Stability analysis of shotcrete supported crown of NATM tunnels with discontinuity layout optimization
Summary For tunnel constructed by New Austrian Tunnelling Method, the crown is the upper part of tunnel section, constructed during excavation process and supported by shotcrete. The stability of the crown has great influence on the safety of tunnel itself and the buildings above, which correlates,...
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| Veröffentlicht in: | International journal for numerical and analytical methods in geomechanics 2018-08, Vol.42 (11), p.1199-1216 |
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| container_title | International journal for numerical and analytical methods in geomechanics |
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| creator | Zhang, Yiming Zhuang, Xiaoying Lackner, Roman |
| description | Summary
For tunnel constructed by New Austrian Tunnelling Method, the crown is the upper part of tunnel section, constructed during excavation process and supported by shotcrete. The stability of the crown has great influence on the safety of tunnel itself and the buildings above, which correlates, among others, with geometrical setup of tunnel and material properties of shotcrete and soil/rock. In this paper, aiming at analyzing the stability of shotcrete supported crown, a recently presented numerical method discontinuity layout optimization is adopted, which introduces a great amount of potential discontinuities cross over one another and provides a wide search space for efficient upper limit analysis. In the analysis, a well‐established hydration model of cementitious material is implemented for accounting the hydration of shotcrete. Then assumptions based on convergence‐confinement method are used for accounting the 3‐dimensional effect in 2‐dimensional analysis, finally providing time‐space–dependent assessments of stability of shotcrete supported crown. |
| doi_str_mv | 10.1002/nag.2775 |
| format | Article |
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For tunnel constructed by New Austrian Tunnelling Method, the crown is the upper part of tunnel section, constructed during excavation process and supported by shotcrete. The stability of the crown has great influence on the safety of tunnel itself and the buildings above, which correlates, among others, with geometrical setup of tunnel and material properties of shotcrete and soil/rock. In this paper, aiming at analyzing the stability of shotcrete supported crown, a recently presented numerical method discontinuity layout optimization is adopted, which introduces a great amount of potential discontinuities cross over one another and provides a wide search space for efficient upper limit analysis. In the analysis, a well‐established hydration model of cementitious material is implemented for accounting the hydration of shotcrete. Then assumptions based on convergence‐confinement method are used for accounting the 3‐dimensional effect in 2‐dimensional analysis, finally providing time‐space–dependent assessments of stability of shotcrete supported crown.</description><identifier>ISSN: 0363-9061</identifier><identifier>EISSN: 1096-9853</identifier><identifier>DOI: 10.1002/nag.2775</identifier><language>eng</language><publisher>Bognor Regis: Wiley Subscription Services, Inc</publisher><subject>Analysis ; Dimensional analysis ; Dimensional stability ; Discontinuity ; discontinuity layout optimization (DLO) ; Dredging ; Excavation ; factor of safety ; failure mechanism ; Hydration ; Layouts ; Limit analysis ; Material properties ; Mathematical analysis ; Mathematical models ; Mohr‐Coulomb failure criteria ; New Austrian Tunnelling Method ; Numerical methods ; Optimization ; Soil ; Soil properties ; Soil stability ; Sprayed concrete ; Stability analysis ; Time dependence ; Tunnel construction ; Tunnels</subject><ispartof>International journal for numerical and analytical methods in geomechanics, 2018-08, Vol.42 (11), p.1199-1216</ispartof><rights>Copyright © 2018 John Wiley & Sons, Ltd.</rights><rights>2018 John Wiley & Sons, Ltd.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a3165-5161aa95e413e9a2a5bf4679418a0468828f57b91a2522e171ce93860a11a0bb3</citedby><cites>FETCH-LOGICAL-a3165-5161aa95e413e9a2a5bf4679418a0468828f57b91a2522e171ce93860a11a0bb3</cites><orcidid>0000-0001-6562-2618</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fnag.2775$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fnag.2775$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,782,786,1419,27933,27934,45583,45584</link.rule.ids></links><search><creatorcontrib>Zhang, Yiming</creatorcontrib><creatorcontrib>Zhuang, Xiaoying</creatorcontrib><creatorcontrib>Lackner, Roman</creatorcontrib><title>Stability analysis of shotcrete supported crown of NATM tunnels with discontinuity layout optimization</title><title>International journal for numerical and analytical methods in geomechanics</title><description>Summary
For tunnel constructed by New Austrian Tunnelling Method, the crown is the upper part of tunnel section, constructed during excavation process and supported by shotcrete. The stability of the crown has great influence on the safety of tunnel itself and the buildings above, which correlates, among others, with geometrical setup of tunnel and material properties of shotcrete and soil/rock. In this paper, aiming at analyzing the stability of shotcrete supported crown, a recently presented numerical method discontinuity layout optimization is adopted, which introduces a great amount of potential discontinuities cross over one another and provides a wide search space for efficient upper limit analysis. In the analysis, a well‐established hydration model of cementitious material is implemented for accounting the hydration of shotcrete. Then assumptions based on convergence‐confinement method are used for accounting the 3‐dimensional effect in 2‐dimensional analysis, finally providing time‐space–dependent assessments of stability of shotcrete supported crown.