边坡工程中抗滑桩群桩土拱效应的数值分析  

Numerical Analysis of Soil Arching Effect in Pries in the Slope Engineering

作　　者：吴昌将[1] 张子新[1] 

机构地区：[1]同济大学岩土及地下工程教育部重点实验室,同济大学土木工程学院上海200092

出　　处：《地下空间与工程学报》2007年第z1期1305-1309,1333,共6页Chinese Journal of Underground Space and Engineering

摘　　要：土拱效应普遍存在于群桩的各排桩间土体中。采用MSC.marc有限元软件,详细研究了边坡中双排抗滑桩的群桩土拱效应,在同排桩桩间距一定下,分析了排列方式为平行排列和间隔排列桩的土拱效应,以及考虑不同排桩桩间距、不同堆载大小、不同土体性质等对群桩土拱效应的影响,以及前后排桩间土体的土拱效应在不同条件下的变化规律,分析表明,当桩的列间距在3～8倍桩径时,行间距在2～8倍间变化对群桩的土拱效应有明显影响。It is well known that soil arching effect exists in the soil behind piles in different rows.The finite ele- ment analysis software package,MSC.marc,is used to study soil arching effect in double-row piles in the slope and the effect of some factors on the behavior of soil arching effect such as layout of piles,piles spacing,loading,and soil properties in detail.This paper also studied the variation of soil arching effect behind front and back piles based on different condition.It is concluded that variety of piles row spacing ranging from two to eight times of pile diameter has great impact on the soil arching effect in piles.

关 键 词：抗滑桩 桩间距 土拱效应 数值分析 荷载承担比 

分 类 号：TU473.1[建筑科学—结构工程]