[1]王 建,陈洪波,何书通,等.基坑开挖对基坑及围护结构稳定性影响分析[J].江苏水利,2021,(10):20-23.
　WANG Jian,CHEN Hongbo,HE Shutong,et al.Analysis on the influence of foundation pit excavation on the stability of foundation pit and retaining structure[J].JIANGSU WATER RESOURCES,2021,(10):20-23.
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基坑开挖对基坑及围护结构稳定性影响分析()
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《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2021年10期
页码:
20-23
栏目:
水利工程建设
出版日期:
2021-12-15

文章信息/Info

Title:
Analysis on the influence of foundation pit excavation on the stability of foundation pit and retaining structure
文章编号:
1007-7839(2021)10-0020-04
作者:
王 建1; 4; 陈洪波2; 5; 何书通3; 5; 常学文6
(1.江苏省水利工程建设局,江苏 南京 210029; 2.江苏省水文水资源勘测局常州分局,江苏 常州 213001; 3.江苏省水利防汛物资储备中心,江苏 南京 210029; 4.江苏省新孟河枢纽工程建管局,江苏 常州 213022; 5.江苏省太湖治理工程建设管理局,江苏 常州 213022; 6.河海大学地球科学与工程学院,江苏 南京 211100)
Author(s):
WANG Jian1; 4; CHEN Hongbo2; 5; HE Shutong3; 5; CHANG Xuewen6
(1.Jiangsu Water Conservancy Engineering Construction Bureau,Nanjing 210029,China;2.Changzhou Hydrology and Water Resources Investigation Bureau of Jiangsu Province,Changzhou 213001,China;3.Jiangsu Provincial Water Conservancy and Flood Control Material Reserve Center,Nanjing 210029,China;4.Jiangsu Xinmeng River Hub Project Construction Bureau,Changzhou 213022,China;5.Jiangsu Province Taihu Treatment Project Construction Administration,Changzhou 213022,China;6.School of Earth Science......)
关键词:
基坑开挖;  数值模拟;  土体变形;  围护结构变形
Keywords:
foundation pit excavation;  numerical simulation;  soil deformation;  deformation of retaining structure
分类号:
TU942
文献标志码:
B
摘要:
在基坑工程建设中,土体的变形会给周围环境及建筑物造成严重破坏,甚至还会直接或间接的给人类生活和生存环境带来不利影响。本文通过Plaxis 2d建立基坑平面应变模型,利用有限元极限平衡法来计算基坑开挖过程中土体的变形,并对变形过程中土体的总主应力、垂直位移和水平位移以及围护结构的变形进行分析,评价基坑和围护结构的稳定性。计算结果表明,土体竖直位移值在-1.25～14.74 mm范围内,水平位移值在-2.65～2.84 mm范围内,围护结构水平位移变化在1～3 mm范围内,基坑是稳定的。
Abstract:
In the foundation pit construction,the deformation of soil could cause serious damage to the surrounding environment and buildings,and even directly or indirectly bring adverse effects on human life and living environment. The plane strain model of foundation pit was established by Plaxis 2d,and the deformation of soil in the process of foundation pit excavation was calculated by the finite element limit equilibrium method. The total principal stress,vertical displacement and horizontal displacement of soil in the deformation process and the deformation of retaining structure were analyzed to evaluate the stability of foundation pit and retaining structure. The calculation results showed that the vertical displacement of soil was in the range of -1.25～14.74 mm,the horizontal displacement of soil was in the range of -2.65～2.84 mm,the horizontal displacement of retaining structure was in the range of 1～3 mm,and the foundation pit was stable.

参考文献/References:

[1] 陈立敏. 基坑开挖对邻近建筑及地铁隧道的影响研究[J]. 山西建筑,2021,47(1):55-56.
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[6] 刘拴龙,张书杰. 深基坑地连墙在开挖过程中的变形趋势[J]. 港工技术,2017,54(5):74-76.
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[8] 李善豪. 深基坑土钉支护中分级放坡的作用[D]. 邯郸:河北工程大学,2017.

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备注/Memo

备注/Memo:
收稿日期:2021-04-29
作者简介:王建(1970—),男,三级调研员,主要从事水利重点工程建设管理工作。E-mail:1120805002@qq.com
通信作者:常学文(1996—),男,硕士研究生,主要从事地质体稳定性研究工作。E-mail:431960252@qq.com
更新日期/Last Update: 2021-11-17