天津大剧院吊挂结构抗连续倒塌分析  

Progressive collapse analysis on the suspension structure of Tianjin Grand Theatre

作　　者：丁阳[1,2] 孙健[1] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]天津大学滨海土木工程结构与安全教育部重点实验室,天津300072

出　　处：《建筑结构》2013年第10期16-20,共5页Building Structure

基　　金：天津市科技支撑计划重大项目(11ZCZDSF04800)

摘　　要：天津大剧院采用了国内外应用不多的吊挂结构体系。以天津大剧院的吊挂结构为工程背景,对其进行抗连续倒塌性能分析。根据吊杆负荷面积,采用基于能量的方法,计算吊杆的重要性系数,确定关键吊杆。对单根关键吊杆失效和两根关键吊杆同时失效的情况,采用静力非线性方法对剩余结构进行响应分析。结果表明,单根吊杆失效时,吊挂结构不会发生坍塌;标高+20.9m吊挂层转角区域两根吊杆同时失效时,吊挂结构发生局部坍塌,使用过程中应注意该区域吊杆的监测。Tianjin Grand Theatre adopts a structural system of suspension.This system has few applications in the world.The resistance behavior of the system to progressive collapse was analyzed.In terms of the bearing area of suspenders,importance coefficients were evaluated and critical suspenders were determined using an energy method.Using a static nonlinear approach,the response of the residual structure was analyzed under the cases of either the failure of single suspender or the simultaneous failure of double suspenders.Results show that the Tianjin Grand Theatre would not collapse if only one suspender fails.However,when two suspenders simultaneously fail at some locations,local collapse will occur.Suspension structure partially collapses when two suspenders in the corner area of 20.9 high suspended layers fail at the same time.Therefore,it is suggested that the monitoring of these critical suspenders be needed when the suspension structure is in use.

关 键 词：天津大剧院 吊挂结构 吊杆 移除构件法 连续倒塌 

分 类 号：TU322[建筑科学—结构工程]