（杭州中联筑境建筑设计有限公司， 杭州 310011）

［摘要］杭州下沙大剧院为复杂多塔连体结构，下部采用钢框架-钢支撑结构，屋面采用大跨双层空间桁架，采用单层空间网壳结构做落地墙面。本工程根据建筑功能分为两个结构单元，分别对应剧院和多功能厅。介绍了剧院结构设计中的重点，包括多遇地震下的结构响应、振型分解反应谱法和时程分析法的对比、重要节点的有限元分析、连体结构的屈曲分析、空间结构的大震弹塑性分析、超长结构楼板温度作用分析、楼板的大震下应力分析及舒适度分析、风荷载下的结构响应、通高柱计算长度分析和抗连续倒塌分析等，以验证设计的合理性和安全性。

［关键词］大跨空间结构； 网壳结构； 非线性屈曲分析；大震弹塑性分析；楼板应力及舒适度；抗连续倒塌分析

中图分类号：TU393-3文献标识码：A文章编号：1002-848X(2021)06-0059-09

Analysis of key points and difficulties of structural design of Hangzhou Xiasha Grand Theater

LU Jun, CAO Xuefeng, WANG Pengfei, JIN Weiming, WU Jianle

(CCTN Architectural Design Co., Ltd., Hangzhou 310011, China)

Abstract:Hangzhou Xiasha  Grand Theater is a complex multi-tower conjoined structure. The lower part adopts a steel frame-steel support structure, the roof adopts a large-span double-layer space truss, and a single-layer space latticed shell structure is used as the floor wall. The project is divided into two structural units according to the building function, which is a theater and a multi-function hall. The key points of structural design of the theater was introduced, including the structural response under frequent earthquakes, comparison of mode-supperposition response spectrum method and time history analysis method, finite element analysis of important nodes, buckling analysis of conjoined structures, elastoplastic analysis of space structure under rare earthquake, temperature effect analysis of super-long structure floor, stress analysis and comfort analysis of floor under rare earthquake, the structural response of wind load, calculation length analysis of through-height column and anti-continuous collapse resistance analysis, etc., to verify the rationality of the structural design and safety.

Keywords:large-span space structure; latticed shell structure; nonlinear buckling analysis;elastoplastic analysis under rare earthquake;stress and comfort of floor; anti-continuous collapse resistance analysis

作者简介：陆俊，学士，高级工程师，Email:jun_lu@acctn.com。