[1]黄山景,肖朝昀,涂兵雄,等.严重偏压作用下非对称基坑的变形及受力特性[J].华侨大学学报(自然科学版),2021,42(1):22-29.[doi:10.11830/ISSN.1000-5013.202006017]
　HUANG Shanjing,XIAO Zhaoyun,TU Bingxiong,et al.Deformation and Stress Characteristics of Asymmetric Excavation Under Severe Asymmetric Loading[J].Journal of Huaqiao University(Natural Science),2021,42(1):22-29.[doi:10.11830/ISSN.1000-5013.202006017]
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严重偏压作用下非对称基坑的变形及受力特性()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第42卷
期数:
2021年第1期
页码:
22-29
栏目:
出版日期:
2021-01-20

文章信息/Info

Title:
Deformation and Stress Characteristics of Asymmetric Excavation Under Severe Asymmetric Loading
文章编号:
1000-5013(2021)01-0022-08
作者:
黄山景;  肖朝昀;  涂兵雄;  蔡奇鹏;  张强
华侨大学 土木工程学院, 福建 厦门 361021
Author(s):
HUANG Shanjing;  XIAO Zhaoyun;  TU Bingxiong; CAI Qipeng;  ZHANG Qiang
College of Civil Engineering, Huaqiao University, Xiamen 361021, China
关键词:
非对称基坑;  现场监测;  变形特性;  内力响应
Keywords:
asymmetric excavation;  field monitoring;  deformation characteristics;  force response
分类号:
TU43
DOI:
10.11830/ISSN.1000-5013.202006017
文献标志码:
A
摘要:
为了研究严重偏压作用下的非对称基坑变形及受力特性,依托福建省厦门市某非对称工作井基坑工程,通过现场监测方法分析非对称基坑在严重偏压作用下围护桩变形特性与支护内力响应.结果表明:在严重偏压作用下,非对称基坑围护桩桩顶整体产生旋转变形,桩身将产生两个方向的水平位移,切向水平位移存在悬臂状和“凸肚”状两种不同的变形模式;超挖、降雨等恶劣情况将严重影响非对称基坑围护结构变形及支护受力;设计、施工和监测应充分考虑基坑的非对称特性,单一考虑围护桩法向变形不利于工程风险控制.
Abstract:
In order to study the deformation and stress characteristics of asymmetric excavation under severe asymmetric loading, based on an asymmetric excavation project in Xiamen, Fujian, the deformation characteristics of retaining piles and the force response of supporting structures of asymmetric excavation are analyzed by field monitoring method. The results show that under asymmetric loading, the whole torsional deformation occurs on the tops of the asymmetric excavation, the horizontal displacement in two directions occurs in the retaining piles. There are two different deformation modes in tangential horizontal displacement: cantilever type and convex type. Over-excavation, rainfall and other bad conditions will seriously affect the deformation of the retaining structures and the force of the supporting structures of asymmetric excavation. Asymmetrical characteristics of the excavation should be fully considered in design, construction and monitoring. Only considering the normal deformation of retaining piles is not conducive to the project risk control.

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备注/Memo

备注/Memo:
收稿日期: 2020-06-11
通信作者: 肖朝昀(1979-),男,教授,博士,主要从事隧道与地下结构、深基坑工程施工环境效应及对策、施工监测与控制技术、岩土数值计算及环境岩土工程的研究.E-mail:zyxiao@hqu.edu.cn.
基金项目: 国家自然科学基金资助项目(51778249); 华侨大学研究生科研创新能力培育计划项目(18013086015)
更新日期/Last Update: 2021-01-20