating grooves (32) are all rotatably connected with rollers (33), the outer wall of the roller (33) is attached to the inner wall of the sliding seat (31), three groups of springs (34) are symmetrically arranged on the inner wall of the sliding seat (31), three groups of the sliding seats (31) are all fixedly connected with connecting plates (35), and the three groups of sliding seats (31) are all connected with each other through the connecting plates (35).

8. The shear stress reinforcement device for a bridge deck steel plate according to claim 7, characterized by: The three groups of springs (34) are all welded on the inner wall of the sliding seat (31) at equal intervals, and the other ends of the springs (34) are all welded on the bottom end surface of the support column (212).

9. The shear stress reinforcement device for a bridge deck steel plate according to claim 7, characterized by: The support column (212) is rectangular in design, and the sliding seat (31) is internally provided with a through hole matched with the support column (212).

10. The shear stress reinforcement device for a bridge deck steel plate according to claim 7, characterized by: The rotating grooves (32) are provided in two groups, and the two groups of rotating grooves (32) are symmetrically provided on the front and rear end surfaces of the supporting column (212).

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