考虑非结构因素的高层结构-地基土相互作用非线性地震反应分析

项目名称： 考虑非结构因素的高层结构-地基土相互作用非线性地震反应分析

项目编号： No.51478312

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 建筑科学

项目作者： 姜忻良

作者单位： 天津大学

项目金额： 83万元

中文摘要： 本项目进行设备-高层（高耸）结构-地基土相互作用地震反应研究。提出设备-高层（高耸）结构-地基土相互作用动力分析模型，针对结构的非结构性破坏问题，将结构内部关键设备作为独立的二级子结构参与模拟，同时细化设备与结构连接，建立基于模态综合法原理的设备-结构-土高效分析模型。由于传统的动态子结构方法仅能解决线性问题，本项目在混合动态子结构法的基础上对其方法进行扩展，以解决考虑设备-结构-地基土相互作用后的非线性问题，采用约束模态与其它模态法的耦合方法，研究设备-高层（高耸）结构-地基土相互作用体系在不同地震作用下，不同设备与不同结构工况下，以及工况变化引起整个系统地震反应的变化，分析结构与设备抗震性能变化规律；并结合结构的抗震等级与设备的重要性、易损性，协调结构与设备的抗震性能，对结构与设备抗震性能进行综合性评价，为完善相关抗震设计标准建立提供参考。

中文关键词： 设备-高层结构-地基土；相互作用；非线性分析；非结构因素；地震反应

英文摘要： The project main studies earthquake response analysis of equipment- high-rise structure-soil interaction system. Considering the damage of nonstructural systems, a new model of dynamic analysis for equipment- high-rise structure-soil interaction system is proposed. The accurate analysis model of equipment-structure-soil interaction system is based on component mode synthesis method, and the equipment that involved simulates as secondary substructure, where interface conditions of equipment-structure are refined as different connection modes. Due to usual dynamic substructure method used to linear problems, in order to introduce the non-linear effect of equipment- high-rise structure-soil interaction system, the project develops the mixed dynamic substructure method, which combines constrained mode method and other mode methods. The proposed model is performed dynamic response analysis, including various input motions and dynamic properties of equipment or structure. Then, a comprehensive seismic assessment of equipment and structure combined seismic performance level of structural system and poor performance of equipment is develop that is consistent with the current performance-based seismic design philosophy, and it also offers some helpful reference for the current seismic design code.

英文关键词： equipment- high-rise structure-soil;interaction system;nonlinear analysis;non structural factors;earthquake response