Reinforcement of building beams by adhesive steel plate

Project Overview

This project is located in Pixian, Chengdu City, which is a 31 storey building on the ground with two storey basement. The reinforced concrete shear wall structure is used. The type of seismic fortification of the construction is class C, the safety grade of the building structure is grade two; the foundation design grade is grade A; the frame and shear wall are grade two, in normal use Under this condition, the design life of the building structure is 50 years.

The three layer and 21 axis of 5# commercial and residential building cross the L axis KL22, with a net span of 4.4 meters, high 750mm and wide 450mm. Because of the hydraulic drilling, the steel bar in the lower part of the beam is completely broken at the distance from the support seat 7cm. A total of 3D20. has the support counterforce in the frame beam at the base of the frame, and the beam is mainly on the upper part of the beam. So the reinforcement of the beam is reinforced by the adhesive bonded steel plate reinforcement method.

Structural strengthening system

• Q235b steel plate

• steel plate adhesive

• anchoring adhesive

• M8 anchor bolt

so the width of the steel plate:250mm; the thickness of the steel plate is 6mm.