A repair anti-scouring structure and construction method based on tire strip pier

Abstract

The invention proposes a repair anti-scouring structure and construction method based on tire strip pier, which is used to solve the problem of how to improve the ability to resist the impact and abrasion of stones in floods during the reinforcement process of damaged pier in the ditch, and at the same time realize the rapid recovery of pier after reinforcement during the flood period. Detection technical problems. The anti-scouring structure includes an anti-scouring piece sleeved on the lower part of the pile body. The anti-scouring piece is in order from the inside to the outside: a carbon fiber cloth detection layer, a cement mortar protection layer and a tire strip braided layer; the carbon fiber cloth detection layer is set on the At the lower part of the pile body, a cement mortar protective layer is arranged outside the carbon fiber cloth detection layer, and a tire strip braided layer is arranged outside the cement mortar protective layer. The invention uses the braided layer of waste tire strips to improve the anti-scouring performance of the pier, and the carbon fiber cloth enhances the bending rigidity of the pier while using the electrical conductivity of the carbon fiber cloth to detect the damage of the reinforced pier. The whole structure is convenient and practical, with low cost and high durability.

Description

technical field [0001] The invention is used in the technical field of bridge pier damage repair engineering, and relates to an anti-scouring and reinforcement structure of bridge piers in river courses or streams, in particular to a tire strip-based bridge pier repair anti-scouring structure and a construction method. Background technique [0002] The existing anti-scour structure of the bridge pier is mainly to increase the cross-sectional area of ​​the bridge pier or add a special anti-scour structure around the bridge pier to resist the erosion of river sand and stones. The main measures include: steel-clad method, concrete reinforcement method, Binger structure Protection, anti-collision piers, etc., these methods can improve the safety of bridge piers to a certain extent, but the main problems are as follows: 1. The whole restoration construction process is cumbersome, difficult to operate, and the construction period is long; This leads to an increase in the size of t...

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Problems solved by technology

[0002] The existing anti-scour structure of the bridge pier is mainly to increase the cross-sectional area of ​​the bridge pier or add a special anti-scour structure around the bridge pier to resist the erosion of river sand and stones. The main measures include: steel-clad method, concrete reinforcement method, Binger structure Protection, anti-collision piers, etc., these methods can improve the safety of bridge piers to a certain extent, but the main problems are as follows: 1. The whole restoration construction process is cumbersome, difficult to operate, and the construction period is long; This leads to an increase in the size of the bridge piers, reducing the area of ​​the river cross-section, increasing the flow velocity at the bridge piers, and causing greater erosion; 3. High cost, resulting in a large cost investment and waste of resources; 4. In rivers and ditches After the damaged pier is reinforced, it is usually in an underwater environment during the relatively dangerous flood period, and it is impossible to detect whether the pier is intact; 5. The reinforcement uses rigid expanded concrete materials, which are easily broken under the impact of rocks in the flood, and the durability cannot be guaranteed; 6. The shape of the reinforced pier is peculiar, the volume is incompatible with the upper structure of the bridge, and it is not beautiful enough; 7. The steel clad method or the Binger structure is used to protect the exposed steel, which is easy to rust under the dry and wet cycle load of the river and will cause environmental pollution

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