[1]郭力群,程玉果,陈亚军,等.内支撑基坑群开挖相互影响的三维数值分析[J].华侨大学学报(自然科学版),2014,35(6):711-716.[doi:10.11830/ISSN.1000-5013.2014.06.0711]
　GUO Li-qun,CHENG Yu-guo,CHEN Ya-jun,et al.3D Numerical Analysis on the Interaction of Group Foundation Pits Supporting with Strut[J].Journal of Huaqiao University(Natural Science),2014,35(6):711-716.[doi:10.11830/ISSN.1000-5013.2014.06.0711]
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内支撑基坑群开挖相互影响的三维数值分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第35卷
期数:
2014年第6期
页码:
711-716
栏目:
出版日期:
2014-11-20

文章信息/Info

Title:
3D Numerical Analysis on the Interaction of Group Foundation Pits Supporting with Strut
文章编号:
1000-5013(2014)06-0711-06
作者:
郭力群1;  程玉果1; 2;  陈亚军1;  徐芳超1
1. 华侨大学 土木工程学院, 福建 厦门 361021;2. 中国建筑东北设计研究院, 辽宁 沈阳 110006
Author(s):
GUO Li-qun1;  CHENG Yu-guo1; 2;  CHEN Ya-jun1;  XU Fang-chao1
1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. China Northeast Architectural Design and Research Institute, Shenyang 110006, China
关键词:
群体基坑;  相互影响;  小应变硬化土模型;  数值分析
Keywords:
group foundation pits;  interaction;  hardening soil model with small strain stiffness model;  numerical analysis
分类号:
TU473
DOI:
10.11830/ISSN.1000-5013.2014.06.0711
文献标志码:
A
摘要:
通过Z-Soil岩土三维分析软件,以小应变硬化土(hardening soil model with small strain stiffness,HSS)模型为基础,建立地连墙与内支撑联合支护的群体基坑开挖的三维数值模型.对基坑土体的的竖向位移以及地连墙的变形和受力进行了分析,讨论了基坑间距的影响.分析结果表明:临坑的开挖使紧邻的坑间土堤沉降增加约1倍,使群坑周边沉降增加约10%;先开挖的基坑支护结构受力、变形增大,后续开挖的基坑的地连墙顶会向先开挖基坑方向产生整体侧移,基坑间距越近,影响越明显.
Abstract:
The three-dimensional numerical model of lined up group foundation pits supported by diaphragm wall and internal strut system were built with Z-Soil geotechnical FEM software based on the hardening soil model with small strain stiffness(HSS)model. The vertical displacement of soil, deformation and stress of the diaphragm wall were analyzed. The impact of pit spacing was also discussed. The analysis results show that because of the excavation of nearby pits, the settlement of embankment between pits is doubled, the settlement increases by about 10% around the pits, and the stress and deformation of the supporting structure in the excavated pit is increase. The top of the diaphragm wall of the subsequent foundation pit move towards the direction of the excavated one. The closer pit spacing leads to the more significant the interactions.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2014-03-10
通信作者: 郭力群(1970-),男,副教授,主要从事基坑工程及桩基工程的研究.E-mail:guoliqun@hqu.edu.cn.
基金项目: 国家自然科学基金资助项目(51208218)
更新日期/Last Update: 2014-11-20