|本期目录/Table of Contents|

[1]吴瑞拓,顾晓强,高广运,等.基于HSS模型的上海地铁深基坑开挖变形分析[J].建筑科学与工程学报,2021,38(06):64-70.[doi:10.19815/j.jace.2021.08055]
 WU Rui-tuo,GU Xiao-qiang,GAO Guang-yun,et al.Analysis of Deep Excavation Deformation of Shanghai Metro Station Using HSS Model[J].Journal of Architecture and Civil Engineering,2021,38(06):64-70.[doi:10.19815/j.jace.2021.08055]
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基于HSS模型的上海地铁深基坑开挖变形分析(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
38卷
期数:
2021年06期
页码:
64-70
栏目:
软土基坑设计与变形控制
出版日期:
2021-11-05

文章信息/Info

Title:
Analysis of Deep Excavation Deformation of Shanghai Metro Station Using HSS Model
文章编号:
1673-2049(2021)06-0064-07
作者:
吴瑞拓12顾晓强12高广运12樊 烽3张 科3
(1. 同济大学 地下建筑与工程系,上海 200092; 2. 同济大学 岩土及地下工程教育部重点实验室,上海 200092; 3. 浙江祥生建设工程有限公司,浙江 诸暨 311800)
Author(s):
WU Rui-tuo12 GU Xiao-qiang12 GAO Guang-yun12 FAN Feng3 ZHANG Ke3
(1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 3. Zhejiang Xiangsheng Construction Engineering Co., Ltd., Zhuji 311800, Zhejiang, China)
关键词:
基坑工程 变形分析 三维数值模拟 HSS模型
Keywords:
excavation engineering deformation analysis three-dimensional numerical simulation HSS model
分类号:
TU437.1
DOI:
10.19815/j.jace.2021.08055
文献标志码:
A
摘要:
为研究上海软土地区地铁深基坑开挖的变形性状,选取上海地区一典型软土地铁深基坑,基于土体小应变硬化模型(HSS模型)和相应的模型参数,采用PLAXIS 3D软件对该基坑的开挖过程进行了三维有限元数值模拟,并结合现场监测的数据对基坑围护结构的侧移和坑外地表沉降进行了对比。结果表明:使用HSS模型和合适的模型参数可以有效地模拟基坑开挖过程中的变形性状,实测结果与有限元分析结果相吻合,具有很好的工程实用价值; 该上海地铁深基坑的最大地表沉降与围护结构最大侧移间的关系符合上海地区最大地表沉降与围护结构最大侧移间的统计关系; 围护结构的最大侧移深度发生在基坑的开挖面处; 长窄型地铁深基坑仍存在较明显的空间效应,基坑长边中部的变形大于基坑角部,在长窄型基坑的设计和施工中应采取针对性措施。
Abstract:
To analyze the deformation of the metro station deep excavation in Shanghai, the excavation process of a typical metro station in soft soil area was numerically simulated by using PLAXIS 3D with the small strain hardening model(HSS model)of soil and appropriated model parameters. The horizontal displacements of retaining structure and the settlements of ground surface behind walls were compared through the field monitoring data. The results show that the deformation in the excavation can be effectively simulated by the HSS model with appropriate model parameters. The simulated results are consistent with the measured results, which has a good engineering practical value. The relationship between the maximum ground settlement and maximum horizontal displacement of the retaining structure agrees well with the measurement statistics in Shanghai. The maximum horizontal displacement of the retaining structure usually occurs near the excavation surface. The long and narrow shape of the metro station deep excavation has an obvious space effect that the deformation near the middle span of pit is larger than that near the corner, which should be carefully considered in the design and construction of long and narrow metro station excavation.

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相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2021-08-01
基金项目:国家自然科学基金项目(52178344,51822809)
作者简介:吴瑞拓(1997-),男,江西抚州人,工学硕士研究生,E-mail:wuruituo@tongji.edu.cn。
通信作者:顾晓强(1981-),男,浙江桐乡人,教授,博士研究生导师,工学博士,E-mail:guxiaoqiang@tongji.edu.cn。
更新日期/Last Update: 2021-11-01