«上一篇/Previous Article|本期目录/Table of Contents|下一篇/Next Article»

《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^1,2,顾晓强^1,2,高广运^1,2,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-tuo^1,2, GU Xiao-qiang^1,2, GAO Guang-yun^1,2, 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.

参考文献/References:

[1] 王卫东,王浩然,徐中华.上海地区板式支护体系基坑变形预测简化计算方法[J].岩土工程学报,2012,34(10):1792-1800.
WANG Wei-dong,WANG Hao-ran,XU Zhong-hua.Simplified Method of Deformation Prediction for Excavations Retained by Embedded Walls in Shanghai Soft Soil[J].Chinese Journal of Geotechnical Engineering,2012,34(10):1792-1800.
[2]BURLAND J B.Small Is Beautiful — The Stiffness of Soils at Small Strains[J].Canadian Geotechnical Journal,1989,26(4):499-516.
[3]ATKINSON J H,SALLFORS G.Experimental Determination of Stress-strain-time Characteristics in Laboratory and In-situ Tests[C]//SMFE.Proceedings of the 10th European Conference on Soil Mechanics and Foundation Engineering.Rotterdam:Balkema A A,1991:915-956.
[4]SCHANZ T,VERMEER P A,BONNIER P G.The Hardening Soil Model:Formulation and Verification[C]//SMFE.Proceedings of the International Symposium.Amsterdam:Balkema A A,1999:281-296.
[5]BENZ T.Small-strain Stiffness of Soils and Its Numerical Consequences[D].Stuttgart:University of Stuttgart,2007.
[6]BENZ T,SCHWAB R,VERMEER P.Small-strain Stiffness in Geotechnical Analyses[J].Bautechnik Engineering,2009,86(S1):16-27.
[7]SCHWEIGER H F,VERMEER P A,WEHNERT M.On the Design of Deep Excavations Based on Finite Element Analysis[J].Geomechanics and Tunnelling,2009,2(4):333-344.
[8]王卫东,王浩然,徐中华.基坑开挖数值分析中土体硬化模型参数的试验研究[J].岩土力学,2012,33(8):2283-2290.
WANG Wei-dong,WANG Hao-ran,XU Zhong-hua.Experimental Study of Parameters of Hardening Soil Model for Numerical Analysis of Excavations of Foundation Pits[J].Rock and Soil Mechanics,2012,33(8):2283-2290.
[9]李 青,徐中华,王卫东,等.上海典型黏土小应变剪切模量现场和室内试验研究[J].岩土力学,2016,37(11):3263-3269.
LI Qing,XU Zhong-hua,WANG Wei-dong,et al.Field and Laboratory Measurements on Shear Modulus of Typical Shanghai Clay at Small Strain[J].Rock and Soil Mechanics,2016,37(11):3263-3269.
[10]梁发云,贾亚杰,丁钰津,等.上海地区软土HSS 模型参数的试验研究[J].岩土工程学报,2017,39(2):269-278.
LIANG Fa-yun,JIA Ya-jie,DING Yu-jin,et al.Experimental Study on Parameters of HSS Model for Soft Soils in Shanghai[J].Chinese Journal of Geotechnical Engineering,2017,39(2):269-278.
[11]张 娇.上海软土小应变特性及其在基坑变形分析中的应用[D].上海:同济大学,2017.
ZHANG Jiao.Small Strain Stiffness Properties of Shanghai Soft Soils and Application in Deformation Analysis of Deep Excavations[D].Shanghai:Tongji University,2017.
[12]顾晓强,陆路通,李雄威,等.土体小应变刚度特性的试验研究[J].同济大学学报:自然科学版,2018,46(3):312-317.
GU Xiao-qiang,LU Lu-tong,LI Xiong-wei,et al.Experimental Study of Small Strain Stiffness Properties of Soil[J].Journal of Tongji University:Natural Science,2018,46(3):312-317.
[13]陆路通.上海土体小应变特性的试验研究及其在基坑工程中的应用[D].上海:同济大学,2018.
LU Lu-tong.Experimental Study on the Small Strain Properties of Soil in Shanghai and Its Application in Excavation[D].Shanghai:Tongji University,2018.
[14]谢东武,管 飞,丁文其.小应变硬化土模型参数的确定与敏感性分析[J].地震工程学报,2017,39(5):898-906.
XIE Dong-wu,GUAN Fei,DING Wen-qi.Determination and Sensitivity Analysis of the Parameters of Hardening Soil Model with Small Strain Stiffness[J].China Earthquake Engineering Journal,2017,39(5):898-906.
[15]尹 骥.小应变硬化土模型在上海地区深基坑工程中的应用[J].岩土工程学报,2010,32(增1):166-172.
YIN Ji.Application of Hardening Soil Model with Small Strain Stiffness in Deep Foundation Pits in Shanghai[J].Chinese Journal of Geotechnical Engineering,2010,32(S1):166-172.
[16]陈少杰,顾晓强,高广运.土体小应变剪切模量的现场和室内试验对比及工程应用[J].岩土工程学报,2019,41(增2):133-136.
CHEN Shao-jie,GU Xiao-qiang,GAO Guang-yun.Comparison and Application of Small Strain Shear Moduli from Field and Laboratory Measurements[J].Chinese Journal of Geotechnical Engineering,2019,41(S2):133-136.
[17]顾晓强,吴瑞拓,梁发云,等.上海土体小应变硬化模型整套参数取值方法及工程验证[J].岩土力学,2021,42(3):833-845.
GU Xiao-qiang,WU Rui-tuo,LIANG Fa-yun,et al.On HSS Model Parameters for Shanghai Soils with Engineering Verification[J].Rock and Soil Mechanics,2021,42(3):833-845.
[18]TAN Y,WEI B,DIAO Y P,et al.Spatial Corner Effects of Long and Narrow Multipropped Deep Excavations in Shanghai Soft Clay[J].Journal of Performance of Constructed Facilities,2014,28(4):04014015.
[19]DG/TJ 08-61—2018,基坑工程技术标准[S].
DG/TJ 08-61—2018,Technical Code for Excavation Engineering[S].
[20]OU C Y,HSIEH P G,CHIOU D C.Characteristics of Ground Surface Settlement During Excavation[J].Canadian Geotechnical Journal,1993,30(5):758-767.
[21]HSIEH P G,OU C Y.Shape of Ground Surface Settlement Profiles Caused by Excavation[J].Canadian Geotechnical Journal,1998,35(6):1004-1017.
[22]王卫东,徐中华.预估深基坑开挖对周边建筑物影响的简化分析方法[J].岩土工程学报,2010,32(增1):32-38.
WANG Wei-dong,XU Zhong-hua.Simplified Analysis Method for Evaluating Excavation-induced Damage of Adjacent Buildings[J].Chinese Journal of Geotechnical Engineering,2010,32(S1):32-38.

相似文献/References:

[1]孙泽信,王永琛,卢彦竹,等.混合地层盾构超深接收井开挖安全监测分析[J].建筑科学与工程学报,2023,40(04):144.[doi:10.19815/j.jace.2021.11049]
　SUN Zexin,WANG Yongchen,LU Yanzhu,et al.Safety monitoring and analysis of shield ultra-deep receiving well excavation in mixed stratum[J].Journal of Architecture and Civil Engineering,2023,40(06):144.[doi:10.19815/j.jace.2021.11049]

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。

常用功能

更新日期/Last Update: 2021-11-01