Method for reinforcing concrete pier through combination of corrugated steel pipes and fiber reinforced powder concrete

Abstract

A method for reinforcing a concrete pier through combination of corrugated steel pipes and fiber reinforced powder concrete comprises the following steps of (1) carrying out grinding and rough chiseling on the surface of a concrete pier reinforcing area; (2) determining the steel bar embedding positions on the surface of the concrete pier reinforcing area, and embedding transverse structure bars through drilling, hole clearing and gluing; (3) arranging the corrugated steel pipes embedded in a bearing platform on the outer side of the concrete pier reinforcing area; and (4) pouring the fiber reinforced powder concrete wrapping the transverse structure bars between the corrugated steel pipes and the concrete pier. By means of the method, not only can the bearing capacity and the shock resistance of the original concrete pier be improved, but also the method has the advantages that the number of construction procedures is small, the construction speed is high, and combination between new and old concrete materials is good.

Description

technical field [0001] The invention belongs to the technical field of engineering reinforcement. The invention relates to a reinforcement method for a concrete bridge pier. Background technique [0002] As an important part of the bridge structure, the bridge pier not only bears the load from the superstructure, but also transmits the load and its own weight to the foundation through the foundation, so its structural safety is very important. However, due to unreasonable early design specifications, changes in structural use functions, construction defects, and damage and aging during long-term use, a large number of existing bridges have many problems that affect their safety and use functions, such as poor seismic resistance of bridge piers, insufficient bearing capacity, etc. universal. Therefore, the reinforcement and repair of concrete bridge piers has been paid more and more attention by people. [0003] At present, the commonly used reinforcement methods of reinfo...

AI Technical Summary

Problems solved by technology

Among them, the enlarged section method will easily lead to additional reinforcement of the original structure foundation due to the large increase in the self-weight of the structure after reinforcement, and the increase in section will reduce the ductility of the original structure to a certain extent; the outsourcing steel reinforcement method will increase the size of the original structure. small, but the lateral restraint of the reinforced concrete is low, and the corrosion resistance of the outsourcing steel is poor; The uneven distribution of the restraining force weakens the reinforcement effect to a certain extent

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