直接基于位移的钢框架结构抗震设计  

Direct displacement-based seismic design for steel frame structures

作　　者：梁炯丰[1,2] 王俭宝[1] 顾连胜[1] 谢胜军[1] 

机构地区：[1]东华理工大学建筑工程学院,江西南昌330013 [2]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《四川建筑科学研究》2013年第3期148-151,共4页Sichuan Building Science

基　　金：国家自然科学基金资助项目(50868006)

摘　　要：结合我国建筑结构抗震设计实际,将钢框架结构性能划分为正常使用、生命安全和防止倒塌三个水平,并用层间位移角限值予以量化;以框架侧移曲线为基础,将多自由度体系转化为等效单自由度体系,导出了相应等效参数,并根据其性能水平确定出结构的目标位移。在此基础上,对五层两跨平面钢框架进行了基于位移的抗震设计,分析表明:本文指出的直接基于位移的抗震设计方法简便高效、结果精确,能够控制结构在不同性能水准下地震作用的性能。According to the characteristics of seismic design of building structures in China,steel frames＇ seismic perfermance is divided into three levels ： service-ability, life-safety and collapse-protection. Based on the displacement shape of the steel frames, the multi- degree-of-freedom system is transformed into an effective single-degree-of-freedom system, and the corresponding equivalent parameters are derived. The target displacement is detemined according to the corresponding perfermance level. The 5 floors and 2 strides plane steel frames are designed with direct displacement-based seismic design. The analysis of case study shows that the direct displacement- based seismic method is simt）le.effective and conld control the seismic performance of the structure in different intensity earthquakes.

关 键 词：直接基于位移 抗震设计 钢框架 

分 类 号：TU375[建筑科学—结构工程]