多遇地震作用下错层框架的非线性分析  

Nonlinear analysis of saggered floor frame under frequently occurred earthquakes

作　　者：邹翾[1] 张强[2,3] 周德源[2] 朱立猛[2] 

机构地区：[1]上海建桥学院,上海201319 [2]同济大学结构工程与防灾研究所,上海200092 [3]上海师范大学建筑工程学院,上海201418

出　　处：《陕西理工学院学报（自然科学版）》2008年第3期20-25,共6页Journal of Shananxi University of Technology:Natural Science Edition

基　　金：上海高校选拔培养优秀青年教师后备人选科研专项基金资助项目(AAYQ0715);上海师范大学科研基金资助项目(SK200746)

摘　　要：通过静力非线性分析,对10层钢筋混凝土错层框架在不同烈度地震作用下的抗震性能进行了研究,数值分析中采用了基于纤维模型有限单元柔度法。分析结果表明,抗震设防烈度越高,弹性和非线性情况下的层间位移角误差越大,建议高设防烈度的结构或者重要及布置复杂的结构对多遇地震作用下的变形值进行修正。对于结构抗震设防烈度为7度时,从计算结果看,由于设计的刚度较大,余量充足,没有明显的薄弱部位,因此1/550的层间位移角限值即使为非线性计算结果也完全可以满足。The seismic performance of 10-story staggered floor RC frame structure under frequently occurred earthquakes by nonlinear analysis was evaluated. The finite element flexibility method based on fiber model was adopted in simulation. The results showed that the seismic fortification intensity was higher, then en＇or of inner-story drift angles between elastic analysis and plastic analysis was even greater. So it is suggested that the displacements of each story for important structures, complicated structures and high fortification in- tensity structures under frequently occurred earthquakes must be revised. When the seismic fortification intensity was 7, because the stiffness of design was great, the allowance was enough, the frame had not obvious weakness, 1/550 as limit of inner-story drift angles was satisfied with results of nonlinear calculation.

关 键 词：非线性分析 错层框架 柔度法 

分 类 号：TU973.212[建筑科学—结构工程] O322[理学—一般力学与力学基础]