Multi-point anchoring sectional reinforcement construction method for prestressed carbon fiber plate of variable cross-section beam

Abstract

The invention relates to a multi-point anchoring sectional reinforcement construction method for a prestressed carbon fiber plate of a variable cross-section beam. The method is characterized by comprising the following construction steps of 1) cutting the bottom of the variable cross-section beam to form a groove; 2) installing a fixed end base, a tension anchoring device and a middle clamping base; 3) paving the carbon fiber plate in the groove; 4) locking the right end of the carbon fiber plate by the fixed end base, and locking the left end of the carbon fiber plate by the tension anchoring device; 5) tensioning the carbon fiber plate with the tensioning anchoring device, and locking the middle part of the carbon fiber plate with the middle clamping base after tensioning; and 6) filling and laying an apparent layer. According to the construction method, an upward convex curve is divided into a plurality of sections of straight lines through the middle clamping base, so that the problem that an upward convex bottom plate in the middle of the variable cross-section beam cannot carry out prestress tensioning is solved, one-time tensioning and multi-point anchoring is realized, andthe tensioning construction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of bridge reinforcement, and is suitable for reinforcing constructions such as reinforcing and repairing damage with prestressed carbon fiber plates on the upper convex bottom plate of variable-section beams, and is especially suitable for multi-point anchoring and segmented reinforcement construction of prestressed carbon fiber plates for variable-section beams method. Background technique [0002] Due to many reasons such as increased standards, improper design and construction, increased load, material aging, environmental corrosion, and changes in use functions, many bridges are faced with either demolition, reconstruction or reinforcement. Demolition and reconstruction are time-consuming, labor-intensive and resource-intensive. Reinforcement is green. , environmental protection, energy saving, and sustainable development, prestressed carbon fiber panels are widely used in bridge reinforcement projects a...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of difficulty in strengthening the prestressed carbon fiber plate of the curved bridge of the variable cross-section beam, and propose a multi-point anchorage segmental reinforcement construction method of the prestressed carbon fiber plate of the variable cross-section beam

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