建筑物非均质地基的地震液化有效应力判别法
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摘要
在建筑物均质地基地震液化总应力判别法的基础上 ,针对非均质建筑物地基 ,利用锥体传力机制 ,求得地基中的附加动应力场 ,对于复杂成层地基 ,提出了可以直接求解地基中孔隙水压力的地震液化有效应力法判别方法 .结合多孔介质动力学理论 ,给出了横向不均匀的复杂地基的分析方法
Based on the total stress method, the cone model theory is introduced to calculate the dynamic stress field of subsoil, so that the pore water pressure under the building can be evaluated directly. The effective stress method is suggested to evaluate the liquefaction potential of inhomogeneous building's subsoil. With the help of the theory for multi phased medium, a method is given to analyze the complex layered and inhomogeneous soil foundation.
Based on the total stress method, the cone model theory is introduced to calculate the dynamic stress field of subsoil, so that the pore water pressure under the building can be evaluated directly. The effective stress method is suggested to evaluate the liquefaction potential of inhomogeneous building's subsoil. With the help of the theory for multi phased medium, a method is given to analyze the complex layered and inhomogeneous soil foundation.
引文
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[1 2 ] MeekJW .Conemodelsforhomogeneoussoil [J].Geot.Eng .ASCE ,1 992 ,1 1 8.
[1 3] MeekJW ,WolfJP .,Whyconemodelscanrepresenttheelastichalf space [J].EESD ,1 993,2 2 .
[1 4] 门福录 .含水与不含水地层的分层交错对地面运动和波传播的影响 [J].地球物理学报 .,1 995 ,38(6 ) .
[2 ] Kawask ,etal.Dynamiccentrifugemodelingofanisolatedfootingfortransmissionlinetower [C].Proc.fromthesixthJapan U .sworkshoponearthquakeresistantdesignoflifelinefacilitiesandcountermeasureagainstsoilliquefaction ,2 34— 2 43,1 996 .
[3] 刘惠珊 ,乔太平 .有基础作用时饱和砂层的液化特性 [A].“地基与工业建筑抗震” [M ].北京 :地震出版社 ,1 984.
[4] 门福录 ,崔杰 ,景立平 ,陈文化 .建筑物饱和砂土地基地震液化判别的简化分析方法 [J].水利学报 ,1 998,(5 ) .
[5 ] FinnWD ,etal.Analysisofporewaterpressureinseismiccentrifugetests [J].SoilDynamicsandliquefaction ,1 987.
[6 ] Dobry .etal.Centrifugeofshallowfoundationsonsaturatedsandduringearthquake [C].Proc.4thJapan U .Sworkshop ,onearthquake,resistantdesignoflifelinefactiesandcountermeasuresforsoilliquefaction ,Honolulu .1 995 ,1 :493-5 0 8.
[7] Fu luMen ,JieCui,Influenceofbuildingexistenceonseismicliquefactionofsubsoils [J].Earthq.Eng.Struc.Dyn ,1 997,2 6 .
[8] 陈文化 ,门福录 ,景立平 ,王德润 .有建筑物存在的饱和砂土地基液化振动台模拟实验研究 [J].地震工程与工程振动 ,1 998,1 8(4 ) .
[9] 陈文化 .建筑物地基地震液化问题 [D].哈尔滨 :中国地震局工程力学研究所 ,1 999.
[1 0 ] Fu luMen ,JieCui.Seismicliquefactionofsubsoilsofbuilding ,StructuralDynamics [M]. 1 0 5 1 -1 0 5 8Balke maPress,1 996 .
[1 1 ] 陈文化 ,等 .建筑物饱和砂土地基地震液化有效应力法 [J].地震工程与工程振动 ,2 0 0 0 ,2 0 (1 ) .
[1 2 ] MeekJW .Conemodelsforhomogeneoussoil [J].Geot.Eng .ASCE ,1 992 ,1 1 8.
[1 3] MeekJW ,WolfJP .,Whyconemodelscanrepresenttheelastichalf space [J].EESD ,1 993,2 2 .
[1 4] 门福录 .含水与不含水地层的分层交错对地面运动和波传播的影响 [J].地球物理学报 .,1 995 ,38(6 ) .
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