Bridge pier protection structure capable of resisting multistage impact of debris flow

Abstract

The utility model discloses an anti-debris flow multistage impact bridge pier protection structure which comprises RC columns evenly and fixedly arranged in the circumferential direction of a bridge pier, a plurality of buffering parts are fixedly arranged on the outer side faces, away from the bridge pier, of the RC columns, and each buffering part comprises a flexible material fixedly arranged on the outer side face of the RC column and a protection plate fixedly arranged on the outer side of the flexible material. A protective net is fixedly arranged on the inner side of the RC column; when debris flow disasters occur, overall impact of debris flow can be comprehensively protected, the multiple buffering parts form multiple flexible movable independent small faces, uneven impact of the debris flow can be finely divided, the debris flow impact resistance is high, the protection nets are arranged on the inner sides of the RC columns, gravel can be intercepted, the abrasion effect of the gravel on the bridge pier can be resisted, and the service life of the bridge pier is prolonged. The direct impact of debris flow on the bridge pier is effectively relieved, the bridge pier is protected against damage, the modularized buffering part is fixed to the outer side of the RC column, replacement and repair are convenient, and the continuity of the protection function is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, and particularly relates to a pier protection structure against multi-stage impact of debris flow. Background Art

[0002] In bridge engineering, as a key supporting part of the bridge structure, the safety of piers is of vital importance. Piers are often impacted by natural disasters such as debris flow in water, causing serious structural damage and safety hazards. Existing pier protection technologies usually use reinforcement materials such as reinforced concrete and protective walls to resist the impact of debris flow. They mainly rely on the fixation and closed design of high-strength materials to enhance the overall rigidity of the pier to cope with debris flow disasters. However, when facing the impact of large stones carried in debris flow, gravel abrasion, and uneven overall impact, these protection measures have limited effects and are difficult to effectively disperse and absorb impact energy, resulting in insufficient protection effects. Moreover, the overall rigid structure needs to be disassembled as a whole during maintenance and repair, with high maintenance difficulty and cost. Content of the Utility Model

[0003] The purpose of the utility model is to provide a pier protection structure against multi-stage impact of debris flow to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A pier protection structure against multi-stage impact of debris flow, including RC columns fixedly arranged uniformly along the circumferential direction of the pier. A plurality of buffer parts are fixedly arranged on the outer side surface of the RC column away from the pier. The buffer part includes a flexible material fixedly arranged on the outer side surface of the RC column and a protective plate fixedly arranged on the outer side of the flexible material. A protective net is fixedly arranged inside the RC column.

[0005] Further, the buffer part is fixedly connected to the outer side surface of the RC column through a loosening prevention fastening mechanism.

[0006] Detachably fixing the buffer part facilitates the overall rapid disassembly and replacement of the modular buffer part.

[0007] Further, the loosening prevention fastening mechanism includes a screw rod horizontally penetrating through the RC column and the buffer part, springs sleeved at both ends of the screw rod, and self-locking nuts arranged at both ends of the springs for pressing the springs. The self-locking nuts are threadedly connected to the screw rod.

[0008] By setting the loosening prevention fastening mechanism, the springs of the loosening prevention fastening mechanism and the self-locking nuts at both ends of the springs limit the buffer part to prevent the buffer part from falling off the screw rod.

[0009] Further, one end of the screw rod protrudes from the outer side surface of the buffer part.

[0010] The screw protrudes from the outer side of the buffer part. When a large stone impacts the buffer part, the screw can play an interception role, and the impact force is transmitted to the buffer part through multiple screws, increasing the force-bearing area of the buffer part and preventing the buffer part from being damaged due to excessive impact force.

[0011] Furthermore, the flexible material is made of waste tires. The flat side wall of the waste tire is fixedly connected to the outer side of the RC column through an anti-loosening fastening mechanism. The protective plate is made of wood, and through holes for the screws to pass through are arranged on the end face of the wood board.

[0012] Using waste tires and wood boards to make the buffer part has low manufacturing cost and low replacement and maintenance costs.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. In the present utility model, RC columns are evenly distributed around the bridge pier, and multiple buffer parts are arranged on the RC columns. The overall protective structure forms a 360° all-round protective layer around the bridge pier. When a debris flow disaster occurs, the overall impact force of the debris flow is first shunted in the first step by the outer layer of the protective structure. Moreover, the multiple buffer parts arranged on the RC columns form multiple flexible and movable independent small surfaces, which perform a second-step refined shunting on the uneven impact of the debris flow. In addition, the screws protruding from the end face of the buffer part can protect against the impact of large stones in the debris flow, and the anti-debris flow impact ability is strong. A protective net is arranged inside the RC column, which can intercept gravel and resist the abrasion effect of the gravel on the bridge pier, effectively alleviating the direct impact of the debris flow on the bridge pier and protecting the bridge pier from being damaged;

[0015] 2. The present utility model designs the RC column and the buffer part modularly, and the buffer part is integrally fixed on the RC column through an anti-loosening fastening mechanism. The buffer part is made of cheap waste tires and wood boards, which is convenient for repair and replacement, and the materials are easy to obtain. When the protection is damaged, it can be quickly repaired to ensure the continuity of the protection function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front sectional view of the bridge pier protection structure against multi-stage impact of debris flow provided by the embodiment of the present utility model;

