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通过数值计算,分析某典型饱和土-群桩结构共同作用体系三维地震反应分析中土层侧向远置边界设置位置的影响,探讨土层与群桩结构地震反应随土层计算范围不同而变化的规律。由分析结果得知,沿地震波输入方向土体尺寸每侧取4.5倍土层深度范围,垂直于地震波输入方向土体尺寸每侧取1倍土层深度范围,可保证饱和土体-群桩结构共同作用体系地震反应分析的精度。
Through the numerical calculation, the influence of the lateral remote boundary location in the three-dimensional seismic response analysis of a typical saturated soil-pile group interaction system is analyzed, and the seismic response of the soil and pile group structure changes with the calculation range of the soil layer The law. From the analysis results, we can see that the soil depth along the input direction of seismic waves takes a depth of 4.5 times on each side of the soil and the depth of soil layer perpendicular to each side of the soil in the direction of seismic input can ensure the saturated soil-pile group structure Accuracy of seismic response analysis of interaction system.