Reinforcement method of TRC for improving anti-seismic performance of multi-piece brick masonry wall

Abstract

The invention discloses a reinforcement method of TRC for improving an anti-seismic performance of multi-piece brick masonry wall, and belongs to the technical field of repair, reinforcement and construction of masonry walls. The reinforcement method comprises the steps that a plurality of penetrating circular holes are drilled in the wall to be reinforced, and fiber reinforced plastic (FRP) rib anchor rods are used for penetrating through the circular holes; the surface of the wall to be reinforced is coated with high-performance concrete, a fiber woven net is impregnated with epoxy resin, and the surface of the fiber woven net is coated with the high-performance concrete again; If one layer of fiber woven net can not meet the requirement of wall anti-seismic performance improvement, twoor more layers of fiber woven nets can be laid; and wet water curing is carried out until the high-performance concrete age is reached. According to the reinforcement method of TRC for improving the anti-seismic performance of the multi-piece brick masonry wall, in-plane shear resistance and out-of-plane bending resistance of the multi-piece brick masonry wall are improved, the risk of serious damage or even collapse of a masonry structure in earthquake is reduced, the inadaptability of a masonry material caused by the use of the epoxy resin in FRP reinforcement is avoided, deficiency of low reinforcement efficiency of engineered cementitious composite (ECC) reinforcement is effectively improved, and the integrity of multi-piece brick masonry wall is improved.

Description

technical field [0001] The invention relates to the technical field of repair, reinforcement and construction of masonry walls, in particular to a TRC reinforcement method for improving the seismic performance of multi-leaf brick masonry walls. technical background [0002] Brick masonry structures still occupy an important position in my country's industrial and civil buildings, and many brick masonry structures have high historical and cultural value. Masonry is a typical brittle material with high compressive strength and extremely low tensile and shear strength, and the masonry structure is made of blocks and mortar, resulting in poor integrity. to the most severe damage. Insufficient shear and flexural capacity of masonry walls is one of the main reasons for masonry structures to be seriously damaged or even collapsed in earthquakes. [0003] Reinforcement is the main way to improve the seismic performance of masonry walls. The main methods include reinforced concrete...

AI Technical Summary

Problems solved by technology

The disadvantage of ECC is that the chopped fibers in the matrix are distributed randomly and randomly, which makes the reinforcement efficiency of ECC reinforcement low, especially in the external bending reinforcement of masonry walls.

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