竖向不规则高层混合结构抗震性能研究

发布时间：2018-01-15 20:06

本文关键词：竖向不规则高层混合结构抗震性能研究　出处：《西安建筑科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：竖向不规则高层混合结构日益成为高层建筑的新宠儿，尤其是在超高层建筑中已经逐渐应用开来。本文依据某竖向不规则高层混合结构为原型，应用大型通用有限元软件Sap2000建立有限元计算模型，采用多种分析手段和不同计算方法，分别在弹性阶段与弹塑性阶段对结构进行动力特性、地震响应和抗震性能的综合研究以及评估。并以此为基础，归纳总结竖向不规则高层混合结构较为一般的力学规律与地震下响应行为。本文采用Sap2000，依据工程实例为原型，建立竖向不规则型钢混凝土框架-钢筋混凝土核心筒高层结构三维有限元计算模型。通过对其进行动力特性分析，探讨竖向不规则高层混合结构自身的动力特性，改变结构参数，，研究参数改变对其自身动力性能的影响，总结一般竖向不规则高层混合结构动力特性的反应规律。对结构进行振型分解反应谱分析，分析并探讨竖向不规则高层混合结构在多遇地震下结构响应行为，总结其一般规律，并对其进行抗震评价，探讨结构形式合理性与否。同时分析研究竖向地震作用与静载作用对竖向不规则高层混合结构位移的影响以及结构斜撑截面的改变对地震下结构侧移的影响。本文进一步对竖向不规则高层混合结构进行动力时程分析，研究结构在地震波下的瞬时响应行为，并进行综合的抗震性能评估，且模拟验证结构在真实地震情况下反应的合理性，最后考察竖向地震对竖向不规则高层混合结构侧移性能的影响。最后对竖向不规则高层混合结构进行弹塑性静力分析，分析并研究结构在多遇、罕遇地震下的结构响应形式，并对其进行抗震性能评估。同时判断结构薄弱层的存在与状态，并对其一般性规律进行探讨。
[Abstract]:Vertical irregular high - rise hybrid structures are increasingly becoming a new pet of high - rise buildings , especially in super - high - rise buildings . Based on a vertical irregular high - rise hybrid structure , a finite element calculation model is established by using a large - scale general finite element software Sap2000 . In this paper , the three - dimensional finite element model of high - rise structure of vertical irregular SRC frame - reinforced concrete core barrel is established by Sap2000 . Based on the engineering example , the dynamic characteristics of vertical irregular high - rise hybrid structures are discussed , the structural parameters are changed , the research parameters are changed to their own dynamic performance , and the reaction law of the dynamic characteristics of the general vertical irregular high - rise hybrid structures is summarized . In this paper , the structural response behaviors of vertical irregular high - rise hybrid structures under multi - occurrence earthquakes are analyzed and analyzed , and the general rules are summarized , and the structure rationality is discussed . The influence of vertical seismic action and static load on the displacement of vertical irregular high - rise mixed structure and the influence of structural diagonal bracing cross - section on the structure side shift under earthquake are analyzed . In this paper , the dynamic time history analysis of the vertical irregular high - rise hybrid structures is carried out , the transient response behavior of the structure under seismic waves is studied , and the comprehensive seismic performance evaluation is carried out , and the rationality of the response of the simulation verification structure in the real earthquake situation is simulated , and finally , the influence of the vertical earthquake on the lateral displacement performance of the vertical irregular high - rise hybrid structure is investigated . Finally , the elastic - plastic static analysis of the vertical irregular high - rise hybrid structure is carried out , and the structure response form of the structure under the earthquake is analyzed and studied , and the seismic performance evaluation of the structure is evaluated . At the same time , the existence and the state of the structural weak layer are judged , and the general rule of the structure is discussed .

【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU973.31

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