- 摘 要
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苗云东1,夏力农2,3,陆玮1,田浩1,苗伟波4
(1 云南省建筑工程设计院, 昆明 650041; 2 湘潭大学土木工程与力学学院, 湘潭 411105;3 长沙学院土木工程系, 长沙 410003; 4 云南建工集团第十建筑有限公司, 昆明 650041)
[摘要]通过在砂土地基中使地下水位下降引发地基土沉降条件下的3×3竖直群桩复合地基模型试验,研究了地基土沉降对在役复合地基基础沉降、桩土应力比和桩身轴力的影响规律。试验结果表明:随着地基土沉降的增加,基础的沉降加大,桩土应力比提高,桩身轴力有所增大。
[关键词]地基土沉降; 地下水位下降; 在役复合地基; 性状; 模型试验
中图分类号:TU478文献标识码:A文章编号:1002848X(2013)12008104
Research on model experiment of effect of ground subsidence on behavior of
existing composite foundation
Miao Yundong1, Xia Linong2,3, Lu Wei1, Tian Hao1, Miao Weibo4
Architecture Design Institute, Kunming 650041, China; 2 College of Civil Engineering and Mechanics,
Xiangtan University, Xiangtan 411105, China;3 Civil Engineering Department, Changsha University, Changsha 410003,
China; 4 Yunnan Construction Engineering Group No.10 Construction Co., Ltd., Kunming 650041, China)
Abstract:Model experiment on 3×3 group piles composite foundation in sand foundation with ground subsidence caused by the groundwater level lowering was conducted. The influence of ground subsidence on the settlement, pilesoil stress ratio and axial force of piles of existing composite foundation were studied. Results show that settlement, pilesoil stress ratio and axial forces of piles increase gradually along with the increasing of ground subsidence.
Keywords:ground subsidence; groundwater level lowering; existing composite foundation; behavior; model experiment
作者简介:苗云东,硕士,助理工程师,Email:miaoyundong@126.com。
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