张兴虎¹，侯  炜¹，常战仁²，郭  栋¹
（1 西安建筑科技大学土木工程学院，西安710055; 2 西安建筑科技大学建筑设计研究院，西安710055）

[摘要] 受四川汶川8.0级特大地震的影响，西安西郊某150m高的钢筋混凝土烟囱从78m处折断倒塌。通过对烟囱倒塌现场的勘测及烟囱残存部分和基础的检测，结合检测结果及施工情况的分析，得出了烟囱倒塌的原因并提出了相关建议，以避免此类事故的再次发生。同时，对烟囱的抗震性能进行了模态分析和反应谱分析，结合其地震反应特点，验证了烟囱倒塌发生的原因。
[关键词] 烟囱；倒塌；检测鉴定；原因分析；有限元

The collapse cause and finite element analysis for one chimney after earthquake
Zhang Xinghu¹, Hou Wei¹, Chang zhanren², Guo Dong¹
(1 School of Civil Engineering, Xi'an University ofArchitecture and Technology, Xi'an 710055, China;2 Institute of Architecture Design and Research, Xi'an University ofArchitecture and Technology, Xi'an 710055, China)

Abstract: One 150m high reinforced concrete chimney collapsed at height of 78m, which was affected by Sichuan Wenchuan County 8.0 major earthquake in Xi'an. Based on the comprehensive investigation and in-situ surveys to chimney collapsing site and detection of the remainder of chimney, the cause of collapse combined detection results with actual construction conditions and puts forward related suggestions were analyzed. Meanwhile, the seismic performance by using modal analysis method and response spectrum method is analyzed. According to analysis of the seismic response features, the causes of chimney collapse is verified.
Keyword: chimney; collapse; test appraisal; cause analysis; finite element