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结合EL Naggar和Nogami的研究成果,建立了一种桩土侧向非线性动力相互作用计算的简化模型,给出了相应模型参数的确定方法,并依据渡槽原理性拟动力试验结果,对其适用性进行了分析。结果表明,根据简化模型建立的渡槽拟动力试验模型有限元模型计算得到的墩身位移及槽体位移的最大值和位移时程与试验结果吻合较好,说明所建立的桩土动力非线性简化模型基本上能反映试验桩土的相互作用情况,能满足工程精度要求。另外,该模型具有计算效率高且非线性分析易于收敛等特点,是土-桩-结构水平动力非线性响应近似估计的一种有效方法。
Based on the research results of EL Naggar and Nogami, a simplified model for calculating lateral nonlinear dynamic interaction of pile-soil is established. The method of determining the parameters of the model is established. According to the pseudo-dynamic experimental results of aqueduct, Sexuality was analyzed. The results show that the maximum displacements and displacements of the pier body and the displacements of the pier body calculated from the finite element model of the aqueduct pseudo-dynamic experimental model established by the simplified model are in good agreement with the experimental results, indicating that the simplified nonlinear dynamics of the pile-soil dynamic The model can basically reflect the interaction of the test pile soil, to meet the requirements of engineering accuracy. In addition, the model has the characteristics of high computational efficiency and easy convergence of nonlinear analysis, and is an effective method for approximate estimation of nonlinear response of soil-pile-structure horizontal dynamics.