基坑斜直交替支护桩的影响因素研究
Research on influencing factors of inclined and straight alternating support piles in foundation pit
汪东林 1汝露军1
作者信息
- 1. 安徽建筑大学 土木工程学院,合肥 230601
- 折叠
摘要
为了研究基坑斜直交替支护桩的影响因素,运用岩土工程有限元软件MIDAS GTS NX建立基坑模型,根据斜直交替桩支护的桩-土共同作用抗倾覆工作机理,探究了斜直桩的桩长、桩头位置和支护结构的空间刚架效应对支护效果的影响.结果表明,在控制变形方面,斜桩发挥着更加重要的作用,桩头间距为2m时坑边桩体最大水平位移比桩头间距为0m时减小了13.54%,提高支护结构的整体空间刚架效应能够显著提高斜直桩支护的支护效果,进一步完善支护设计.该研究可为斜直交替桩支护的作用机理研究和应用提供一定参考.
Abstract
This paper seeks on investigating the influencing factors of inclined and straight alternating supporting piles in foundation pit.The study involves establishing a foundation pit model by using geotechnical engineering finite element software MIDAS GTS NX,and exploring the influence of patial rigid frame of the pile length,head position and supporting structure on the support effect of the inclined straight pile according to the working mechanism of pile-soil joint action against overturning of inclined straight alternating pile support.The results show that the inclined pile plays a more important role in controlling deformation.When the pile head spacing is 2 m,the maximum horizontal displacement of the pile body at the edge of the pit reduces by 13.54%compared with the pile head spacing by 0 m.The im-provement of overall spatial rigid frame effect of the support structure can significantly improve the support effect of the inclined straight pile suppor and perfect the support design further.This research can provide some reference for the research of the mechanism and application of the alternating inclined and straight pile support.
关键词
基坑/斜直桩支护/桩长/桩头位置/空间刚架效应Key words
foundation pit/inclined straight pile support/pile length/pile head position/spatial rigid frame effect引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据