中国抗震规范中R-μ关系探析

Chinese Code for Seismic Design & R-μ Relations

抗震设计思路要赋予结构以必要的非弹性变形的能力,使结构能够承受一定能量区间地震的作用。中国抗震设计规范采用多遇地震作为建筑结构截面设计的依据,考虑各类结构的延性,对不同的结构取相同影响系数C,一定程度上忽视R-μ基本准则。

The seismic design is no longer the original structural design idea of guaranteeing load bearing capacity,but to give the necessary capacity of inelastic deformation to structure so that it can bear the enough impacting of earthquakes.The design basis of building structural cross section is frequently-occurred earthquake action in Chinese code for seismic design.Considering the ductility for structure and using the same coefficient C in different structure,it ignores the R-μ principle.