Investigation of the role of crown crack in cohesive soil slope and its effect on slope stability based on the extended finite element method
Tensile cracks in soil slopes, especially developing at the crown, have been increasingly recognized as the signal of slope metastability. In this paper, the role of crown cracks in natural soil slopes was investigated and its effect on stability was studied. A numerical modeling of slope and simula...
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| Veröffentlicht in: | Natural hazards (Dordrecht) 2022, Vol.110 (1), p.295-314 |
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| creator | Bao, Yiding Li, Yuchao Zhang, Yansong Yan, Jianhua Zhou, Xin Zhang, Xudong |
| description | Tensile cracks in soil slopes, especially developing at the crown, have been increasingly recognized as the signal of slope metastability. In this paper, the role of crown cracks in natural soil slopes was investigated and its effect on stability was studied. A numerical modeling of slope and simulation of tensile behavior of soil, based on the Extended Finite Element Method (XFEM), was used. A numerical soil tensile test was applied to validate the use of XFEM on tensile behavior of soil before the simulation. Slope failure was simulated by using the Strength Reduction Method, which determines the potential slip surface of slope. The simulation results indicate forming of crown crack in natural soil slopes when the plastic zone starts penetrating. Therefore, it is reasonable to consider the crown crack as the signal of slope metastability. A sensitivity analysis shows the effect of cracking on slope stability if cracks are at the position of the tension zone. The stress variation analysis, from the surface slip deformation, reveals that the slope is at a state of compressive stress. When plastic zone starts penetrating, the upper part of slope generates tension zone, but the extent of tension zone is restricted by the slope failure. This suggests why tensile cracks are difficult to form and stretch in the deep part of the slope. The implementation of XFEM on slope stability analysis can be used for assessing the tensile strength of soil and forecasting the time of slope failure related disaster. |
| doi_str_mv | 10.1007/s11069-021-04947-8 |
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In this paper, the role of crown cracks in natural soil slopes was investigated and its effect on stability was studied. A numerical modeling of slope and simulation of tensile behavior of soil, based on the Extended Finite Element Method (XFEM), was used. A numerical soil tensile test was applied to validate the use of XFEM on tensile behavior of soil before the simulation. Slope failure was simulated by using the Strength Reduction Method, which determines the potential slip surface of slope. The simulation results indicate forming of crown crack in natural soil slopes when the plastic zone starts penetrating. Therefore, it is reasonable to consider the crown crack as the signal of slope metastability. A sensitivity analysis shows the effect of cracking on slope stability if cracks are at the position of the tension zone. The stress variation analysis, from the surface slip deformation, reveals that the slope is at a state of compressive stress. When plastic zone starts penetrating, the upper part of slope generates tension zone, but the extent of tension zone is restricted by the slope failure. This suggests why tensile cracks are difficult to form and stretch in the deep part of the slope. The implementation of XFEM on slope stability analysis can be used for assessing the tensile strength of soil and forecasting the time of slope failure related disaster.</description><identifier>ISSN: 0921-030X</identifier><identifier>EISSN: 1573-0840</identifier><identifier>DOI: 10.1007/s11069-021-04947-8</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Analysis ; Civil Engineering ; Cohesive soils ; Compressive properties ; Cracking (corrosion) ; Cracks ; Deformation ; Earth and Environmental Science ; Earth Sciences ; Environmental Management ; Failure ; Finite element analysis ; Finite element method ; Geophysics/Geodesy ; Geotechnical Engineering & Applied Earth Sciences ; Hydrogeology ; Mathematical analysis ; Metastable state ; Natural Hazards ; Natural slope ; Original Paper ; Plastic zones ; Sensitivity analysis ; Simulation ; Slip ; Slope stability ; Soil investigations ; Soil stability ; Soil strength ; Soil testing ; Stability analysis ; Tensile strength ; Tensile tests ; Tension</subject><ispartof>Natural hazards (Dordrecht), 2022, Vol.110 (1), p.295-314</ispartof><rights>The Author(s), under exclusive licence to Springer Nature B.V. 2021</rights><rights>The Author(s), under exclusive licence to Springer Nature B.V. 2021.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c319t-3a0febfe75b66617e0b9350bdfa6b7ce17680f2fb5368ca850a76cf9de091f5c3</citedby><cites>FETCH-LOGICAL-c319t-3a0febfe75b66617e0b9350bdfa6b7ce17680f2fb5368ca850a76cf9de091f5c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11069-021-04947-8$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11069-021-04947-8$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Bao, Yiding</creatorcontrib><creatorcontrib>Li, Yuchao</creatorcontrib><creatorcontrib>Zhang, Yansong</creatorcontrib><creatorcontrib>Yan, Jianhua</creatorcontrib><creatorcontrib>Zhou, Xin</creatorcontrib><creatorcontrib>Zhang, Xudong</creatorcontrib><title>Investigation of the role of crown crack in cohesive soil slope and its effect on slope stability based on the extended finite element method</title><title>Natural hazards (Dordrecht)</title><addtitle>Nat Hazards</addtitle><description>Tensile cracks in soil slopes, especially developing at the crown, have been increasingly recognized as the signal of slope metastability. In this paper, the role of crown cracks in natural soil slopes was investigated and its effect on stability was studied. A numerical modeling of slope and simulation of tensile behavior of soil, based on the Extended Finite Element Method (XFEM), was used. A numerical soil tensile test was applied to validate the use of XFEM on tensile behavior of soil before the simulation. Slope failure was simulated by using the Strength Reduction Method, which determines the potential slip surface of slope. The simulation results indicate forming of crown crack in natural soil slopes when the plastic zone starts penetrating. Therefore, it is reasonable to consider the crown crack as the signal of slope metastability. A sensitivity analysis shows the effect of cracking on slope stability if cracks are at the position of the tension zone. The stress variation analysis, from the surface slip deformation, reveals that the slope is at a state of compressive stress. When plastic zone starts penetrating, the upper part of slope generates tension zone, but the extent of tension zone is restricted by the slope failure. This suggests why tensile cracks are difficult to form and stretch in the deep part of the slope. The implementation of XFEM on slope stability analysis can be used for assessing the tensile strength of soil and forecasting the time of slope failure related disaster.