Quasi-static test of masonry wall reinforced by wire rope-polymer mortar surface layer vertical-cross strip
The preliminary tests of the research group show that the wire rope-polymer mortar surface layer cross strip can improve the shear capacity of the masonry wall,but the effect of restraining the bending and shear failure of the masonry wall is not ideal,especially for the wall with a height to width ratio more than 1.5.In order to further study the influence of strip reinforcement method on seismic performance of reinforced masonry structures,one unreinforced wall,two cross strip reinforced walls and two vertical-cross strip reinforced walls were designed,and the quasi-static tests were carried out.The test results show that the cross strip is helpful to increase the load of the wall at each stage,but the restraining effect on the bending and shear failure of the high-narrow wall is not obvious.The vertical strip can significantly reduce the influence of macroscopic bending moment on the wall,especially on the high-narrow wall specimens.Compared with the high-narrow wall specimens without vertical strip,the load of the high-narrow wall specimens strengthened by vertical strip has been significantly improved at all stages,and the hysteresis curve of the specimen is more plump,and the energy dissipation capacity and ductility have been improved.The failure mechanism of the combined wall was analyzed.The calculation formula of the flexural and shear capacity of the combined wall was derived.The parameters of shear capacity formula of the combined wall were obtained by fitting the test data.
vertical stripcross stripreinforcement of masonry wallquasi-static testshear capacity
NETL
NSTL
万方数据
