用PKPM对面层或板墙加固后砌体结构的抗震计算

PKPM-based Calculations of Masonry Strengthening with Concrete Splity

水泥砂浆面层、钢筋网砂浆面层或现浇钢筋混凝土板墙是常用的砌体墙加固方法。目前加固结构的抗震计算主要依靠手算。着重讨论如何利用PKPM系列中的PMCAD进行板墙加固结构抗震计算。为适应软件的输入限制,遵循墙体刚度和质量等效的原则计算等效墙体的各项输入参数。并提出用抗剪承载力提高系数和竖向承载力提高系数对计算结果进行修正,以检查墙体是否满足承载力要求。

The plaster or concrete splity is the common method of strengthening low strength brick walls.But the seismic calculation of strengthened masonry largely relies on the manpower.The possibility of performing the seismic calculation for strengthened masonry is discussed using the PMCAD module developed in the PKPM.In order to suit the PKPM-styled input options,an equivalent conversion method is developed to ensure the stiffness and mass of equivalent walls unchanged with respect to the original composite walls.The modification factors of shear strength and vertical strength of equivalent walls is specified.