</description><subject>Analysis</subject><subject>Civil Engineering</subject><subject>Cohesive soils</subject><subject>Compressive properties</subject><subject>Cracking (corrosion)</subject><subject>Cracks</subject><subject>Deformation</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Environmental Management</subject><subject>Failure</subject><subject>Finite element analysis</subject><subject>Finite element method</subject><subject>Geophysics/Geodesy</subject><subject>Geotechnical Engineering & Applied Earth Sciences</subject><subject>Hydrogeology</subject><subject>Mathematical analysis</subject><subject>Metastable state</subject><subject>Natural Hazards</subject><subject>Natural slope</subject><subject>Original Paper</subject><subject>Plastic zones</subject><subject>Sensitivity analysis</subject><subject>Simulation</subject><subject>Slip</subject><subject>Slope stability</subject><subject>Soil investigations</subject><subject>Soil stability</subject><subject>Soil strength</subject><subject>Soil testing</subject><subject>Stability analysis</subject><subject>Tensile strength</subject><subject>Tensile 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stability based on the extended finite element method</title><author>Bao, Yiding ; Li, Yuchao ; Zhang, Yansong ; Yan, Jianhua ; Zhou, Xin ; Zhang, Xudong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-3a0febfe75b66617e0b9350bdfa6b7ce17680f2fb5368ca850a76cf9de091f5c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Analysis</topic><topic>Civil Engineering</topic><topic>Cohesive soils</topic><topic>Compressive properties</topic><topic>Cracking (corrosion)</topic><topic>Cracks</topic><topic>Deformation</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Environmental Management</topic><topic>Failure</topic><topic>Finite element analysis</topic><topic>Finite element method</topic><topic>Geophysics/Geodesy</topic><topic>Geotechnical Engineering & Applied Earth Sciences</topic><topic>Hydrogeology</topic><topic>Mathematical analysis</topic><topic>Metastable state</topic><topic>Natural Hazards</topic><topic>Natural slope</topic><topic>Original Paper</topic><topic>Plastic zones</topic><topic>Sensitivity analysis</topic><topic>Simulation</topic><topic>Slip</topic><topic>Slope stability</topic><topic>Soil investigations</topic><topic>Soil stability</topic><topic>Soil strength</topic><topic>Soil testing</topic><topic>Stability analysis</topic><topic>Tensile strength</topic><topic>Tensile tests</topic><topic>Tension</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bao, Yiding</creatorcontrib><creatorcontrib>Li, Yuchao</creatorcontrib><creatorcontrib>Zhang, Yansong</creatorcontrib><creatorcontrib>Yan, Jianhua</creatorcontrib><creatorcontrib>Zhou, Xin</creatorcontrib><creatorcontrib>Zhang, Xudong</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Environment Abstracts</collection><collection>Meteorological 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Hazards</stitle><date>2022</date><risdate>2022</risdate><volume>110</volume><issue>1</issue><spage>295</spage><epage>314</epage><pages>295-314</pages><issn>0921-030X</issn><eissn>1573-0840</eissn><abstract>Tensile cracks in soil slopes, especially developing at the crown, have been increasingly recognized as the signal of slope metastability. In this paper, the role of crown cracks in natural soil slopes was investigated and its effect on stability was studied. A numerical modeling of slope and simulation of tensile behavior of soil, based on the Extended Finite Element Method (XFEM), was used. A numerical soil tensile test was applied to validate the use of XFEM on tensile behavior of soil before the simulation. Slope failure was simulated by using the Strength Reduction Method, which determines the potential slip surface of slope. The simulation results indicate forming of crown crack in natural soil slopes when the plastic zone starts penetrating. Therefore, it is reasonable to consider the crown crack as the signal of slope metastability. A sensitivity analysis shows the effect of cracking on slope stability if cracks are at the position of the tension zone. The stress variation analysis, from the surface slip deformation, reveals that the slope is at a state of compressive stress. When plastic zone starts penetrating, the upper part of slope generates tension zone, but the extent of tension zone is restricted by the slope failure. This suggests why tensile cracks are difficult to form and stretch in the deep part of the slope. The implementation of XFEM on slope stability analysis can be used for assessing the tensile strength of soil and forecasting the time of slope failure related disaster.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s11069-021-04947-8</doi><tpages>20</tpages></addata></record> |
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| subjects | Analysis Civil Engineering Cohesive soils Compressive properties Cracking (corrosion) Cracks Deformation Earth and Environmental Science Earth Sciences Environmental Management Failure Finite element analysis Finite element method Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Hydrogeology Mathematical analysis Metastable state Natural Hazards Natural slope Original Paper Plastic zones Sensitivity analysis Simulation Slip Slope stability Soil investigations Soil stability Soil strength Soil testing Stability analysis Tensile strength Tensile tests Tension |
| title | Investigation of the role of crown crack in cohesive soil slope and its effect on slope stability based on the extended finite element method |
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