Y形偏心支撑钢框架SAP2000非线性分析模型  

Nonlinear analysis model SAP2000 for eccentrically braced steel frames with Y-links

作　　者：杨文侠[1] 李春燕[2] 顾强[3] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]西安科技大学建筑与土木工程学院,陕西西安710054 [3]苏州科技学院土木工程学院,江苏苏州215011

出　　处：《兰州理工大学学报》2010年第6期111-114,共4页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(50578099;50978175)

摘　　要：为研究Y形偏心支撑钢框架结构的弹塑性性能,根据剪切耗能梁段恢复力特性和钢框架的力学性能,提出符合抗震规范的耗能梁段独立剪切铰参数的定义方法,建立Y形偏心支撑钢框架SAP2000非线性塑性铰分析模型.通过3个模型试件在循环荷载下的骨架曲线和有限元分析的PUSHOVER曲线的对比,论证模型的合理性.结果表明,本文提出的改进塑性铰模型能够较为合理地反映Y形偏心支撑钢框架结构的非线性性能.In order to investigate elastic-plastic performance of eccentrically braced steel frames,the definition method of independent shear-link parameter in energy dissipative beam segment consistent with National Anti-seismic standards was presented and an analysis model SAP2000 of nonlinear plastic links in eccentrically braced steel frames with Y-links was set up according to force-recovering characteristics of shear energy dissipative beam segment and mechanical performance of steel frames.The reasonability of this model was proved by means of comparison between the skeleton curve and PUSHOVER curve of finite element analysis of three model samples under cyclic load.The result showed that the improved model of plastic links presented in this paper could more reasonably reflect the nonlinear performance of the eccentrically braced steel framed construction with Y-links.

关 键 词：Y形偏心支撑钢框架 塑性铰 非线性 

分 类 号：TU313[建筑科学—结构工程] TU391