倒塌分析在某500m级超高层建筑抗震设计中的应用*
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(1 清华大学土木系，北京 100084； 2 北京市建筑设计研究院有限公司，北京 100045； 3 北京交通大学土木工程学院，北京 100044)
［摘要］近年来我国超高层建筑发展迅速，其抗震安全性受到广泛重视。基于弹塑性计算的倒塌分析是研究结构抗震安全的重要手段，并已在常规结构设计中得到大量应用，但是在超高层建筑中此类研究还很少。因此，结合某500 m级超高层建筑抗震设计实例，采用倒塌分析对其抗震设计方法及改进措施进行了系统的研究，研究工作涵盖工程设计的主要过程，从结构体系到设计参数，再到具体构件的设计方案。研究工作表明，倒塌分析可以帮助改进结构抗震设计，提高抗震性能，同时控制工程造价。研究可为类似超高层建筑抗震设计提供参考。［关键词］超高层建筑; 抗震设计; 倒塌分析; 最小剪力系数中图分类号：TU318+.2，TU973 文献标识码：A 文章编号：1002-848X(2015)23-0091-07
Application of collapse analysis in seismic design of a super-tall building over 500mLu Xinzheng1, Yang Weibiao2, Lu Xiao3, Qi Wuhui2, Liu Bin2, Zhang Wankai2, Ye Lieping1(1 Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 2 Beijing Institute of Architectural Design, Beijing 100045, China; 3 School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)Abstract: In recent decade super-tall buildings develop quickly in China, and the seismic safety is attached great importance. Collapse analysis based on elasto-plastic calculation is an important method to study the structural seismic safety, which is widely used in the regular structural designs. However, the application of this method in super-tall buildings is rare. Hence, based on the seismic design of a super-tall building over 500m, collapse analysis was adopted to investigate the seismic design method and the improvement measures systematically. The major processes during the engineering design were covered, including the structural system, design parameters and design schemes of specific members. The research results show that collapse analysis can help improve the structural seismic design, enhance the seismic performance and control the construction cost. The research can provide reference for seismic design of similar super-tall buildings.Keywords:super-tall building; seismic design; collapse analysis; minimum shear force coefficient
*国家自然科学基金(51408034)，国家科技支撑计划(2015BAK17B00)，中央高校基本科研业务费专项资金（2014JBM078，2015RC057）。作者简介：陆新征，博士，教授，博士生导师，Email：luxz@tsinghua.edu.cn。
