根据桩周土体应变场特点对桩周地基进行了区域划分。
The area of the pile foundation is measured According to the characteristic of the soil strain field aroud a pile.
用整体动力有限元方法分析桩周土及桩间距对桩基地震反应的影响。
The influence of seismic response on piles due to pile-surrounding soil and spacing between adjacent piles was studied with the method of whole dynamic finite element under the seismic condition.
考虑桩周土体及桩–土接触的非线性，建立了空间轴对称有限元模型；
The spatial axisymmetric finite element model is established considering the nonlinear of the soil and the interface between pile and soil.
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