Numerical simulation and analysis on the mechanical responses of the urban existing subway tunnel during the rising groundwater
In this paper, a numerical method of the rising groundwater level is presented through an elastoplastic constitutive model for the unsaturated soil and a numerical realization method for the rising groundwater level. A model test of the rising groundwater level is conducted to validate the rationali...
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| Veröffentlicht in: | Tunnelling and underground space technology 2020-04, Vol.98, p.103297, Article 103297 |
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| container_title | Tunnelling and underground space technology |
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| creator | Lu, Dechun Li, Xiaoqiang Du, Xiuli Lin, Qingtao Gong, Qiuming |
| description | In this paper, a numerical method of the rising groundwater level is presented through an elastoplastic constitutive model for the unsaturated soil and a numerical realization method for the rising groundwater level. A model test of the rising groundwater level is conducted to validate the rationality of the presented numerical method. Taking an interval subway tunnel in Beijing as the background, a numerical simulation with a homogeneous soil layer, which contians the existing tunnel, is conducted according to the presented numerical method of the rising groundwater level. Based on the numerical simulation results, the variations of the ground saturation, the ground stress state, and the ground vertical deformation under the condition of the rising groundwater level are studied through a homogeneous soil layer, and the normal contact pressure on the outer surface of the lining, the radial deformation, the bending moment, the hoop thrust, and the shear force of the lining under the condition of the rising groundwater level are analyzed through a homogeneous soil layer with the existing tunnel. |
| doi_str_mv | 10.1016/j.tust.2020.103297 |
| format | Article |
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A model test of the rising groundwater level is conducted to validate the rationality of the presented numerical method. Taking an interval subway tunnel in Beijing as the background, a numerical simulation with a homogeneous soil layer, which contians the existing tunnel, is conducted according to the presented numerical method of the rising groundwater level. Based on the numerical simulation results, the variations of the ground saturation, the ground stress state, and the ground vertical deformation under the condition of the rising groundwater level are studied through a homogeneous soil layer, and the normal contact pressure on the outer surface of the lining, the radial deformation, the bending moment, the hoop thrust, and the shear force of the lining under the condition of the rising groundwater level are analyzed through a homogeneous soil layer with the existing tunnel.</description><identifier>ISSN: 0886-7798</identifier><identifier>EISSN: 1878-4364</identifier><identifier>DOI: 10.1016/j.tust.2020.103297</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Bending moments ; Computer simulation ; Constitutive models ; Contact pressure ; Deformation ; Elastoplasticity ; Existing tunnel ; Groundwater ; Groundwater level rise ; Groundwater levels ; Mathematical models ; Mechanical behaviours ; Model testing ; Numerical analysis ; Numerical methods ; Numerical simulation ; Shear forces ; Soil layers ; Stress and pore pressure coupled analysis ; Subway tunnels ; Subways ; Tunnels ; Underground construction ; Unsaturated soils ; Wetting-induced deformation</subject><ispartof>Tunnelling and underground space technology, 2020-04, Vol.98, p.103297, Article 103297</ispartof><rights>2020 Elsevier Ltd</rights><rights>Copyright Elsevier BV Apr 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a351t-18392ef868307197a634252486277e8ee52b206fbffb3817a4ef755dee78e7103</citedby><cites>FETCH-LOGICAL-a351t-18392ef868307197a634252486277e8ee52b206fbffb3817a4ef755dee78e7103</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0886779818313348$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Lu, Dechun</creatorcontrib><creatorcontrib>Li, Xiaoqiang</creatorcontrib><creatorcontrib>Du, Xiuli</creatorcontrib><creatorcontrib>Lin, Qingtao</creatorcontrib><creatorcontrib>Gong, Qiuming</creatorcontrib><title>Numerical simulation and analysis on the mechanical responses of the urban existing subway tunnel during the rising groundwater</title><title>Tunnelling and underground space technology</title><description>In this paper, a numerical method of the rising groundwater level is presented through an elastoplastic constitutive model for the unsaturated soil and a numerical realization method for the rising groundwater level. A model test of the rising groundwater level is conducted to validate the rationality of the presented numerical method. Taking an interval subway tunnel in Beijing as the background, a numerical simulation with a homogeneous soil layer, which contians the existing tunnel, is conducted according to the presented numerical method of the rising groundwater level. Based on the numerical simulation results, the variations of the ground saturation, the ground stress state, and the ground vertical deformation under the condition of the rising groundwater level are studied through a homogeneous soil layer, and the normal contact pressure on the outer surface of the lining, the radial deformation, the bending moment, the hoop thrust, and the shear force of the lining under the condition of the rising groundwater level are analyzed through a homogeneous soil layer with the existing tunnel.