（华东建筑设计研究院有限公司， 上海 200070）

［摘要］国内异形结构的设计刚刚起步，以山西大同大剧院为工程背景，对结构设计过程中的一系列难点展开深入研究及分析，论证其大跨度异形壳体结构设计的合理性及可实施性。大同大剧院异形混凝土壳体形状如“山”字形，屋面波澜起伏，最大跨度约50m，厚度300mm。落地壳体、剧院框架、门厅内2个混凝土异形筒柱成为屋面壳体的主要竖向承重构件。对本项目做了风洞数值模拟试验以确定风荷载取值；利用ABAQUS有限元软件分析异形混凝土壳体的稳定性及罕遇地震作用下主要构件的性能指标；利用ANSYS有限元软件对大体积混凝土连续浇筑产生的收缩、徐变进行分析；利用MIDAS/Gen有限元软件分析异形混凝土壳体的温度应力及内力。上述分析有效地保证了结构的整体安全性。

［关键词］大同大剧院； 异形混凝土壳体； 异形筒柱； 大跨； 稳定分析； 收缩徐变； 温度荷载； 弹塑性分析

中图分类号：TU318文献标识码：A文章编号：1002-848X(2017)07-0014-06

Structural design of irregular concrete shell of Datong Grand Theatre

Zhu Jiang, Cao Faheng, Hua Bingcan, Ling Lan

（East China Architectural Design & Research Institute Co.,Ltd., Shanghai 200070, China）

Abstract:The design of the irregular structure has just started in China. Taking Datong Grand Theatre in Shanxi Province as the engineering background, a series of difficulties in the process of structural design were studied and analyzed in detail. The rationality and feasibility of structural design of large-span irregular concrete shell were demonstrated. The  irregular concrete shell shape of Datong Grand Theatre   is mountain-shaped. The structural roof has waves, with the maximum span of about 50m and thickness of 300mm. The main vertical load bearing components of the roof shell consist of floor shell, theatre frame and two concrete irregular tube-columns in hall. The numerical simulation test using the wind tunnel was carried out to determine the wind load value. The ABAQUS finite element software was used to analyze the stability of the irregular concrete shell and the performance of the main components under the rare earthquake. The ANSYS finite element software was used to analyze the shrinkage and creep of large volume concrete cast continuously, and the temperature stress and internal force of the irregular concrete shell were analyzed by MIDAS/Gen finite element software. The above analyses effectively ensure the overall safety of the structure.

Keywords:Datong Grand Theatre; irregular concrete shell; irregular tube-column; large-span; stability analysis; shrinkage creep; temperature load; elastic-plastic analysis

作者简介：朱江，本科，高级工程师，一级注册结构工程师，Email: jiang_zhu@arcplus.com.cn。