灾后某烟囱倒塌原因分析及检测鉴定
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摘要
受四川汶川县8.0级特大地震的影响,西安西郊某供热有限公司150 m高的锅炉房钢筋混凝土烟囱从78 m处折断倒塌.通过对烟囱倒塌现场的勘测,及烟囱残存部分的检测,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.分析表明烟囱倒塌原因为:①非正常施工缝的存在;②汶川地震的影响.
A 150 m tall reinforced concrete chimney at a heating company in Xi′an collapsed from 78thm place during Sichuan Wenchuan earthquake.Based on the comprehensive investigation and surveys to chimney collapsing site and detection of the remainder of chimney,this paper analyzes the cause of collapse combined detection results with actual construction conditions and puts forward relative suggestions.Chimney collapse causes were included in the analysis:①abnormal construction joint;②8.0 major earthquake in Wenchuan County.
A 150 m tall reinforced concrete chimney at a heating company in Xi′an collapsed from 78thm place during Sichuan Wenchuan earthquake.Based on the comprehensive investigation and surveys to chimney collapsing site and detection of the remainder of chimney,this paper analyzes the cause of collapse combined detection results with actual construction conditions and puts forward relative suggestions.Chimney collapse causes were included in the analysis:①abnormal construction joint;②8.0 major earthquake in Wenchuan County.
引文
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[2]GB50204-2002,混凝土结构工程施工质量验收规范[S].北京:中国建筑工业出版社,2002.GB50204-2002,Code for Acceptance of Constructional Quality of Concrete Structures[S].Beijing:China BuildingIndustry Press,2002.
[3]GB1499.2-2007,钢筋混凝土用钢第二部分热轧带肋钢筋[S].北京:中国标准出版社,2007.GB1499.2-2007,Steel for the reinforcement of concrete-Part2:Hot rolled ribbed bars[S].Beijing:China StandardPress,2007.
[4]JGJ 107-2003,钢筋机械连接通用技术规程[S].北京:中国建筑工业出版社,2003.JGJ 107-2003,General technical specification for mechanical splicing of bars[S].Beijing:China Building IndustryPress,2002.
[5]丰定国,王社良.抗震结构设计[M].武汉:武汉理工大学出版社,2003.FENG Ding-guo,WANG She-liang.Seismic Constructure Design[M].Wuhan:Wuhan University of TechnologyPress,2003.
[6]毛晶晶.新老混凝土界面黏结质量检验与黏结强度预测模型研究[D].长沙:湖南大学,2006.MAOJing-jing.The Research on Interfacial Bond Quality Inspection of New-to-old Concrete and the PredictionModel for the pull strength of the bonding interface[D].Changsha:Hunan University,2006.
[7]高作平,甘良绪,刘小明.新老混凝土界面连接技术[J].水利水运科学研究,1998,3(9):287-291.GAO Zuo-ping,GAN Liang-xu,LI U Xiao-ming.Connecting technique for interface between newand old concrete[J].Journal of Nanjing Hydraulic Research Institute,1998,3(9):287-291.
[8]黄东梅,李创第,朱乐东.基础隔震结构基于设计反应谱的地震作用取值[J].西安建筑科技大学学报:自然科学版,2007,39(4):504-511.HUANG Dong-mei,LI Chuang-di,ZHU Le-dong.Earthquake action calculation for base seismic isolation systembased on the designed response spectrum[J].J.Xi′an Univ.of Arch.&Tech.(Natural Science Edition),2007,39(4):504-511.
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