【作者】 徐国军；

【导师】 陈水福；

【作者基本信息】 浙江大学 ， 结构工程， 2006， 硕士

【摘要】 基于结构性能和目标位移的静力弹塑性分析方法具有概念清晰、简便实用等特点,已成为结构抗震设计和分析的重要方法。 本文采用静力弹塑性push-over分析方法对一复杂高层钢结构——杭州国际会议中心主体结构进行了推覆分析。首先对push-over分析方法的发展现状、应用背景、基本假定、理论基础和适用范围作了论述;在此基础上应用ETABS软件,考虑多种水平荷载分布方式对该结构进行了多遇和罕遇地震作用下的push-over分析,得到了结构底部剪力.顶点位移关系曲线、层间位移角等结果,据此对结构的抗震性能进行了多方面的评估。为了验证push-over分析的正确性和可靠性,又采用振型分解反应谱方法计算了结构在x、y方向的层间位移角、层间位移、各楼层位移、顶层最大位移等响应,并与push-over分析结果作了比较。最后采用弹塑性时程分析方法对简化的层模型结构进行了时程分析。通过对三种分析方法的结果对比,探讨了push-over分析方法在高层建筑结构抗震性能分析中的适用性,为进一步研究和完善push-over方法在这类结构中的应用提供了依据。论文还总结了push-over分析方法应用于实际工程的局限性,并给出了push-over分析方法在复杂高层建筑结构中应用的一些建议。更多还原

【Abstract】 The performance and displacement-based static elasto-plastic analysis has become an important structural seismic design and analysis approach due to its practicality and simplicity.In this paper the static elasto-plastic push-over method is applied for the analysisof a complicated steel structure------Hangzhou International Conference Center. Thedevelopment and current research situation, the theory foundation and the scope of application of the push-over method are first described. Then the push-over method is adopted with the aid of the ETABS software to analyze the Hangzhou International Conference Center. In the analysis four lateral load patterns are considered and the corresponding results including the nonlinear base shear-top displacement relationship and the distribution of story drifts. Based on the obtained results the seismic resistance of the structure is evaluated. In order to validate the reliability of the push-over analysis method, the response spectrum method is used to analyze the structure and the obtained distribution of story drifts, story displacements and the top-story displacements in the x and y directions are presented. Finally, the elasto-plastic time-history analysis is carried out for the structure using a simplified story model. Through comparison of the results from the above three analysis methods, the advantages and disadvantages of the push-over method and its application in tall building structures are discussed. Some suggestions for the application of the push-over method are also given.更多还原