Gibson地基波阻板隔振分析
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摘要
采用薄层法层状半空间基本解答作为格林函数的边界元法,对Gibson地基三维波阻板(WIB)隔振设计进行了详细的参数分析。结果表明Gibson地基内采用WIB隔振有较好的隔振效果;应保证WIB具有合理的宽度和较小的埋深;增加WIB的厚度和模量是提高隔振效果的最有效的两种措施;此外地基竖向模量变化对WIB隔振效果也具有一定的影响。本文的研究成果对于WIB隔振设计的推广使用具有重要意义。
Considering the fundamental solution of Gibson halfspace obtained by Thin-layer method as the Green function for BEM,some parameters in the design of 3-D Wave Impeding Block(WIB) isolation for the Gibson homogenous elastic halfspace and stratified foundation are studied in detail.The result indicates that relatively good isolation effect can be obtained by WIB in the Gibson foundation,while the WIB haves reasonable breadth and relatively small embedment depth.Increasing the thickness and modulus of WIB is most effective way to get a good effect of isolation.The Gibson ground's property has some influence on the effect of isolation also.The research in this paper will be helpful for the application of WIB in popular.
Considering the fundamental solution of Gibson halfspace obtained by Thin-layer method as the Green function for BEM,some parameters in the design of 3-D Wave Impeding Block(WIB) isolation for the Gibson homogenous elastic halfspace and stratified foundation are studied in detail.The result indicates that relatively good isolation effect can be obtained by WIB in the Gibson foundation,while the WIB haves reasonable breadth and relatively small embedment depth.Increasing the thickness and modulus of WIB is most effective way to get a good effect of isolation.The Gibson ground's property has some influence on the effect of isolation also.The research in this paper will be helpful for the application of WIB in popular.
引文
[1]高广运,彭争光,李伟,等.三维层状地基空沟主动隔振分析[J].西北地震学报,2006,28(3):210-215.
[2]高广运,彭争光,张梦芳,等.层状地基空沟被动隔振分析[J].西北地震学报,2009,31(2):115-120.
[3]Schmid G,Chouw N,Le R.Shielding of structures from soilvibrations[A]∥Proceedings of Soil Dyn.and Earth.Eng.V[C].USA.San Francisco:Computational Mechanics Publica-tions,1992:651-662.
[4]Takemiya H,Jiang Jian-qun.Wave impeding effect by bur-ied rigid block and response reduction of dynamically excitedpile foundation[J].Structural Eng.and Earth.Eng.,1993,10(3):149-156.
[5]Takemiya H,Fujiwara A.Wave propagation/impediment in astratum and wave impeding block(WIB)measured for SSI re-sponse reduction[J].Soil Dynamics and Earthquake Engineer-ing,1994,13:49-61.
[6]Peplow A T,Jones C J C,Petyt M.Surface vibration propa-gation over a layered elastic half-space with an inclusion[J].Applied Acoustics,1999,56:283-296.
[7]国家标准《隔振设计规范》GB50463-2008[S].北京:中国计划出版社出版,2008.
[8]Leung K L,Beskos D E,Vardoulakis I G.Vibration isolationusing open or filled trenches[J].Comput.Mech.,1990,(7):137-48.
[9]Kausel K.The Thin-Layer Method in seismology and earth-quake engineering.Wave Motion in Earthquake Engineering[M].Southampton,Bostom:WIT Press,2000:193-213.
[10]李伟.层状地基WIB主动隔振分析[D].同济大学,2005.
[11]王贻荪.地面波动分析若干问题[J].建筑结构学报,1982,3(2):56-67.
[2]高广运,彭争光,张梦芳,等.层状地基空沟被动隔振分析[J].西北地震学报,2009,31(2):115-120.
[3]Schmid G,Chouw N,Le R.Shielding of structures from soilvibrations[A]∥Proceedings of Soil Dyn.and Earth.Eng.V[C].USA.San Francisco:Computational Mechanics Publica-tions,1992:651-662.
[4]Takemiya H,Jiang Jian-qun.Wave impeding effect by bur-ied rigid block and response reduction of dynamically excitedpile foundation[J].Structural Eng.and Earth.Eng.,1993,10(3):149-156.
[5]Takemiya H,Fujiwara A.Wave propagation/impediment in astratum and wave impeding block(WIB)measured for SSI re-sponse reduction[J].Soil Dynamics and Earthquake Engineer-ing,1994,13:49-61.
[6]Peplow A T,Jones C J C,Petyt M.Surface vibration propa-gation over a layered elastic half-space with an inclusion[J].Applied Acoustics,1999,56:283-296.
[7]国家标准《隔振设计规范》GB50463-2008[S].北京:中国计划出版社出版,2008.
[8]Leung K L,Beskos D E,Vardoulakis I G.Vibration isolationusing open or filled trenches[J].Comput.Mech.,1990,(7):137-48.
[9]Kausel K.The Thin-Layer Method in seismology and earth-quake engineering.Wave Motion in Earthquake Engineering[M].Southampton,Bostom:WIT Press,2000:193-213.
[10]李伟.层状地基WIB主动隔振分析[D].同济大学,2005.
[11]王贻荪.地面波动分析若干问题[J].建筑结构学报,1982,3(2):56-67.
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