摘要
通过数值计算对不同桩间距的DX桩群桩进行了分析研究。结果表明:DX桩的群桩效应随着桩间距的减小而逐渐明显,间距为6倍桩径的群桩极限承载力是间距为3倍桩径的群桩极限承载力的1.32倍;群桩间距由3倍桩径增大为6倍桩径时,群桩效应系数由0.59增大为0.78;群桩间土体沉降的最大值发生在两扩盘中间位置处,且随着桩间距的增大而减小。
This paper analyzes 4 types of group-pile which contains 4 piles with spacing 1.5D, 2D, 2.5D and 3D（D is diameter of the bearing plate）by numerical analysis, and draws some conclusions. The main conclusions are： group pile effect of DX pile increases sharply when pile spacing decreases;the bearing capacity of 3D spacing group-pile is 1.32 times larger than that of 1.5D spacing group-pile;effect coefficient of group-pile increases from 0.59 to 0.78 when spacing increases from 1.5D to 3D ; the maximum value of settlement of soil among group-pile occurs between two bearing plates, and it decreases when the spacing of pile increases.
出处
《中国工程科学》
北大核心
2012年第1期51-59,共9页
Strategic Study of CAE
关键词
DX桩
群桩
沉降
数值分析
DX pile
group-pile
settlement
numerical analysis
