高层结构基于稳定极限状态的整体抗震可靠度分析及应用  

Global seismic reliability analysis and application of stability limit state of high⁃rise structure

作　　者：马炎青 李祚华 陈朝骏 滕军 MA Yanqing;LI Zuohua;CHEN Chaojun;TENG Jun(Shenzhen Capol International&Associates Co.,Ltd,Shenzhen 518045,China;Harbin Institute of Technology(Shenzhen),Shenzhen 518055,China;Shenzhen Zhonggu Construction Group Co.,Ltd,Shenzhen 518010,China)

机构地区：[1]深圳市华阳国际工程设计股份有限公司,深圳518045 [2]哈尔滨工业大学(深圳),深圳518055 [3]深圳中固建筑集团有限公司,深圳518010

出　　处：《建筑结构》2024年第20期43-47,共5页Building Structure

摘　　要：对于高层建筑结构,重力二阶效应对结构稳定性的不利影响显著。建立了基于等效刚重比退化率的整体稳定能力极限状态方程,提出了基于随机响应面法的整体抗震可靠度分析方法。以框架-核心筒结构为例进行整体稳定能力极限状态抗震可靠度分析,并与当前设计规范相适应的变形能力抗震可靠度分析结果进行对比。结果表明:整体稳定能力抗震可靠度指标可以有效地评估结构的抗震可靠性,与变形能力抗震可靠度指标具有较好的一致性。考虑材料强度和地震作用随机性,提出的方法可应用于高层建筑设计结构方案比选、既有高层结构的可靠性鉴定分析以及对加固方案有效性的评估。The gravity second-order effect of high-rise structures has significant impact on its stability.A global limit state equation of stability based on the equivalent stiffness-to-weight ratio degradation rate was set up,global seismic reliability analysis method based on stochastic response surface method was proposed.Taking the frame-core tube structure as an example,the seismic reliability analysis of the limit state of the overall stability capacity was carried out,and the results were compared with the seismic reliability analysis results of the deformation capacity adapted to the current design specifications.The results show that the global seismic reliability index of stability capacity can effectively evaluate the structural seismic reliability,and has good consistency with the seismic reliability index of deformation capacity.Considering the randomness of material strength and earthquake action,the proposed method can be applied to the comparison of structural design schemes for high-rise structures,the reliability assessment of existing high-rise structures,and the evaluation of the effectiveness of retrofitting schemes.

关 键 词：高层结构 抗震可靠度 稳定能力极限状态 等效刚重比退化率 变形能力极限状态 随机响应面法 

分 类 号：TU311[建筑科学—结构工程]