【作者】 吴小涛； 马克生；

【Author】 Wu Xiaotao;Ma Kesheng;Taiyuan University of Technology;

【机构】 太原理工大学；

【摘要】 基于ABAQUS有限元软件模拟分析,通过建立5×5刚柔桩复合地基模型,选取6种不同布桩方案,在三级竖向荷载作用下,对承台沉降数值进行统计分析。结果表明:刚柔桩的结合能很大程度改善纯粹刚性桩沉降的"碟形"分布,使承台沉降更加均匀;在布桩总数不变的情况下,增加刚性桩比例能显著改善承台的差异沉降和平均沉降;当刚性桩所占总桩数的比例超过36%时,承台的差异沉降和平均沉降所受其影响不再显著。更多还原

【Abstract】 Based on ABAQUS finite element analysis software simulation,a model of 5 × 5 rigid-flexible-piles composite foundation is established to have a numerical statistical analysis on the settlement of caps,by six different pile arrangement plans and under the effect of three load levels. Results show that the combination of rigid piles and flexible piles greatly improves the settlement of "dish"distribution with pure rigid pile composite foundation and the settlement of pile caps is more uniform. Under the condition of invariable total number,increasing the proportion of the rigid pile can significantly improve the differential settlement and average settlement. When rigid pile has accounted for about more than 36% of the total number of piles,the differential settlement and average settlement of pile caps are affected unapparently.更多还原