（1 西安理工大学土木建筑工程学院， 西安 710048； 2 中广电广播电影电视设计研究院， 北京 100045）

［摘要］河南省某广播电视发射塔发生倒塌事故，通过事故现场调查及构件材料检测，对该钢结构广播电视发射塔的倒塌原因做出了初步判断，采用3D3S有限元软件对结构进行稳定性分析，进一步验证事故原因。结果表明，该塔未按规范进行设计，结构薄弱环节未设置横隔，塔体局部构件承载力不足是导致结构失稳倒塌的主要原因。最后对该类钢结构广播电视发射塔提出后期维护的建议。

［关键词］钢结构； 广播电视发射塔； 失稳倒塌； 事故分析； 3D3S软件

中图分类号：文献标识码：A文章编号：1002-848X(2018)13-0106-04

Analysis of collapsed steel structure radio and television transmission tower

Xia Daqiao1,2, Chen Cai2, Zhao Hailong2

(1 School of Civil Engineering and Architectural，Xi′an University of Technology, Xi ′an 710048, China; 2 Radio Film & TV Design Research Institute, Beijing 100045, China)

Abstract:There was a collapse accident of a radio and television transmission tower in Henan Province. The cause of the collapse of the steel tower was judged by the accident site investigation and the testing of the component material. The stability analysis of the structure was carried out by the 3D3S finite element software to further verify the cause of the accident. The results show that the tower has not been designed according to the standard, and the transverse ribs are not set in weak link of the structure, and the insufficient bearing capacity of the local component of the tower is the main reason for the collapse of the structure. Finally, suggestions for later maintenance of this type of steel structure radio and television transmission tower were put forward.

Keywords:steel structure; radio and television transmission tower; collapse due to instability; accident analysis; 3D3S software

作者简介：夏大桥，硕士，高级工程师，一级注册结构工程师，一级建造师，注册监理工程师，Email:xiadaqiao@drft.com.cn。