【摘要】 针对水平地震作用下的桩土相互作用体系,建立了单桩-地基土系统三维有限元几何模型,运用此模型,对系统进行了水平地震作用下的单桩横向非线性动力响应分析,计算中,考虑了地基土的材料非线性、桩土界面状态非线性以及桩土弹模比、土体材料阻尼比和输入地震动水平等非线性因素和材料参数的影响.计算结果表明:桩土弹模比对桩土动力相互作用的影响较为明显.更多还原

【Abstract】 Considering the pile-soil interaction system under the horizontal seismic loads,this paper uses FEM software ANSYS to set up the FEM model of single pile-soil foundation.By using this model,the soil material nonlinear and pile-soil state nonlinear are analyzed.The lateral seismic response of single pile is calculated.Then pile soil stiffness ratio,soil material damping ratio and earthquake design level are taken into consideration.The calculation results indicate that the pile soil stiffness ratio is the most obvious one among three factors.更多还原