延性交错桁架结构抗震性能及设计对策

项目名称： 延性交错桁架结构抗震性能及设计对策

项目编号： No.51208412

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 建筑环境与结构工程学科

项目作者： 冉红东

作者单位： 西安建筑科技大学

项目金额： 25万元

中文摘要： 针对交错桁架结构体系抗震性能差的科学问题，结合延性桁框架结构的研究成果，提出延性交错桁架结构的概念，采用试验研究和数值模拟相结合的方法，对延性交错桁架结构的抗震性能及抗震设计方法进行研究；通过低周反复加载试验研究延性交错桁架结构的抗震性能，探索延性交错桁架结构的破坏机理；通过有限元分析研究影响延性交错桁架结构体系抗震性能的因素，建立延性交错桁架结构静力及动力简化分析模型；基于试验及理论研究成果，提出该结构体系合理的构造措施及抗震设计方法。本项目对延性交错桁架结构体系抗震性能的探索及揭示该结构体系破坏机理具有重要的科学意义，为扩大交错桁架结构体系在我国的应用范围奠定理论基础，具有重要的工程应用价值。

中文关键词： 延性交错桁架钢框架；抗震性能；试验研究；延性区段；有限元分析

英文摘要： In order to solve the scientific problem about the poor seismic performance of staggered truss frame system, reference research results of the special truss frame structure, introduce the concept of special staggered truss structure, by means of theoretical analysis, experimental research and numerical simulation methods, seismic performance and seismic design criterion of special staggered truss frame system is studied;seismic behaivour of special staggered truss frame system are studied by cyclic loading test and vibrating table test and the collapse mechanism of the special staggered truss frame system are explorated; influncing factors about the seismic behaviors of special staggered truss frame system are studied by finite element analysis, and the static and dynamic reduced analysis model are established; based on the experimental and theoretical research results, proposed the reasonable structural system of the construction measures and aseismic design criterion. The project which explore the seismic performance of the special staggered truss system and reveal the structure seismic performance and failure mechanism has important scientific significance, for expansion the application of the staggered truss system in china lays a theoretical foundation, which has important application value in engineering.

英文关键词： special staggered truss frame structure；seismic behavior；experimental study；special segment；the finite element analysis