System and method for reinforcing masonry structure by using cross wall and flat steel draw bar

Abstract

The invention relates to a system and a method for reinforcing a masonry structure by using a cross wall and flat steel draw bars, and belongs to the field of seismic resistant reinforcement. An upper floor plate of the cross wall or the lower side of a roof board (close to the wall surface) is horizontally provided with the flat steel draw bars; two ends of the flat steel draw bars are respectively provided with flat steel supports; and the flat steel supports at two ends are respectively arranged in open slots at two ends of the cross wall, and are symmetrically pulled and combined through tension bolts. According to the structure system and the method thereof provided by the invention, the flat steel draw bars are utilized for replacing the steel draw bars in the conventional binding-type reinforcing method, flat steel is laid close to the walls and are protected by stainless mortar, and the defect that the steel draw bars are easy to rust is overcome; especially prestress tension is applied to the flat steel, so that the cooperative operation of the flat steel draw bars and a wall body is ensured, and the stress hysteresis phenomenon is reduced; and the flat steel draw bars have greater tension force than that of steel draw bars, so that the seismic resistant reinforcement effect is played relatively effectively.

Description

technical field [0001] The invention relates to a masonry structure system reinforced by horizontal walls and flat steel tie rods and a reinforcement method thereof, belonging to the field of seismic reinforcement. Background technique [0002] After the Tangshan earthquake in 1976, the masonry structure was comprehensively reinforced by the method of adding steel tie rods to the horizontal wall, commonly known as the bundled reinforcement method. After many earthquake tests, it is proved that this reinforcement method is very effective in preventing the structure from collapsing. It significantly increases the structural ductility, thereby avoiding the sudden collapse of the structure and increasing the safety and reliability of the building. At present, the comprehensive utilization and transformation of old houses is being carried out, among which seismic reinforcement is one of the important contents. More than 90% of the old residential buildings in our country are br...

AI Technical Summary

Problems solved by technology

However, this method also has certain defects: under the premise of meeting the earthquake resistance requirements, there are still steel tie rods inside the house, which affects the appearance, and some are cut off in the subsequent residential decoration, which seriously affects the safety of residential use.

Furthermore, steel tie rods are prone to rust in humid climates, and frequent maintenance is required, which brings inconvenience to residential use.

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