A highway bridge anti-cracking device

Abstract

The utility model discloses a highway bridge is with anti -cracking device belongs to bridge protection technical field, including pier, the top of pier is wrapped with the reinforcing cover in symmetrical type, the top of pier is connected with the bridge deck through the pier cap, support subassembly is connected in the both sides of reinforcing cover in symmetrical type for support subassembly, and the top of support subassembly is provided with protection subassembly, protection subassembly includes support plate, and both ends of support plate are fixedly connected with high -strength screw rod in symmetrical type, the outside of high -strength screw rod is equipped with the guide seat, the top of guide seat is fixedly connected with the pull plate. Through the setting of protection subassembly, can realize the traction protection to the bottom and both sides of bridge deck under the mutual cooperation of both sides pull plate and support plate, thereby reduces the diffusion to both sides when bridge deck is under the load, and further reduces the generation of bridge deck crack, and the use of bridge deck plays good protection effect.

Description

Technical Field

[0001] This utility model relates to the field of bridge protection technology, specifically a crack prevention device for highway bridges. Background Technology

[0002] Bridge protection refers to a series of technical measures and protective means taken to protect the structural safety of bridges, extend their service life, and ensure traffic safety. As an important transportation infrastructure, the structural health and safety of bridges are directly related to the smooth flow of traffic and the safety of people's lives and property. Therefore, bridge protection work is of utmost importance, especially in the prevention and protection of bridge cracks. Allowing bridge cracks to expand will lead to a gradual increase in danger.

[0003] An investigation revealed that a utility model patent (publication number: CN212200028U) discloses a crack-prevention device for highway bridges, comprising a bridge pier, a support fixedly installed on the top of the pier, a bridge deck fixedly installed on the top of the support, a support device overlapping the bottom of the bridge deck, and two rotating rods hinged to the bottom of the support device. An overlapping plate is hinged to the end of each rotating rod away from the support device. By setting up the support device, utilizing the direct contact between the load-bearing plate placed inside the storage plate and the bottom of the bridge deck, combined with the automatic resilience of the folded parts at the bottom of the load-bearing plate, the load-bearing plate can disperse and absorb the load-bearing force on the bridge deck, thereby reducing the load on the bridge deck and preventing cracks caused by excessive load. This crack-prevention device possesses the advantage of preventing bridge deck cracks, solving the problem of easy cracking of bridge decks and ensuring the normal use of highway bridges.

[0004] Although the aforementioned patent strengthens the bridge deck by installing support devices at the bridge deck abutments to prevent cracks from occurring due to heavy loads, when the bridge deck is subjected to loads, the force will not only disperse downwards but also spread to both sides of the bridge deck. This diffusion is more pronounced on the sides of the spliced ​​bridge deck, which in turn causes the bridge deck to shift to both sides and crack when subjected to loads.

[0005] Therefore, this utility model provides a crack prevention device for highway bridges to solve the above problems. Utility Model Content

[0006] This utility model provides a crack prevention device for highway bridges, aiming to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a crack prevention device for highway bridges, comprising: The bridge piers are symmetrically covered with reinforcing covers on their tops, and the tops of the bridge piers are connected to the bridge deck via pier caps. The support assembly is symmetrically connected to both sides of the reinforcing cover, and a protective assembly is provided on the top of the support assembly. The protective assembly includes a support plate, and high-strength screws are symmetrically fixedly connected to both ends of the support plate. A guide seat is sleeved on the outside of the high-strength screw, and a pull plate is fixedly connected to the top of the guide seat. The vertical end of the pull plate abuts against both sides of the bridge deck.

[0008] As a preferred technical solution of this application, the support component includes a support frame, and the areas of the support frame and the reinforcing cover that are in contact with each other are provided with a group of positioning holes in an array, and bolt fasteners are passed through the group of positioning holes. The horizontal ends of the support frame are provided with sunken bearing surfaces on both sides.

[0009] As a preferred technical solution of this application, a slide plate is slidably provided on the upper surface of the bearing surface via a slide rail, and shock-absorbing pads are fixedly connected above the horizontal plane of the middle section of the slide plate and the support frame.

[0010] As a preferred technical solution of this application, a support plate is fixedly connected to the top of the shock-absorbing pad located above the support frame, and a guide seat is fixedly connected to the top of the shock-absorbing pad located above the slide plate. The upper surface of the slide plate is at the same horizontal plane as the upper horizontal plane of the support frame.

