基于峰值速度的生土围护墙倾倒限值分析
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摘要
目前农村存在大量生土墙围护的木结构房屋,此类房屋特别是围护墙体在历次地震中受灾非常严重。为了避免墙体在不同地震烈度下发生倾覆倒塌,基于峰值速度,通过简化力学模型对生土围护墙在地震中倾覆倒塌的破坏机理进行分析,得出不同地震烈度下其高厚比的限值。与用加速度值对生土围护墙倾倒高厚比限值的分析结果进行对比,分析存在的差异与原因,得出符合实际的高厚比限值。对于避免生土墙体在不同地震烈度下发生倾覆倒塌具有一定的参考意义。
In rural areas there are a large number of houses which are usually made of timber frame with surrounding earth walls.This kind of houses,especially the retaining walls collapsed grievously during the previous earthquakes.In order to avoid the collapse of surrounding earth walls under different seismic.The damage mechanism is studied based on peak velocity by simplifying the mechanical model of retaining wall collapsed out-of-plane during the earthquake,and height-width ratio limits suffering different seismic are obtained.Realistic height-width ratio limits are obtained by comparing the results calculated by acceleration rate on retaining wall and analyzing the varies and causes.The results would have some referenced meaning for avoiding the collapse of surrounding earth walls under different seismic.
In rural areas there are a large number of houses which are usually made of timber frame with surrounding earth walls.This kind of houses,especially the retaining walls collapsed grievously during the previous earthquakes.In order to avoid the collapse of surrounding earth walls under different seismic.The damage mechanism is studied based on peak velocity by simplifying the mechanical model of retaining wall collapsed out-of-plane during the earthquake,and height-width ratio limits suffering different seismic are obtained.Realistic height-width ratio limits are obtained by comparing the results calculated by acceleration rate on retaining wall and analyzing the varies and causes.The results would have some referenced meaning for avoiding the collapse of surrounding earth walls under different seismic.
引文
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[2]何玲.村庄与集镇木构架房屋的抗震设计实例分析[D].昆明:昆明理工大学建筑工程学院,2007He Ling.The seismic design case study of the wooden frame houses of villages and market towns[D].Kunming:Kunming University of Science&Technology,2007(in Chinese)
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[4]http://news.sohu.com/s2009/yaoandizhen/
[5]GB/J50005—2001,建筑抗震设计规范(2008年版)[S]GB/J50005—2001,Code for seismic design of buildings(2008Edition)[S](in Chinese)
[6]胡聿贤.地震工程学[M].北京:地震出版社,1988Hu Yu-xian.Earthquake Engineering[M].Earthquake Press,1988(in Chinese)
[7]潘鹏,曹海韵,潘振华,等.中日建筑抗震设防标准和抗震设计方法比较[A].汶川地震建筑震害调查与灾后重建分析报告[C],2008,10Pan Peng,Cao Hai-yun,Pan Zhen-hua,et al.Comparison between anti-seismic fortification standards and earthquake-resistant design of Sino-Japanese Architecture[R],2008,10(in Chinese)
[8]焦春节,陶忠,潘文.生土围护墙倾覆倒塌高厚比限值分析[J].建筑结构,2009Jiao Chun-jie,Tao Zhong,Pan Wen.Limit of height-width ratio of surrounding earth wall under earthquake[J].Building Structure,2009(in Chinese)
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