(上海大学土木工程系， 上海 200083)

［摘要］高地震烈度区昆明某住宅项目采用剪力墙结构体系，结构总高度120.4m，存在一项凹凸不规则，且具有高宽比大、剪力墙在地震作用下内力大等特点。设计时在保证大高宽比结构满足规范要求的同时，还要使结构两个方向的动力特性相近。选用YJK，ETABS和SAUSAGE软件对结构进行计算，计算内容包括小震反应谱分析、小震弹性时程分析、中震分析、大震弹塑性时程分析以及大震弹塑性静力分析。并且根据专家要求，对结构关键部分进行了框架-剪力墙模型以及实体单元模型的补充验算，保证了结构设计的可靠性。结果表明：通过合理的结构平面布置，提高了结构效率，使结构在小震和大震作用下都能保证良好的抗震性能，安全可行。

［关键词］超高层建筑； 剪力墙结构； 高烈度区； 大高宽比； 时程分析； 优化设计

中图分类号：TU318文献标识码：A文章编号：1002-848X(2020)11-0021-06

Optimization design of a residential building with large height-width ratio in high seismic fortification intensity area

ZHU Jiejiang, GU Yuanjie

(Department of Civil Engineering, Shanghai University, Shanghai 200083， China)

Abstract:A residential project in high seismic fortification intensity area in Kunming adopts the shear wall structural system. The total height of the structure is 120.4m. There is a concave-convex irregularity, and it has the characteristics of large height-width ratio, large internal forces of the shear wall under the earthquake. While designing to ensure that the structure with large height-width ratio meets the requirements of the specification, the dynamic characteristics of the structure in both directions should be similar. YJK, ETABS and SAUSAGE software were used to calculate the structure. The calculation contents included response spectrum analysis under frequent earthquakes, elastic time-history analysis under frequent earthquakes, analysis under fortification earthquakes, elastoplastic time-history analysis under rare earthquakes and elastoplastic static analysis under rare earthquakes. According to the requirements of experts, supplementary calculations of the frame-shear wall model and the solid element model were performed on the key parts of the structure to ensure the reliability of the structural design. The results show that, through reasonable structural layout, the structural efficiency is improved, and the structure can ensure good seismic performance under frequent and rare earthquakes, and is safe and feasible.

Keywords:super-tall building; shear wall structure; high seismic fortification intensity area; large height-width ratio; time-history analysis; optimization design

作者简介：朱杰江，博士，教授，博士生导师，一级注册结构工程师，Email: zhujjt@shu.edu.cn。