[0011] As a preferred technical solution of this application, a guide shaft is fixedly connected to one end of the pull plate near the support plate, and the guide shaft is inserted into the inside of the support plate. A high-strength nut is threadedly connected to the outside of the high-strength screw, and the high-strength nut abuts against the outer wall of the guide seat.

[0012] As a preferred technical solution of this application, the pull plates are symmetrically distributed on both sides of the support plate, the cross-section of the pull plates is L-shaped, and the length of the guide shaft is less than half the length of the support plate.

[0013] The beneficial effects of this application are as follows: 1. This utility model, through the setting of protective components, can achieve tensile protection on the bottom and sides of the bridge deck through the cooperation of the two side pull plates and the support plate, thereby reducing the spread of the bridge deck to both sides when it is under load, thus reducing the generation of bridge deck cracks and playing a good protective role for the use of the bridge deck. At the same time, the two side pull plates can be flexibly moved, so that the device can better adapt to bridge decks of different widths for safety protection and improve its adaptability. 2. This utility model, through the auxiliary cooperation of the support components, enables the protective components to simultaneously provide auxiliary support to the bottom of the bridge deck, further improving the load-bearing capacity of the bridge deck. At the same time, with the cooperation of the shock-absorbing pads, the load is quickly absorbed, further preventing the bridge deck from resonating and causing cracks, thus further improving the protective effect of the bridge deck. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present utility model; Figure 2 This is a schematic diagram of the distribution structure of the protective components of this utility model; Figure 3 This is a schematic diagram of the connection state structure of the support component of this utility model; Figure 4 This is a schematic diagram of the partial explosion structure of the protective component of this utility model.

[0015] In the picture: 1. Pier; 2. Reinforcing cover; 3. Support component; 31. Support frame; 32. Bearing surface; 33. Slide rail; 34. Slide plate; 35. Shock absorber; 4. Protective component; 41. Support plate; 42. High-strength screw; 43. Guide seat; 44. Pull plate; 45. Guide shaft; 46. High-strength nut; 5. Bridge deck. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1-4 As shown, this utility model provides a crack prevention device for highway bridges, comprising: The bridge pier 1 is symmetrically covered with a reinforcing cover 2. The top of the bridge pier 1 is connected to the bridge deck 5 through a pier cap. A shock-absorbing pad 35 is also connected between the pier cap and the bridge deck 5 to ensure the overall buffering effect of the bridge deck 5 and avoid hard resonance that could cause cracks in the bridge deck 5. Support component 3 is symmetrically connected to both sides of reinforcing cover 2, and protective component 4 is provided on the top of support component 3. Protective component 4 includes support plate 41, and high-strength screws 42 are symmetrically fixed to both ends of support plate 41. Guide seat 43 is sleeved on the outside of high-strength screws 42. Pull plate 44 is fixedly connected to the top of guide seat 43, and the vertical end of pull plate 44 abuts against both sides of bridge deck 5. Through the auxiliary cooperation of support component 3 and protective component 4, the bottom and sides of bridge deck 5 are well supported and protected, thereby reducing the probability of cracks in bridge deck 5.

[0018] Furthermore, the support component 3 includes a support frame 31. The areas where the support frame 31 and the reinforcing cover 2 come into contact with each other are provided with a set of positioning holes in an array, and bolt fasteners pass through the positioning holes. The horizontal ends of the support frame 31 are provided with sunken bearing surfaces 32 on both sides. The vertical and horizontal ends of the support frame 31 are integrally formed with reinforcing ribs in an array, which further improves the stability and firmness of the support frame 31.

[0019] Furthermore, a slide plate 34 is slidably mounted on the upper surface of the bearing surface 32 via a slide rail 33. Shock-absorbing pads 35 are fixedly connected above the middle horizontal plane of the slide plate 34 and the support frame 31. A support plate 41 is fixedly connected to the top of the shock-absorbing pad 35 located above the support frame 31, and a guide seat 43 is fixedly connected to the top of the shock-absorbing pad 35 located above the slide plate 34. The upper surface of the slide plate 34 is at the same horizontal plane as the upper horizontal plane of the support frame 31. The slide rail 33 includes two parts: a guide rail and a slider. The guide rail is fixedly connected to the upper surface of the bearing surface 32, and the slider is fixedly connected to the bottom of the slide plate 34. Thus, the horizontal sliding support of the slide plate 34 can drive the upper guide seat 43 to be flexibly adjusted.