[0017] Figure 2 is the top view of the bridge pier protection structure against multi-stage impact of debris flow provided by the embodiment of the present utility model

[0018] Figure 3 is the schematic diagram of the connection structure between the buffer part and the RC column provided by the embodiment of the present utility model;

[0019] Figure 4 is Figure 2 the sectional view at A-A in

[0020] In the figure, 1 is an RC column, 2 is a buffer part, 3 is a loosening prevention fastening mechanism, 4 is a protective net, 5 is a pier, 21 is a waste tire, 22 is a wooden board, 31 is a screw, 32 is a spring, and 33 is a self-locking nut. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 , the present invention provides a technical solution: a pier protection structure against multi-stage impacts of debris flow, including RC columns 1 fixedly arranged uniformly along the circumference of the pier 5. A plurality of buffer parts 2 are fixedly arranged on the outer side surface of the RC column 1 away from the pier 5. The buffer parts 2 are fixedly connected to the outer side surface of the RC column 1 through a loosening prevention fastening mechanism 3. A protective net 4 is fixedly arranged inside the RC column 1.

[0023] The buffer part 2 includes a waste tire 21 fixedly connected to the outer side surface of the RC column 1 through a loosening prevention fastening mechanism 3 and a wooden board 22 fixedly connected to the outer side of the waste tire 21 through a loosening prevention fastening mechanism 3.

[0024] The loosening prevention fastening mechanism 3 includes a screw 31 horizontally passing through the RC column 1 and the buffer part 2, springs 32 sleeved at both ends of the screw 31, and self-locking nuts 33 arranged at both ends of the springs 32 for pressing the springs 32. The self-locking nuts 33 are threadedly connected to the screw 31. Among them, through holes are provided at the four corners of the connection surface between the waste tire 21 and the RC column 1 for passing the screw 31, and both ends of the screw 31 are tightened by the self-locking nuts 33 to fix the waste tire 21 on the RC column 1. A plurality of through holes for passing the screw 31 are also provided on the wooden board 22, and both ends of the screw 31 are tightened by the self-locking nuts 33 to fix the wooden board 22 on the RC column 1 and press the wooden board 22 against the end surface of the waste tire 21. In this embodiment, one end of the screw 31 passing through the wooden board 22 protrudes from the end surface of the wooden board 22.

[0025] When a debris flow disaster occurs, the protection device forms a 360° all-round protection outside the pier 5. The debris flow first impacts the buffer part 2 on the outside, and conducts the first step of diversion on the overall impact force of the debris flow. The wooden board 22 of the buffer part 2 is impacted and conducts the impact force to the waste tire 21 behind the wooden board 22. The elastic effect of the waste tire 21 can offset part of the debris flow impact force, and the remaining impact force is received by the RC column 1, avoiding directly receiving the impact force by the rigidity of the RC column 1 and reducing the service life of the RC column 1. The multiple screw rods 31 protruding from the wooden board 22 can intercept large stones in the debris flow, and conduct the impact force to the wooden board 22 through the multiple screw rods 31, increasing the stress area of the wooden board 22, preventing the wooden board 22 from being damaged due to excessive impact force, and increasing the service life of the wooden board 22. The protection net 4 can intercept small gravel that breaks through the gap between the buffer part 2 and the RC column 1, and resist the abrasion of the small gravel on the pier 5 to cause damage to the pier 5; moreover, the buffer part 2 of the present utility model constitutes multiple independent buffer surfaces on the outer side surface of the RC column 1. When impacted by the debris flow, the multiple buffer parts 2 deform respectively, and refine and divert the uneven impact force inside the debris flow, further improving the buffer effect on the debris flow impact force.

[0026] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A pier protection structure against multi-level impacts of debris flow, characterized in that: It includes RC columns fixedly arranged uniformly along the circumferential direction of the pier. A plurality of buffer parts are fixedly arranged on the outer side surface of the RC column far away from the pier. The buffer part includes a flexible material fixedly arranged on the outer side surface of the RC column and a protective plate fixedly arranged on the outer side of the flexible material. A protective net is fixedly arranged inside the RC column.

2. The pier protection structure against debris flow multi-stage impact according to claim 1, characterized in that: The buffer part is fixedly connected to the outer side surface of the RC column through a loosening prevention fastening mechanism.

3. The pier protection structure against debris flow multi-stage impact according to claim 2, characterized in that: The loosening prevention fastening mechanism includes a screw rod horizontally penetrating through the inside of the RC column and the buffer part, springs sleeved at both ends of the screw rod, and self-locking nuts arranged at both ends of the springs for pressing the springs. The self-locking nuts are threadedly connected to the screw rod.

4. The pier protection structure against debris flow multi-stage impact according to claim 3, characterized in that: One end of the screw rod protrudes from the outer side surface of the buffer part.

5. The pier protection structure against debris flow multi-stage impact according to claim 3, characterized in that: The flexible material uses waste tires. The flat side wall of the waste tire is fixedly connected to the outer side surface of the RC column through a loosening prevention fastening mechanism. The protective plate uses a wooden board, and through holes for the screw rod to penetrate are arranged on the end surface of the wooden board.

Images