（广东省建筑设计研究院， 广州 510010）

［摘要］通过屋面刚性壳体和索（杆）体系的不同破坏工况对肇庆新区体育馆连体弦支穹顶结构进行防连续倒塌分析。结果表明，屋面刚性壳体、单根索（杆）体系均不会引起整体结构破坏或其他拉索松弛；支撑体系的破坏会引起整体结构的局部变形过大及构件破坏，并对这些支撑体系补充防撞分析；对于构件分布位置，从外环往内环其重要程度依次降低；在设计过程中应充分考虑结构的安全储备，提高重点部位构件安全等级，针对施工和使用过程中不可抗力的意外破坏，结构具备足够的防连续倒塌能力。

［关键词］肇庆新区体育馆； 弦支穹顶； 防连续倒塌； 断索分析

中图分类号：TU398-7文献标识码：A文章编号：1002-848X(2016)21-0075-05

Progressive collapse resistance analysis on conjoined suspendome structure of  Zhaoqing New District Stadium

Ou Tong， Chen Jinyu， Tan Jian

(Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010, China)

Abstract:Progressive collapse resistance analysis of conjoined suspendome structure of Zhaoqing New District Stadium was carried out under different damage working conditions of roof rigid shell and cable system. The analysis results show that the roof rigid shell and single cable system does not cause the overall structural failure or other cable slack. The destruction of the supporting system can cause too large local deformation of the whole structure and destruction of the components, and anti-collision analysis is supplemented for the supporting system. For component distribution location, the importance degree of the components decreases from the outer ring to the inner ring. The security reserve of the structure should be fully considered in the process of design to improve safety level of the components in key parts. For the accident damage due to force majeure in construction and service processes, this structure has the enough progressive collapse resistance ability.

Keywords:Zhaoqing New District Stadium; suspendome; progressive collapse resistance; cable breaking analysis

作者简介：区彤，一级注册结构工程师，Email：kogends@136.com。