High-strength stainless steel stranded wire net reinforced ECC pre-tightening force tensioning reinforcing component and construction method thereof

Abstract

The invention relates to the technical field of civil engineering, in particular to a high-strength stainless steel stranded wire net reinforced ECC pretightening force tensioning reinforcing member and a construction method thereof.The reinforcing member comprises an original concrete member and an ECC reinforcing layer which is arranged outside the original concrete member and comprises a high-strength stainless steel stranded wire net; the high-strength stainless steel stranded wire net is formed by fixing a plurality of longitudinal high-strength stainless steel stranded wires and transverse high-strength stainless steel stranded wires in a crossed manner; the reinforcing member further comprises a distance control device, a pre-tightening force control device and anchoring devices located at the two ends of an original concrete member. The method is simple and convenient to construct and easy to operate, the steel strands can be stressed in advance by applying pre-tightening force, crack development is effectively inhibited, the rigidity after reinforcement is improved and the like, and the situation that the mechanical property of the high-strength stainless steel strands cannot be brought into full play due to looseness during reinforcement is effectively avoided. And the distance between the steel strand and the original component can be accurately controlled, so that the mechanical property of the reinforcing material is fully exerted, and an ideal reinforcing effect is achieved.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a high-strength stainless steel stranded wire mesh reinforced ECC pre-tensioned tensioning and reinforcing member and a construction method thereof, which are used for reinforcing concrete structures such as columns and beams. Background technique [0002] With the rapid development of my country's economy, my country's construction industry has entered a development period focusing on modernization and maintenance and reinforcement. The existing reinforcement technologies mainly include: steel wire rope reinforcement, prestressed steel strand net-polymer mortar reinforcement and FRP enhances ECC hardening, etc. However, the existing reinforcement technology has more or less certain shortcomings. For example, due to the lack of prestress in the reinforcement of the steel wire rope, the mechanical properties of the steel wire rope cannot be fully exerted due to the relaxa...

AI Technical Summary

Problems solved by technology

However, the existing reinforcement technology has more or less certain shortcomings. For example, due to the lack of prestress in the reinforcement of steel wire ropes, the mechanical properties cannot be fully exerted due to the relaxation of the wire ropes during reinforcement. Due to the low tensile strength of the polymer mortar, it does not participate in the direct force, and does not improve the mechanical properties of the reinforced column

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