水利水电科技进展2018，Vol.38Issue(4)：75-80,6.DOI:10.3880/j.issn.1006-7647.2018.04.013
强夯荷载作用下地基竖向位移数值分析
Numerical analysis of vertical displacement of foundation under dynamic compaction load
摘要
Abstract
In order to reflect the variation characteristics of the vertical displacement of foundation under dynamic compaction load,the formula for the peak value of the equivalent contact quasi-static force is derived based on the principle of work and power.The numerical model of dynamic compaction is established by the finite element software ANSYS/LS-DYNA,and the dynamic compaction load is simplified to triangular impact load.The settlement calculation method is verified by an actual project of which the soft soil foundation was filled by dynamic compaction in Nantong.The calculation results show that the ratio of the vertical volume variation to the total volume change of the foundation calculated by the proposed method is close to the measured value,and the settlement calculated by the proportion of volume variation representing the energy distribution coefficient agrees well with the measured value.Therefore,the calculation method of settlement after tamping is applicable to dredger fill soft soil foundation.关键词
冲填软土/地基沉降/强夯/等效接触拟静力/数值模拟Key words
dredger fill soft soil/foundation settlement/dynamic compaction/equivalent contact quasi-static force/numerical simulation分类
建筑与水利引用本文复制引用
范文超,蔡新,徐宝明,蔡锐,张添烨..强夯荷载作用下地基竖向位移数值分析[J].水利水电科技进展,2018,38(4):75-80,6.基金项目
水利部公益性行业科研专项(1261430210302) （1261430210302）
