Modeling seismic compression of unsaturated soils in the funicular regime
A semi-empirical elasto-plastic constitutive model with a hyperbolic stress-strain curve was developed with the goal of predicting the seismic compression of unsaturated sands in the funicular regime of the soil-water retention curve (SWRC) during undrained cyclic shearing. Using a flow rule derived...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2023-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/19/e3sconf_unsat2023_03001.pdf |
| _version_ | 1797835423291015168 |
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| author | McCartney John Kinikles Dellena |
| author_facet | McCartney John Kinikles Dellena |
| author_sort | McCartney John |
| collection | DOAJ |
| description | A semi-empirical elasto-plastic constitutive model with a hyperbolic stress-strain curve was developed with the goal of predicting the seismic compression of unsaturated sands in the funicular regime of the soil-water retention curve (SWRC) during undrained cyclic shearing. Using a flow rule derived from energy considerations, the evolution in plastic volumetric strain (seismic compression) was predicted from the plastic shear strains of the hysteretic hyperbolic stress-strain curve. The plastic volumetric strains are used to predict the changes in degree of saturation from phase relationships and changes in pore air pressure from Boyle’s and Henry’s laws. The degree of saturation was used to estimate changes in matric suction from the transient scanning paths of the SWRC. Changes in small-strain shear modulus estimated from changes in mean effective stress computed from the constant total stress and changes in pore air pressure, degree of saturation and matric suction, in turn affect the hyperbolic stress-strain curve’s shape and the evolution in plastic volumetric strain. The developments of the new mechanistic model developed in this study will play a key role in the future development of a holistic model for predicting the seismic compression across all regimes of the SWRC. |
| first_indexed | 2024-04-09T14:52:39Z |
| format | Article |
| id | doaj.art-f7d0b1502ef143f094438da3d1cc2ef1 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-04-09T14:52:39Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-f7d0b1502ef143f094438da3d1cc2ef12023-05-02T09:28:10ZengEDP SciencesE3S Web of Conferences2267-12422023-01-013820300110.1051/e3sconf/202338203001e3sconf_unsat2023_03001Modeling seismic compression of unsaturated soils in the funicular regimeMcCartney John0Kinikles Dellena1University of California San Diego, Structural Engineering DepartmentUniversity of California San Diego, Structural Engineering DepartmentA semi-empirical elasto-plastic constitutive model with a hyperbolic stress-strain curve was developed with the goal of predicting the seismic compression of unsaturated sands in the funicular regime of the soil-water retention curve (SWRC) during undrained cyclic shearing. Using a flow rule derived from energy considerations, the evolution in plastic volumetric strain (seismic compression) was predicted from the plastic shear strains of the hysteretic hyperbolic stress-strain curve. The plastic volumetric strains are used to predict the changes in degree of saturation from phase relationships and changes in pore air pressure from Boyle’s and Henry’s laws. The degree of saturation was used to estimate changes in matric suction from the transient scanning paths of the SWRC. Changes in small-strain shear modulus estimated from changes in mean effective stress computed from the constant total stress and changes in pore air pressure, degree of saturation and matric suction, in turn affect the hyperbolic stress-strain curve’s shape and the evolution in plastic volumetric strain. The developments of the new mechanistic model developed in this study will play a key role in the future development of a holistic model for predicting the seismic compression across all regimes of the SWRC.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/19/e3sconf_unsat2023_03001.pdf |
| spellingShingle | McCartney John Kinikles Dellena Modeling seismic compression of unsaturated soils in the funicular regime E3S Web of Conferences |
| title | Modeling seismic compression of unsaturated soils in the funicular regime |
| title_full | Modeling seismic compression of unsaturated soils in the funicular regime |
| title_fullStr | Modeling seismic compression of unsaturated soils in the funicular regime |
| title_full_unstemmed | Modeling seismic compression of unsaturated soils in the funicular regime |
| title_short | Modeling seismic compression of unsaturated soils in the funicular regime |
| title_sort | modeling seismic compression of unsaturated soils in the funicular regime |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/19/e3sconf_unsat2023_03001.pdf |
| work_keys_str_mv | AT mccartneyjohn modelingseismiccompressionofunsaturatedsoilsinthefunicularregime AT kiniklesdellena modelingseismiccompressionofunsaturatedsoilsinthefunicularregime |