</description><subject>Analysis</subject><subject>Dimensional analysis</subject><subject>Dimensional stability</subject><subject>Discontinuity</subject><subject>discontinuity layout optimization (DLO)</subject><subject>Dredging</subject><subject>Excavation</subject><subject>factor of safety</subject><subject>failure mechanism</subject><subject>Hydration</subject><subject>Layouts</subject><subject>Limit analysis</subject><subject>Material properties</subject><subject>Mathematical analysis</subject><subject>Mathematical models</subject><subject>Mohr‐Coulomb failure criteria</subject><subject>New Austrian Tunnelling Method</subject><subject>Numerical methods</subject><subject>Optimization</subject><subject>Soil</subject><subject>Soil properties</subject><subject>Soil stability</subject><subject>Sprayed concrete</subject><subject>Stability analysis</subject><subject>Time dependence</subject><subject>Tunnel construction</subject><subject>Tunnels</subject><issn>0363-9061</issn><issn>1096-9853</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kEFLwzAYhoMoOKfgTwh48dKZr2nS5jiGTmHOg_Ncvnapy-iS2qSM-uttnVdP7-F9eOF9CLkFNgPG4geLn7M4TcUZmQBTMlKZ4OdkwrjkkWISLsmV93vGmBjaCaneAxamNqGnaLHuvfHUVdTvXChbHTT1XdO4NugtLVt3tGO5nm9eaeis1bWnRxN2dGt86WwwthuHauxdF6hrgjmYbwzG2WtyUWHt9c1fTsnH0-Nm8Ryt3pYvi_kqQg5SRAIkICqhE-BaYYyiqBKZqgQyZInMsjirRFoowFjEsYYUSq14JhkCICsKPiV3p92mdV-d9iHfu64djvk8ZpJDkrFMDdT9iRoued_qKm9ac8C2z4Hlo8V8sJiPFgc0OqFHU-v-Xy5fz5e__A_QbHP_</recordid><startdate>20180810</startdate><enddate>20180810</enddate><creator>Zhang, Yiming</creator><creator>Zhuang, Xiaoying</creator><creator>Lackner, Roman</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SC</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>JQ2</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><orcidid>https://orcid.org/0000-0001-6562-2618</orcidid></search><sort><creationdate>20180810</creationdate><title>Stability analysis of shotcrete supported crown of NATM tunnels with discontinuity layout optimization</title><author>Zhang, Yiming ; Zhuang, Xiaoying ; Lackner, Roman</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a3165-5161aa95e413e9a2a5bf4679418a0468828f57b91a2522e171ce93860a11a0bb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Analysis</topic><topic>Dimensional analysis</topic><topic>Dimensional stability</topic><topic>Discontinuity</topic><topic>discontinuity layout optimization (DLO)</topic><topic>Dredging</topic><topic>Excavation</topic><topic>factor of safety</topic><topic>failure mechanism</topic><topic>Hydration</topic><topic>Layouts</topic><topic>Limit analysis</topic><topic>Material properties</topic><topic>Mathematical analysis</topic><topic>Mathematical models</topic><topic>Mohr‐Coulomb failure criteria</topic><topic>New Austrian Tunnelling Method</topic><topic>Numerical methods</topic><topic>Optimization</topic><topic>Soil</topic><topic>Soil properties</topic><topic>Soil stability</topic><topic>Sprayed concrete</topic><topic>Stability analysis</topic><topic>Time dependence</topic><topic>Tunnel construction</topic><topic>Tunnels</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Yiming</creatorcontrib><creatorcontrib>Zhuang, Xiaoying</creatorcontrib><creatorcontrib>Lackner, Roman</creatorcontrib><collection>CrossRef</collection><collection>Computer and Information Systems Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><jtitle>International journal for numerical and analytical methods in geomechanics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Yiming</au><au>Zhuang, Xiaoying</au><au>Lackner, Roman</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Stability analysis of shotcrete supported crown of NATM tunnels with discontinuity layout optimization</atitle><jtitle>International journal for numerical and analytical methods in geomechanics</jtitle><date>2018-08-10</date><risdate>2018</risdate><volume>42</volume><issue>11</issue><spage>1199</spage><epage>1216</epage><pages>1199-1216</pages><issn>0363-9061</issn><eissn>1096-9853</eissn><abstract>Summary
For tunnel constructed by New Austrian Tunnelling Method, the crown is the upper part of tunnel section, constructed during excavation process and supported by shotcrete. The stability of the crown has great influence on the safety of tunnel itself and the buildings above, which correlates, among others, with geometrical setup of tunnel and material properties of shotcrete and soil/rock. In this paper, aiming at analyzing the stability of shotcrete supported crown, a recently presented numerical method discontinuity layout optimization is adopted, which introduces a great amount of potential discontinuities cross over one another and provides a wide search space for efficient upper limit analysis. In the analysis, a well‐established hydration model of cementitious material is implemented for accounting the hydration of shotcrete. Then assumptions based on convergence‐confinement method are used for accounting the 3‐dimensional effect in 2‐dimensional analysis, finally providing time‐space–dependent assessments of stability of shotcrete supported crown.</abstract><cop>Bognor Regis</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/nag.2775</doi><tpages>18</tpages><orcidid>https://orcid.org/0000-0001-6562-2618</orcidid></addata></record> |
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| subjects | Analysis Dimensional analysis Dimensional stability Discontinuity discontinuity layout optimization (DLO) Dredging Excavation factor of safety failure mechanism Hydration Layouts Limit analysis Material properties Mathematical analysis Mathematical models Mohr‐Coulomb failure criteria New Austrian Tunnelling Method Numerical methods Optimization Soil Soil properties Soil stability Sprayed concrete Stability analysis Time dependence Tunnel construction Tunnels |
| title | Stability analysis of shotcrete supported crown of NATM tunnels with discontinuity layout optimization |
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