[0020] Furthermore, a guide shaft 45 is fixedly connected to one end of the pull plate 44 near the support plate 41, and the guide shaft 45 is inserted into the inside of the support plate 41. A high-strength nut 46 is connected to the external thread of the high-strength screw 42, and the high-strength nut 46 abuts against the outer wall of the guide seat 43. The pull plates 44 are symmetrically distributed on both sides of the support plate 41. The cross-section of the pull plate 44 is L-shaped. The length of the guide shaft 45 is less than half the length of the support plate 41, ensuring that the guide shafts 45 on both sides can be fully inserted into the inside of the support plate 41. By pulling the pull plates 44 on both sides, the vertical ends of the pull plates 44 on both sides can be flexibly adjusted indirectly, so as to adapt to bridge decks 5 of different widths for tension protection. At the same time, under the locking cooperation of the high-strength nut 46, the vertical ends of the pull plates 44 are tightly abutted against the side of the bridge deck 5.

[0021] Working principle: First, the device is installed and fixed. Then, the position of the pull plate 44 is adjusted so that the vertical end of the pull plate 44 abuts against the side of the bridge deck 5. Then, the high-strength nut 46 is installed. When the high-strength nut 46 is threadedly connected to the high-strength screw 42, the high-strength nut 46 continuously abuts against the guide seat 43, so that the vertical end of the pull plate 44 is tightly attached to the side of the bridge deck 5. Through the mutual cooperation of the pull plates 44 on both sides, the bridge deck 5 is protected by tension, thereby reducing the spread of the load to both sides when the bridge deck 5 is under load, thus reducing the risk of cracks. At the same time, the auxiliary support of the bottom of the bridge deck 5 by the protective component 4 can improve the load-bearing effect of the bridge deck 5, preventing cracks from occurring when the bridge deck 5 is under heavy load, thus providing a good protective effect for the bridge deck 5 and reducing the occurrence of cracks during the use of the bridge deck 5.

[0022] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A crack prevention device for highway bridges, characterized in that: Includes a bridge pier (1), the top of which is symmetrically covered with a reinforcing cover (2), and the top of which is connected to the bridge deck (5) through a pier cap. Support component (3) is symmetrically connected to both sides of reinforcing cover (2), and a protective component (4) is provided on the top of support component (3). The protective component (4) includes a support plate (41), and high-strength screws (42) are symmetrically fixedly connected to both ends of the support plate (41). A guide seat (43) is sleeved on the outside of the high-strength screw (42). A pull plate (44) is fixedly connected to the top of the guide seat (43), and the vertical end of the pull plate (44) abuts against both sides of the bridge deck (5).

2. A crack prevention device for a highway bridge according to claim 1, characterized in that: The support component (3) includes a support frame (31). The areas where the support frame (31) and the reinforcing cover (2) come into contact with each other are provided with a group of positioning holes in an array, and bolt fasteners pass through the group of positioning holes. The support frame (31) has a bearing surface (32) on both sides of the horizontal end.

3. The anti-cracking device for highway bridges according to claim 2, characterized in that: The upper surface of the bearing surface (32) is slidably provided with a slide plate (34) via a slide rail (33), and shock-absorbing pads (35) are fixedly connected above the horizontal plane of the middle section of the slide plate (34) and the support frame (31).

4. A crack prevention device for a highway bridge according to claim 3, characterized in that: A support plate (41) is fixedly connected to the top of the shock-absorbing pad (35) located above the support frame (31), and a guide seat (43) is fixedly connected to the top of the shock-absorbing pad (35) located above the slide plate (34). The upper surface of the slide plate (34) is at the same level as the horizontal plane above the support frame (31).

5. The anti-cracking device for highway bridges according to claim 1, characterized in that: The pull plate (44) is fixedly connected to a guide shaft (45) at one end near the support plate (41), and the guide shaft (45) is inserted into the inside of the support plate (41). The high-strength screw (42) is threaded with a high-strength nut (46), and the high-strength nut (46) abuts against the outer wall of the guide seat (43).

6. A crack prevention device for highway bridges according to claim 5, characterized in that: The pull plates (44) are symmetrically distributed on both sides of the support plate (41). The cross-section of the pull plates (44) is L-shaped. The length of the guide shaft (45) is less than half the length of the support plate (41).

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