摘要
本文研究了软化负刚度恢复力模型对砌块结构在强震作用下的破损反应影响,讨论了由于软化负刚度效应引起的结构系统不稳定反应的一些理论和数值计算上的问题。文中还以一座七层配筋粉煤灰砌块结构模型在模拟地震作用下的反应为例,进行了理论计算结果和振动台试验结果的比较。结果表明,本文的计算模型能够较好地模拟砌块结构在强震作用下的破损反应。
In this paper,the influence of the restoring force mode with negative stiffness as-sociated with the softness on damage earthquake response of the masonry buildingsto strong earthquake has been studied.A series of problems of the unstable responseof the structure system in respects of the theory and numerical calculation are dis-cussed,which are induced by the softness effects.The comparison between the re-sults obtained by elasto-plastic dynamic analysis and the shaking table test of aseven-story masonry building with coal-slag-gas-concrete blocks is given for il-lustration.It shows that the calculation model proposed in the paper can simulatewell the damage earthquake response of the masonry buildings to strongearthquake.
基金
地震科学联合基金
关键词
砌块
结构
地震
破损反应
计算
the negative stiffness model
motion stability
