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張興虎¹，侯  煒¹，常戰(zhàn)仁²，郭  棟¹
（1 西安建筑科技大學(xué)土木工程學(xué)院，西安710055; 2 西安建筑科技大學(xué)建筑設(shè)計(jì)研究院，西安710055）

[摘要] 受四川汶川8.0級(jí)特大地震的影響，西安西郊某150m高的鋼筋混凝土煙囪從78m處折斷倒塌。通過(guò)對(duì)煙囪倒塌現(xiàn)場(chǎng)的勘測(cè)及煙囪殘存部分和基礎(chǔ)的檢測(cè)，結(jié)合檢測(cè)結(jié)果及施工情況的分析，得出了煙囪倒塌的原因并提出了相關(guān)建議，以避免此類(lèi)事故的再次發(fā)生。同時(shí)，對(duì)煙囪的抗震性能進(jìn)行了模態(tài)分析和反應(yīng)譜分析，結(jié)合其地震反應(yīng)特點(diǎn)，驗(yàn)證了煙囪倒塌發(fā)生的原因。
[關(guān)鍵詞] 煙囪；倒塌；檢測(cè)鑒定；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