中文摘要：

为研究罕遇地震作用下单波与双波对多层钢框架结构弹塑性时程分析结果的影响,以唐山市某钢框架结构的学生公寓为原型,应用Abaqus有限元软件建立三维计算模型,对其在不同地震波作用下的结构响应进行了弹塑性时程分析。研究表明,在罕遇地震作用下,单向地震波下的柱底最大剪力是双波下的1.1倍;单向地震波下的底层柱最大轴力是双波下的1.1倍;双向地震波下柱底的最大弯矩值是单向地震波下的1.4倍;双向地震波作用下结构的最大层间位移角是单向地震波作用下的1.8倍;多层钢框架结构在罕遇地震作用下单向波和双向波的地震响应相差很大。与现有规范相比,在罕遇地震作用下,采用双波对结构进行地震作用下的弹塑性时程分析更为保守。

英文摘要：

To study the effect of single wave or double wave on the elasto-plastic time history analysis re- suits with rare earthquake action, a student apartment with steel frame structure in Tangshan is adopted as the prototype, and a three-dimensional calculation model is established using the finite element software （Abaqus） to analyze the elasto-plastic time history of structural response with different seismic waves. The results show that the maximum shear force at the column base with single seismic wave is 1.1 times of that with double seismic wave during the process of rare earthquake; the maximum axial force at the frame bottom column with single seismic wave is 1.1 times of that with double seismic wave; the maxi- mum bending moment value at the column base with double seismic wave is 1.4 times of that with single seismic wave ; and the structural inter-story drift with double seismic wave is 1.8 times of that with single seismic wave ; and there will be a great difference of the seismic response between the condition with sin- gle seismic wave and that with double one. Compared with the existing specifications, the elastic-plastic time history analysis on structure with double wave is more conservative for rare earthquake condition.