Parameter back-analysis of hardening soil model for granite residual soil and its engineering applications
In recent years, construction works near the operating metro tunnel in granite residual soil have been gradually increasing, and the impact of these construction works on the safety of shield tunnel should not be ignored. Finite element method is an effective method to evaluate the influence of adj...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717
2022-04-01
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| Series: | Rock and Soil Mechanics |
| Subjects: | |
| Online Access: | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6062 |
| _version_ | 1818471136542851072 |
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| author | ZHU Min CHEN Xiang-sheng ZHANG Guo-tao PANG Xiao-chao SU Dong LIU Ji-qiang |
| author_facet | ZHU Min CHEN Xiang-sheng ZHANG Guo-tao PANG Xiao-chao SU Dong LIU Ji-qiang |
| author_sort | ZHU Min |
| collection | DOAJ |
| description | In recent years, construction works near the operating metro tunnel in granite residual soil have been gradually increasing, and the impact of these construction works on the safety of shield tunnel should not be ignored. Finite element method is an effective method to evaluate the influence of adjacent construction on shield tunnel, but its reliability highly depends on the reasonable selection of soil constitutive model and parameters. In this paper, the current situation of parameter selection of hardening soil model for granite residual soil is firstly reviewed. Then a back-analysis method for determining the parameters of granite residual soil based on the self-boring pressuremeter test (SBPMT) is proposed. Finally, the obtained back-analysis parameters are applied to the engineering case of foundation pit excavated overpass existing shield tunnel for method verification, and more reasonable values of parameters of hardening soil model for granite residual soil are determined. The results show that the strength parameters of hardening soil model for granite residual soil can be determined by laboratory tests, and the stiffness parameters of E50ref, Eoedref and Eurref are the key parameters for the back-analysis. The ratio of E50ref: Eoedref: Eurref from 1:1:3 to 1:1:5 is suitable for engineering practice, and the value of E50ref ranges from 36 MPa to 43 MPa according to different ratios. |
| first_indexed | 2024-04-13T21:46:44Z |
| format | Article |
| id | doaj.art-e34c64e6a38e4c7c9f04c1ecd7b68877 |
| institution | Directory Open Access Journal |
| issn | 1000-7598 |
| language | English |
| last_indexed | 2024-04-13T21:46:44Z |
| publishDate | 2022-04-01 |
| publisher | SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717 |
| record_format | Article |
| series | Rock and Soil Mechanics |
| spelling | doaj.art-e34c64e6a38e4c7c9f04c1ecd7b688772022-12-22T02:28:34ZengSCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717Rock and Soil Mechanics1000-75982022-04-014341061107210.16285/j.rsm.2021.6062Parameter back-analysis of hardening soil model for granite residual soil and its engineering applicationsZHU Min0CHEN Xiang-sheng1ZHANG Guo-tao2 PANG Xiao-chao3SU Dong4LIU Ji-qiang51. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China 2. Key Laboratory of Coastal Urban Resilient Infrastructures of Ministry of Education, Shenzhen University, Shenzhen, Guangdong 518060, China 1. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China 2. Key Laboratory of Coastal Urban Resilient Infrastructures of Ministry of Education, Shenzhen University, Shenzhen, Guangdong 518060, China 1. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China 2. Key Laboratory of Coastal Urban Resilient Infrastructures of Ministry of Education, Shenzhen University, Shenzhen, Guangdong 518060, China China Academy of Railway Sciences (Shenzhen) Research and Design Institute Co., Ltd., Shenzhen, Guangdong 518060, China1. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China 2. Key Laboratory of Coastal Urban Resilient Infrastructures of Ministry of Education, Shenzhen University, Shenzhen, Guangdong 518060, China China Railway Southern Investment Group Co., Ltd., Shenzhen, Guangdong 518060, China In recent years, construction works near the operating metro tunnel in granite residual soil have been gradually increasing, and the impact of these construction works on the safety of shield tunnel should not be ignored. Finite element method is an effective method to evaluate the influence of adjacent construction on shield tunnel, but its reliability highly depends on the reasonable selection of soil constitutive model and parameters. In this paper, the current situation of parameter selection of hardening soil model for granite residual soil is firstly reviewed. Then a back-analysis method for determining the parameters of granite residual soil based on the self-boring pressuremeter test (SBPMT) is proposed. Finally, the obtained back-analysis parameters are applied to the engineering case of foundation pit excavated overpass existing shield tunnel for method verification, and more reasonable values of parameters of hardening soil model for granite residual soil are determined. The results show that the strength parameters of hardening soil model for granite residual soil can be determined by laboratory tests, and the stiffness parameters of E50ref, Eoedref and Eurref are the key parameters for the back-analysis. The ratio of E50ref: Eoedref: Eurref from 1:1:3 to 1:1:5 is suitable for engineering practice, and the value of E50ref ranges from 36 MPa to 43 MPa according to different ratios.http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6062granite residual soilself-boring pressuremeter testhardening soil modelparameter back-analysisfoundation excavationshield tunnel |
| spellingShingle | ZHU Min CHEN Xiang-sheng ZHANG Guo-tao PANG Xiao-chao SU Dong LIU Ji-qiang Parameter back-analysis of hardening soil model for granite residual soil and its engineering applications Rock and Soil Mechanics granite residual soil self-boring pressuremeter test hardening soil model parameter back-analysis foundation excavation shield tunnel |
| title | Parameter back-analysis of hardening soil model for granite residual soil and its engineering applications |
| title_full | Parameter back-analysis of hardening soil model for granite residual soil and its engineering applications |
| title_fullStr | Parameter back-analysis of hardening soil model for granite residual soil and its engineering applications |
| title_full_unstemmed | Parameter back-analysis of hardening soil model for granite residual soil and its engineering applications |
| title_short | Parameter back-analysis of hardening soil model for granite residual soil and its engineering applications |
| title_sort | parameter back analysis of hardening soil model for granite residual soil and its engineering applications |
| topic | granite residual soil self-boring pressuremeter test hardening soil model parameter back-analysis foundation excavation shield tunnel |
| url | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6062 |
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