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一种基于位移的改进静力弹塑性分析方法

, PP. 18-23

Keywords: 静力弹塑性,位移控制,水平加载方式,Pushover分析,振型组合

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Abstract:

静力弹塑性分析作为一种新的结构抗震性能评估方法,近些年得到很大的推广。本文在已有的研究基础上,通过一种基于位移控制的多阶振型组合的静力推覆分析,采用自适应的水平加载方式,考虑高阶振型的影响。对一中等高度的结构进行推覆分析,结果表明,与采用不变的水平菏载分布形式的一般静力推覆分析比较,基于本文Pushover分析所得的结构响应与非线性动力时程分析所得结构的响应更为近似,尤其在受结构高阶振型影响较明显的结构层间位移角及层间剪力方面,其结果同动力时程分析所得更为接近。

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