大底盘层间隔震结构一体化设计方法研究  

Research on integrated design method of large base inter-story isolation structure

作　　者：杨奎 谭平[1] 陈华霆 李晓磊 YANG Kui;TAN Ping;CHEN Hua-ting;LI Xiao-lei(Guangdong Provincial Key Laboratory of Earthquake Engineering and Advanced Technology/Ministry of Education Key Laboratory of Earthquake Resistance Earthquake Mitigation and Structural Safety,Guangzhou University,Guangzhou 510405,China)

机构地区：[1]广州大学广东省地震工程与应用技术重点实验室/工程抗震减震与结构安全教育部重点实验室,广东广州510405

出　　处：《广州大学学报（自然科学版）》2020年第6期77-86,共10页Journal of Guangzhou University:Natural Science Edition

基　　金：国家重点研发计划资助项目(2017YFC0703600);国家自然科学基金资助项目(51808154,51978185);广东省基础与应用基础研究基金资助项目(2020A1515011269);教育部创新团队研究发展计划资助项目(IRT13057)。

摘　　要：在现行层间隔震分部设计法中,隔震层对上部子结构和下部子结构的边界影响并未充分考虑,从而导致上、下子结构的地震作用分布与真实情况存在较大差异,不利于在实际工程中应用.本文基于等效线性化思想、复模态理论和复振型完全平方组合准则(CCQC),针对层间隔震结构介绍了能考虑结构非比例阻尼特性和支座非线性的一体化设计方法.此外,将该一体化设计方法与分部设计方法进行了差异性分析.文末以非线性时程分析结果为精确解,对比分析了基于完全平方组合(CQC)和复振型完全平方组合(CCQC)组合准则的一体化设计方法.研究结果表明,相比于传统的层间隔震结构分部设计法,本文提出的一体化设计方法设计流程更加简洁、地震作用分布更趋合理,并能够更精确估计地震楼层剪力和构件内力等,确保层间隔震结构设计的合理性和结构安全性.In the partition design method for inter-story isolation structurs,the influence of isolation layer on the boundary of upper substructure and lower substructure is not fully considered,which leads to great difference between the seismic action distribution of upper and lower substructure and the real situation,which is not suitable for the practical engineering application.Based on the idea of equivalent linearization,the theory of complex modality and the Complex Complete Quadratic Combination(CCQC),this paper puts forward an integrated design method for inter-story isolation structures that can consider the non-proportional damping characteristics and the nonlinearity of the isolators,and makes a comparation with the divisional design.Based on the average value of nonlinear time history analysis on 30 artificial waves,this paper analyzes the seismic response of inter-story isolated structures based on the combination criterion of Complete Quadratic Combination(CQC)and Complex Complete Quadratic Combination(CCQC).The results show that compared with the traditional method for inter-story seismic isolated structure division design,the integrated design method proposed in this paper has a more concise design process and a more reasonable distribution of seismic effects,and can estimate the shear force and internal component force of seismic floor more accurately,so as to ensure the rationality and structural safety of the design for inter-story isolated structure.

关 键 词：层间隔震结构 反应谱方法 非比例阻尼 复振型完全平方组合 复模态 

分 类 号：TU352[建筑科学—结构工程]