[1]王永锋,杜 军,王利民,等.基坑被动区加固对基坑支护体系变形和桩后土体沉降的影响[J].华南地震,2021,41(04):121-127.[doi:10.13512/j.hndz.2021.04.17]
 WANG Yongfeng,DU Jun,WANG Limin,et al.Effect of Passive Zone Reinforcement on Deformation of Foundation Pit Supporting System and Soil Settlement Behind Piles[J].,2021,41(04):121-127.[doi:10.13512/j.hndz.2021.04.17]
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基坑被动区加固对基坑支护体系变形和桩后土体沉降的影响()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
41
期数:
2021年04期
页码:
121-127
栏目:
土木工程防震减灾
出版日期:
2021-12-15

文章信息/Info

Title:
Effect of Passive Zone Reinforcement on Deformation of Foundation Pit Supporting System and Soil Settlement Behind Piles
文章编号:
1001-8662(2021)04-0121-07
作者:
王永锋杜 军王利民郑志聪鲜东云虞亚平郭逢波孔剑捷
中国建筑第五工程局有限公司,广东 珠海 519000
Author(s):
WANG YongfengDU JunWANG LiminZHENG ZhicongXIAN DongyunYU YapingGUO FengboKONG Jianjie
China Construction Fifth Engineering Bureau Co., Ltd., Zhuhai 519000, China
关键词:
软土被动区加固基坑支护加固深度加固宽度
Keywords:
Soft soilPassive zone reinforcementFoundation pit supportReinforcement depthReinforcement width
分类号:
TU753
DOI:
10.13512/j.hndz.2021.04.17
文献标志码:
A
摘要:
深厚软土地区基坑常用基坑被动区加固的方法来控制支护体系变形。以珠海深厚软土地区某基坑工程为例,采用FLAC3D软件,建立了基坑工程分析模型,计算分析了被动区土体加固深度及加固宽度对基坑支护体系变形和桩后土体沉降的影响。计算结果表明,随着被动区加固深度和加固宽度的增加,桩身位移量和桩后土体沉降量均逐渐减小;桩身位移量和土体沉降量的减幅随着加固深度和加固宽度的增加而逐渐减小,故加固区存在最优加固深度和加固宽度,分别为10m和12m左右;桩后土体沉降影响区域范围为2H,坑外地表最大沉降点在距围护桩0.5H处。
Abstract:
The passive reinforcement method of foundation pit in deep soft soil area is often used to control the deformation of supporting system. In this paper,taking a foundation pit project in deep soft soil area of Zhuhai as an example, using FLAC3D software, the foundation pit engineering analysis model is established, and the influence of reinforcement depth and reinforcement width in passive area on the deformation of foundation pit supporting system and soil settlement behind piles is calculated and analyzed. The results show that with the increase of reinforcement depth and reinforcement width in passive zone, the displacement of pile and the settlement of soil behind pile decrease gradually. The reduction of pile displacement and soil settlement decreases gradually with the increase of reinforcement depth and reinforcement width, so there is an optimal reinforcement depth and reinforcement width, which are about 10 m and 12 m, respectively. The influence area of soil settlement behind the pile is 2 H, and the maximum surface settlement point outside the pit is 0.5 H away from the retaining pile.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2021-05-01
基金项目:国家自然科学基金项目(51678352)
作者简介:王永锋(1977-),男,高级工程师,学士,主要从事土木工程管理及土木工程施工方面研究。E-mail:13527257618@163.com
通信作者:杜军(1997-),男,助理工程师,学士,主要从事土木工程管理及土木工程施工方面研究。E-mail:1043381513@qq.com
更新日期/Last Update: 2021-12-15