罕遇地震下RC低矮框架失效相关性拟动力试验分析

Pseudo-dynamic testing analysis on the failure correlation of low reinforced concrete frames under rare strong earthquakes

为研究罕遇地震下低矮结构的失效相关性问题,设计了两榀钢筋混凝土对称与非对称三跨二层框架结构模型,通过拟动力试验,对低矮框架结构在罕遇地震作用下柱截面各约束的失效特点和相关规律进行了统计与分析,以期为低矮结构在罕遇地震作用下的失效相关性理论提供试验支持,文中指出钢筋材性的相对均匀性是造成罕遇地震下大量截面约束同时失效的主要原因。

Be aimed at the failure correlation problems of the low frame structure reliability calculation,one symmetric and other asymmetric three-span-two-story frame models have been designed.And based on the pseudo-dynamic testing method,the failure characteristics and rules of the cross-sectional constraints of the frame models under rare strong earthquakes are analyzed.It is expected to provide the experiment supports for the structural dependent failure theory.Furthermore,the relative uniformity of the tensile strength of the steel is the major cause for constraint simultaneity failure under the rare strong earthquakes.