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以村镇砌体结构房屋中砂浆强度偏低的砖墙为研究对象,提出了一种全新的抗震加固方法:角钢和打包带加固法,并通过低周往复荷载试验,对加固后墙体和原墙在水平力作用下的承载力和变形性能进行了对比分析和研究,从墙体的破坏形态、承载力、变形、滞回特性和耗能性能等多方面进行了抗震性能分析。结果表明,采用本文提出的加固方法可明显提高墙体的抗震性能,尤其是墙体的延性由于打包带的约束作用得到大幅提高。本文的加固方法施工简单、经济高效,有利于在广大农村地区推广应用。
Taking the brick wall with low mortar strength in the masonry structure houses as the research object, a new seismic strengthening method is proposed: the angle steel and the packing belt reinforcement method, and through the low cycle reciprocating load test, The bearing capacity and deformation performance of the wall under horizontal force are compared and studied. The seismic performance of the wall is analyzed from the aspects of failure mode, bearing capacity, deformation, hysteresis and energy dissipation performance. The results show that the method proposed in this paper can significantly improve the seismic performance of the wall, especially the ductility of the wall due to the restraint effect of the packing tape has been greatly improved. The reinforcement method in this paper has the advantages of simple construction and high economic efficiency, which is beneficial to popularization and application in the vast rural areas.