芦山7.0级地震单层砖柱排架厂房震害特征及抗震分析
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摘要
单层砖柱排架厂房是我国中小企业生产用房的主要形式,目前此类结构仍广泛存在于经济欠发达的地区。历次地震震害资料表明,单层砖柱排架厂房在地震中比较容易损坏。本文通过对芦山地震中单层砖柱排架厂房的震害现场调查,总结了单层砖柱排架厂房的震害特征并分析其破坏原因;统计了几次地震中单层砖柱排架厂房的震害资料,给出了修正的未设防单层砖柱排架厂房地震易损性矩阵;最后,采用了逐步回归法,柱顶位移角法及模糊震害指数法分别对单层砖柱排架厂房进行震害预测,并将各种方法的震害预测结果与实际震害情况进行了对比分析。本文研究对认识该类结构的易损性、震害机理和抗震薄弱部位,指导抗震加固有着重要意义。
Single-story brick bent frame column industrial buildings is a main form of production space of small and medium enterprises in china,and the structure is still widespread in economically underdeveloped regions currently.Previous earthquake damage data indicate that single-story brick bent frame column industrial buildings are more prone to be damaged in earthquakes.Based on the seismic damage investigation,the damage characteristics of single-story brick bent frame column industrial buildings are summed up and the reasons of its destruction are analyzed.The corrected seismic vulnerability matrix for undefended single-story brick bent frame column industrial buildings is given according to several earthquakes damage data.Finally,the collected data are predicted by using the stepwise regression method,capital displacement angle method and fuzzy seismic damage index prediction method,and make a comparative analysis of damage prediction results and the actual situation.The research work is helpful in guiding the seismic reinforcement and understanding vulnerability,earthquake damage mechanism as well as seismic weak part of the structure.
Single-story brick bent frame column industrial buildings is a main form of production space of small and medium enterprises in china,and the structure is still widespread in economically underdeveloped regions currently.Previous earthquake damage data indicate that single-story brick bent frame column industrial buildings are more prone to be damaged in earthquakes.Based on the seismic damage investigation,the damage characteristics of single-story brick bent frame column industrial buildings are summed up and the reasons of its destruction are analyzed.The corrected seismic vulnerability matrix for undefended single-story brick bent frame column industrial buildings is given according to several earthquakes damage data.Finally,the collected data are predicted by using the stepwise regression method,capital displacement angle method and fuzzy seismic damage index prediction method,and make a comparative analysis of damage prediction results and the actual situation.The research work is helpful in guiding the seismic reinforcement and understanding vulnerability,earthquake damage mechanism as well as seismic weak part of the structure.
引文
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[8]吴育才,黄宗明,王金海.单层工业厂房震例及其应用[M].济南:山东科学技术出版社,1991.WU Yucai,HUANG Zongming,WANG Jinhai.Earthquake damage cases and their studies for single story industrial buildings[M].Jinan:ShandongScience&Technology Press,1991.(in Chinese)
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[11]徐敬海,刘伟庆,邓民宪.建筑物震害预测模糊震害指数法[J].地震工程与工程振动,2002,22(6):84-88.XU Jinghai,LIU Weiqing,DENG Minxian.Fuzzy seismic damage index prediction method for building seismic damage[J].Journal of Earth-quake Engineering and Engineering Vibration,2002,22(6):84-88.(in Chinese)
[2]徐建.单层工业厂房抗震设计[M].北京:地震出版社,2004.
[3]李树桢.地震灾害评估[M].北京:地震出版社,1996.
[4]中国科学院工程力学研究所.海城地震震害[M].北京:地震出版社,1979.
[5]刘恢先.唐山大地震震害(二)[M].北京:地震出版社,1986.
[6]孙柏涛,孙福梁,李树桢,等.包头西6.4级地震震害[M].北京:中国科学技术出版社,2000.
[7]张号浩.单层钢筋混凝土柱厂房地震易损性分析[D].哈尔滨:中国地震局工程力学研究所,2011.
[8]吴育才,黄宗明,王金海.单层工业厂房震例及其应用[M].济南:山东科学技术出版社,1991.WU Yucai,HUANG Zongming,WANG Jinhai.Earthquake damage cases and their studies for single story industrial buildings[M].Jinan:ShandongScience&Technology Press,1991.(in Chinese)
[9]谭望庭.工业厂房的震害预测方法研究[D].武汉:华中科技大学,2011.
[10]李荷,高小旺,苏经宇,等.城市和企业地震影响灾害预测及减灾对策[M].北京:中国铁道出版社,1997.
[11]徐敬海,刘伟庆,邓民宪.建筑物震害预测模糊震害指数法[J].地震工程与工程振动,2002,22(6):84-88.XU Jinghai,LIU Weiqing,DENG Minxian.Fuzzy seismic damage index prediction method for building seismic damage[J].Journal of Earth-quake Engineering and Engineering Vibration,2002,22(6):84-88.(in Chinese)
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