变参数土层中单桩水平动力阻抗的简化计算
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摘要
给出一个求解变参数土层中单桩水平动力阻抗的简化计算方法 ,即把变参数土层等效为均匀土层 ,把变参数土层中单桩水平动力阻抗的计算转化为均匀土层中单桩水平动力阻抗的计算 .算例表明 ,选取合适的等效权函数 ,可以得到较为满意的结果
A simple method is developed for computing the horizontal impedance of single pile in soil layer with variable properties. Using this method, the soil layer with variable properties is turned into an equivalent homogeneous soil layer, so the horizontal impedance of single pile in soil layer with variable properties can be calculated easily under the condition of the equivalent homogeneous soil layer. A numerical example is given. The results indicate that the method presented in this paper is practicable if the weighted function is selected properly.
A simple method is developed for computing the horizontal impedance of single pile in soil layer with variable properties. Using this method, the soil layer with variable properties is turned into an equivalent homogeneous soil layer, so the horizontal impedance of single pile in soil layer with variable properties can be calculated easily under the condition of the equivalent homogeneous soil layer. A numerical example is given. The results indicate that the method presented in this paper is practicable if the weighted function is selected properly.
引文
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[8] 楼梦麟 .变参数层状地基动力柔度系数的近似计算方法 [J] .计算力学学报 ,1998,15( 1) :75- 79.
[9] 楼梦麟 .变参数土层动力特性与土层地震反应分析 [J] .同济大学学报 ,1997,2 5( 2 ) :155- 16 0
[2 ] NogamiT ,NovakM .Resistanceofsoiltoahorizontalvibrationpile[J] .EESD ,1977,5( 3) :2 4 9- 2 6 1.
[3] NovakM ,Aboul-Ella .Impedancefunctionsofpilesinlayeredmedia[J] .JEngMechDiv ,1991,10 4 ( 3) :6 43- 6 6 1.
[4 ] GazetasG ,DobryR .Horizontalresponseofpiesinlayeredsoils[J] .JGeotechEngngDiv ,1984 ,110 ( 1) :2 0 - 40 .
[5] KayniaAM ,KauselE .Dynamicstiffnessandseismicresponseofpilegroup[R] .Massachusetts:InstituteofTechnology ,1982 .
[6 ] VeletsosAS ,VervicB .Vibrationofviscoelasticfoundations[J] .InternationalJournalofEarthquakeEngineeringandStructuralDynamics,1973,2 ( 1) :87- 10 2 .
[7] LOUMeng -ling ,WUJing -ning .Effectsofsoil-structureinteractiononstructurevibrationcontrol[A] .ZHANGChu -han ,WolfJP .DynamicSoil-StructureInteraction (CurrentResearchinChinaandSwitzerland) [C] .Beijing :InteractionalAcademicPublisher ,1997.188- 2 0 1.
[8] 楼梦麟 .变参数层状地基动力柔度系数的近似计算方法 [J] .计算力学学报 ,1998,15( 1) :75- 79.
[9] 楼梦麟 .变参数土层动力特性与土层地震反应分析 [J] .同济大学学报 ,1997,2 5( 2 ) :155- 16 0
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