摘要
针对目前消能子结构设计存在的问题,提出消能子结构节点弹性系数设计方法(即消能子结构节点弹性系数法),用弹性分析下的力完成消能子结构节点的设计与验算,建立子结构节点核心区控制方程,以带防屈曲约束支撑(BRB)钢筋混凝土框架减震结构为例,给出子结构节点核心区控制方程中各参数的取值方法,采用YJK软件对某带BRB钢筋混凝土框架减震结构进行消能子结构的设计,并进行罕遇地震弹塑性时程分析,验证消能子结构节点弹性系数法的可行性和合理性,结果表明:(1)消能子结构节点弹性系数法是可行和合理的;(2)满足子结构节点核心区控制方程即可满足《建筑消能减震技术规程》JGJ297-2013对消能子结构节点要求;(3)子结构节点核心区控制方程中的参数取值方法是可行的;(4)将子结构按中震弹性设计的规定是片面的。
Considering the problem existing in current design of energy-dissipated substructure,the elastic coefficient design method of energy-dissipated substructure joint( i. e. elastic coefficient method of energy-dissipated substructure joint) is proposed,and control equation of the substructure joint core area is built.This method uses force under elastic analysis to complete the design and verification of the ultimate bearing capacity of substructure joint.Taking the reinforced concrete frame equipped with BRB as an example the value of the parameter of control equation is introduced. The energy-dissipated substructure is designed and elastic-plastic dynamic time history analysis under severe earthquake excitation is performed by software YJK to confirm the feasibility and rationality of elastic coefficient method of energy-dissipated substructure joint.The analysis results show that:( 1) the elastic coefficient method of energydissipated substructure joint is feasible and reasonable;( 2) if substructure joint can meet the control equation of the substructure joint core area,it means that the requirements of"Technical specification for seismic energy dissipation of buildings( JGJ 297-2013)"can be met;( 3) the determination of parameter in control equation of the substructure joint core area is feasible;( 4) the provision for the substructure to be elastically designed under moderate earthquake is one-sided.
作者
周云
王贤鹏
陈清祥
高冉
Zhou Yun;Wang Xian-peng;Chen Qing-xiang;Gao Ran(School of Civil Engineering, Guangzhou University, Guangzhou 510006,China;Shanghai Xuehui Anti-Earthquake Technology Consulting Co.Ltd,Shanghai 200086,China)
出处
《工程抗震与加固改造》
北大核心
2019年第4期1-13,共13页
Earthquake Resistant Engineering and Retrofitting
基金
长江学者和创新团队发展计划项目(IRT13057)
关键词
消能子结构
节点
设计方法
钢筋混凝土框架
防屈曲约束支撑
energy-dissipated substructure
joint
design method
reinforced concrete frame
buckling-restrained brace
