Building anti-continuous collapse reinforcement system and method based on frp fabric

Abstract

The invention discloses a building continuous-collapse-resistant reinforcing system based on FRP cloth materials. The reinforcing system comprises two first anchoring steel plates symmetrically arranged at two side surfaces of a to-be-reinforced column, two second anchoring steel plates symmetrically arranged at the other two side surfaces of the to-be-reinforced column, and the FRP cloth materials pasted on the surface of a to-be-reinforced beam, the two first anchoring steel plates are both provided with first anchor clamping piece grooves, the two second anchoring steel plates are both provided with second anchor clamping piece grooves, the adjacent first anchoring steel plates and the second anchoring steel plates are fixedly connected via bolts, one end of each piece of the FRP cloth materials are fixedly connected with anchor clamping pieces, and the anchor clamping pieces are fixedly connected in the first anchor clamping piece grooves or the second anchor clamping piece grooves. The invention also discloses a building continuous-collapse-resistant reinforcing method based on the FPR cloth materials. According to the reinforcing system and the method, the construction is convenient, the carrying capacity and the ductility of the original to-be-reinforced beam and the to-be-reinforced column are improved, to-be-reinforced buildings are not damaged, and the integrity and the continuous-collapse-resistant ability of the buildings are improved.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a building anti-continuous collapse reinforcement system and method based on FRP cloth. Background technique [0002] With the improvement of our country's economic level, the reinforcement technology of reinforced concrete buildings has also made great progress. At present, my country's structural reinforcement and transformation industry has become one of the main industries in the field of civil engineering. Buildings are often at risk of progressive collapse due to changes in building use, earthquake damage, impact and blast damage. Currently commonly used reinforcement technologies include: reinforced high-performance mortar reinforcement, bonded steel reinforcement, FRP reinforcement, enlarged cross-section reinforcement, etc., but the reinforcement goals are generally limited to improving the bending and shear bearing capacity of beams; compr...

AI Technical Summary

Problems solved by technology

However, this reinforcement technology also has the following disadvantages: this method needs to fix the stress tendons through expansion bolts, shear pins, etc., and provide shear bond strength, the construction is more troublesome and causes some damage to the original structure; the reinforcement layer and the original structure Bonding and peeling failure occurs in the transaction between the two, and the strength of the reinforcement material is not easy to be fully utilized; it is difficult to meet the requirements of high rigidity and ductility of the structure

However, this method requires a large amount of on-site wet work and a long curing time. The thickened part increases the self-weight and dead-load bending moment of the structure. The bearing capacity is limited by the original concrete strength in the compression zone, and affects the structural headroom. The usable space of the original structure has a great influence. At the same time, if the steel bars are to be continuous, the penetration damage to the original structure cannot be avoided, making it unsuitable for continuous collapse resistance reinforcement.

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