|Table of Contents|

Analysis of Deep Excavation Deformation of Shanghai Metro Station Using HSS Model(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2021年06期
Page:
64-70
Research Field:
软土基坑设计与变形控制
Publishing date:

Info

Title:
Analysis of Deep Excavation Deformation of Shanghai Metro Station Using HSS Model
Author(s):
WU Rui-tuo1; 2;  GU Xiao-qiang1; 2;  GAO Guang-yun1; 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)
Keywords:
excavation engineering;  deformation analysis;  three-dimensional numerical simulation;  HSS model
PACS:
TU437.1
DOI:
10.19815/j.jace.2021.08055
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.

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.

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Last Update: 2021-11-01