半刚性连接钢框架基于极限状态的抗震设计  

SEISMIC DESIGN OF STEEL STRUCTURES WITH SEMI-RIGID CONNECTION BASED ON ULTIMATE STATE

作　　者：朱延章 潘志宏[1] 

机构地区：[1]江苏科技大学土木工程与建筑学院,江苏镇江212003

出　　处：《钢结构》2016年第8期1-7,共7页Steel Construction

基　　金：江苏省科技计划社会发展项目(BE2014653);湖南省自然科学基金项目(11JJ5024);江苏科技大学研究生科技创新计划项目(YCX15s-22)

摘　　要：简述了CECS 260∶2009《端板式半刚性连接钢结构技术规程》中关于半刚性连接钢框架在水平地震作用下的设计流程,其主要以结构处于极限状态下承载力验算为主,为了更好地使验算内容与极限状态相适应,基于塑性设计的研究成果,提出改进的半刚性连接钢框架抗震设计方法:基于极限状态的抗震设计方法。通过提出的侧移承载力修正系数计算结构极限状态下的基底剪力,确定结构极限状态下地震作用沿层高的分布,最后对半刚性连接节点以及梁柱进行设计。采用此方法对1榀6层半刚性连接钢框架结构进行设计,然后采用动力时程分析方法验证了该方法的可行性。This paper presented the seismic design flow of structures with semi-rigid connection in the Technical Specification for Steel Structures with End-Plate Semi-Rigid Connection（ CECS 260 ∶ 2009）. The design process mainly accounted for capacity checking based on ultimate state. In order to make capacity checking in specification correspond with the ultimate state better. A more reasonable seismic design method of steel structures with semi-rigid connection was proposed based on the research results of plastic design. The base shear was calculated according to the modified coefficient of lateral bearing capacity. Determining the seismic action along the story height,so as to conduct the design of the semirigid connections,beams and columns. The proposed method was applied to a six-story structure and validated by dynamic time history analysis.

关 键 词：半刚性连接 塑性设计 极限状态 

分 类 号：TU391[建筑科学—结构工程]