基于M—θ分量杆模型的拟静力分析

Pseudo-static Analysis to the Single-component Model Based on Moment-rotation Relation

对钢筋混凝土结构在低周反复荷载下的受力全过程进行了模拟分析,得出荷载—位移滞回曲线和结构骨架曲线。拟静力分析程序设计基于弯矩—转角(M—θ)的单分量杆模型,其刚度采用退化三线型恢复力模型。在此基础上用Matlab语言编制了一榀框架结构的分析程序,计算值与试验结果吻合较好。程序的计算方法简便可靠,可以用来分析结构的弹塑性性能。

The load-displacement hysteretic curve and skeleton curve were acquired by full-range analysis of reinforced concrete structures under low reversed cyclic loading. In pseudo-static anal- ysis program, the tri-linear restoring force model with consideration of rigidity degradation was a- dopted based on the moment-rotation relation. Calculations are in good agreement with experi- mental results by frame structure analysis program established with the Matlab language. The calculation method of the program is convenient and reliable, and can be applied to analyze the e- lastie-plastic performance of different structures.