摘要
以RC框架-核心筒高层隔震结构为研究对象,基于《建筑抗震设计规范》(GB 50011—2010)和《建筑隔震设计标准》(GB/T 51408—2021)两种规范,研究了两种规范不同隔震设计方法对结构关键设计指标的影响,明确了《建筑隔震设计标准》(GB/T 51408—2021)隔震设计方法的设计控制指标,对比分析了两种规范设计的隔震结构的关键结构响应。研究结果表明,《建筑隔震设计标准》(GB/T 51408—2021)隔震设计方法的控制指标为层间位移角。对于相同的上部结构和隔震方案,与《建筑抗震设计规范》(GB 50011—2010)的隔震设计方法相比,采用《建筑隔震设计标准》(GB/T 51408—2021)隔震设计方法,底部剪力比由0.377减小到0.342,中震作用下最大层间位移角降低12.0%,大震作用下最大层间位移角降低8.5%。采用《建筑隔震设计标准》(GB/T 51408—2021)进行结构设计时,上部结构可以采用更柔的设计方案。
Taking the RC frame-core tube high-rise seismic isolation structure as the research object, based on the "Code for seismic design of buildings"(GB 50011—2010) and "Standards for seismic isolation design of buildings"(GB/T 51408—2021) these two codes, the influence of different seismic isolation design methods in two codes on the key design indicators of the structure were studied. The design control indicators of the seismic isolation design methods in "Standards for seismic isolation design of buildings"(GB/T 51408—2021) were clarified. The key structural response of the designed seismic isolation structure of the two codes were compared and analyzed. The research results show that the control index of the seismic isolation design method of "Standards for seismic isolation design of buildings"(GB/T 51408—2021) is the inter-story drift ratio. For the same superstructure and seismic isolation scheme, compared with the seismic isolation design method of "Code for seismic design of buildings"(GB 50011—2010), adopting the seismic isolation design method of "Standards for seismic isolation design of buildings"(GB/T 51408—2021), the base shear ratio decreased from 0.377 to 0.342, the maximum inter-story drift ratio decreased by 12.0% under moderate earthquake, and the maximum inter-story drift ratio decreased by 8.5% under large earthquake. When "Standards for seismic isolation design of buildings"(GB/T 51408—2021) is adopted for structural design, a more flexible design scheme can be adopted for the superstructure.
作者
刘立德
魏忠
付刊林
李爱群
曾德民
解琳琳
李亚飞
LIU Lide;WEI Zhong;FU Kanlin;LI Aiqun;ZENG Demin;XIE Linlin;LI Yafei(China IPPR International Engineering Co.,Ltd.,Beijing 100089,China;China Southwest Architectural Design and Research Institute Co.,Ltd.,Chengdu 610042,China;School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)
出处
《建筑结构》
CSCD
北大核心
2022年第5期88-92,共5页
Building Structure
关键词
高层隔震结构
框架-核心筒
陋震设计方法
底部剪力比
层间位移角
high-rise seismic isolation structure
frame-core tube
seismic isolation design method
base shear ratio
inter-story drift ratio
