Analysis’s Research Status of Reinforcement Technology of PP-Bands in Masonry Structures

Abstract

Reinforcement with polypropylene bands is a newly arisen seismic technique. it can effectively improve the ultimate shear and flexural capacity and seismic performance of the structure, sudden collapse of whole structure can also be avoided, so it is especially suitable for the seismic reinforcement of rural masonry structures. In recent years, it has been gradually applied in the reinforcement and restoration of masonry structures. Based on the latest development of research, the influence of reinforcement with polypropylene bands (pp-bands) on the shear, flexural and seismic behavior of masonry structure were systematically introduced. The influence of the main reinforcement parameters such as mesh size, grid layout direction, connection mode, connection strength and mortar layer on the reinforcement effect were summarized. Deficiency of the current research and the key problems that need to be solved were pointed out. Through the study on research status of reinforcement technology of pp-bands in masonry structures, references for further research on the strengthening technology of pp-bands and the seismic reinforcement of rural masonry buildings in China were given.