</description><subject>Bending moments</subject><subject>Computer simulation</subject><subject>Constitutive models</subject><subject>Contact pressure</subject><subject>Deformation</subject><subject>Elastoplasticity</subject><subject>Existing tunnel</subject><subject>Groundwater</subject><subject>Groundwater level rise</subject><subject>Groundwater levels</subject><subject>Mathematical models</subject><subject>Mechanical behaviours</subject><subject>Model testing</subject><subject>Numerical analysis</subject><subject>Numerical methods</subject><subject>Numerical simulation</subject><subject>Shear forces</subject><subject>Soil layers</subject><subject>Stress and pore pressure coupled analysis</subject><subject>Subway tunnels</subject><subject>Subways</subject><subject>Tunnels</subject><subject>Underground construction</subject><subject>Unsaturated soils</subject><subject>Wetting-induced deformation</subject><issn>0886-7798</issn><issn>1878-4364</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kMtOwzAQRS0EEqXwA6wisU7xI4kdiQ2qeEkINrC2nGRCXaVO8dhAV_w6DmXNwrJn5t6r8SHknNEFo6y6XC9CxLDglE8NwWt5QGZMSZUXoioOyYwqVeVS1uqYnCCuKaUl5_WMfD_FDXjbmiFDu4mDCXZ0mXFdOmbYocUs1WEF2QbalXG_Sg-4HR1CmvW_s-gb4zL4shise8swNp9ml4XoHAxZF_3UnHTe4vR882N03acJ4E_JUW8GhLO_e05eb29elvf54_Pdw_L6MTeiZCFnStQcelUpQSWrpalEwUteqIpLCQqg5A2nVd_0fSMUk6aAXpZlByAVyERkTi72uVs_vkfAoNdj9OmLqHkhWMpShUgqvle1fkT00Outtxvjd5pRPYHWaz2B1hNovQedTFd7E6T9Pyx4ja0F10JnPbRBd6P9z_4DKq-JMw</recordid><startdate>202004</startdate><enddate>202004</enddate><creator>Lu, Dechun</creator><creator>Li, Xiaoqiang</creator><creator>Du, Xiuli</creator><creator>Lin, Qingtao</creator><creator>Gong, Qiuming</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>202004</creationdate><title>Numerical simulation and analysis on the mechanical responses of the urban existing subway tunnel during the rising groundwater</title><author>Lu, Dechun ; Li, Xiaoqiang ; Du, Xiuli ; Lin, Qingtao ; Gong, Qiuming</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a351t-18392ef868307197a634252486277e8ee52b206fbffb3817a4ef755dee78e7103</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Bending moments</topic><topic>Computer simulation</topic><topic>Constitutive models</topic><topic>Contact pressure</topic><topic>Deformation</topic><topic>Elastoplasticity</topic><topic>Existing tunnel</topic><topic>Groundwater</topic><topic>Groundwater level rise</topic><topic>Groundwater levels</topic><topic>Mathematical models</topic><topic>Mechanical behaviours</topic><topic>Model testing</topic><topic>Numerical analysis</topic><topic>Numerical methods</topic><topic>Numerical simulation</topic><topic>Shear forces</topic><topic>Soil layers</topic><topic>Stress and pore pressure coupled analysis</topic><topic>Subway tunnels</topic><topic>Subways</topic><topic>Tunnels</topic><topic>Underground construction</topic><topic>Unsaturated soils</topic><topic>Wetting-induced deformation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lu, Dechun</creatorcontrib><creatorcontrib>Li, Xiaoqiang</creatorcontrib><creatorcontrib>Du, Xiuli</creatorcontrib><creatorcontrib>Lin, Qingtao</creatorcontrib><creatorcontrib>Gong, Qiuming</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Tunnelling and underground space technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lu, Dechun</au><au>Li, Xiaoqiang</au><au>Du, Xiuli</au><au>Lin, Qingtao</au><au>Gong, Qiuming</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Numerical simulation and analysis on the mechanical responses of the urban existing subway tunnel during the rising groundwater</atitle><jtitle>Tunnelling and underground space technology</jtitle><date>2020-04</date><risdate>2020</risdate><volume>98</volume><spage>103297</spage><pages>103297-</pages><artnum>103297</artnum><issn>0886-7798</issn><eissn>1878-4364</eissn><abstract>In this paper, a numerical method of the rising groundwater level is presented through an elastoplastic constitutive model for the unsaturated soil and a numerical realization method for the rising groundwater level. A model test of the rising groundwater level is conducted to validate the rationality of the presented numerical method. Taking an interval subway tunnel in Beijing as the background, a numerical simulation with a homogeneous soil layer, which contians the existing tunnel, is conducted according to the presented numerical method of the rising groundwater level. Based on the numerical simulation results, the variations of the ground saturation, the ground stress state, and the ground vertical deformation under the condition of the rising groundwater level are studied through a homogeneous soil layer, and the normal contact pressure on the outer surface of the lining, the radial deformation, the bending moment, the hoop thrust, and the shear force of the lining under the condition of the rising groundwater level are analyzed through a homogeneous soil layer with the existing tunnel.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.tust.2020.103297</doi></addata></record> |
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| ispartof | Tunnelling and underground space technology, 2020-04, Vol.98, p.103297, Article 103297 |
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| source | Elsevier ScienceDirect Journals |
| subjects | Bending moments Computer simulation Constitutive models Contact pressure Deformation Elastoplasticity Existing tunnel Groundwater Groundwater level rise Groundwater levels Mathematical models Mechanical behaviours Model testing Numerical analysis Numerical methods Numerical simulation Shear forces Soil layers Stress and pore pressure coupled analysis Subway tunnels Subways Tunnels Underground construction Unsaturated soils Wetting-induced deformation |
| title | Numerical simulation and analysis on the mechanical responses of the urban existing subway tunnel during the rising groundwater |
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