Behaviour of Unsaturated Subgrade Soil Under Highway Load
This paper studied the application of 2-D Plaxis (v8.6, 2011) software on a pavement layer structure set on unsaturated subgrade soil. An axisymmetric finite element (FE) model was used to analyze the behavior of pavement layers subjected to dynamic loadings. The model was loaded with an incrementa...
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| Format: | Article |
| Language: | English |
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University of Diyala
2019-03-01
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| Series: | Diyala Journal of Engineering Sciences |
| Subjects: | |
| Online Access: | https://djes.info/index.php/djes/article/view/93 |
| _version_ | 1811282938512277504 |
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| author | Ghassan Nasser Jaffer Hanan Adnan Hassan Afaj Hadeel Amaar Mohammed |
| author_facet | Ghassan Nasser Jaffer Hanan Adnan Hassan Afaj Hadeel Amaar Mohammed |
| author_sort | Ghassan Nasser Jaffer |
| collection | DOAJ |
| description |
This paper studied the application of 2-D Plaxis (v8.6, 2011) software on a pavement layer structure set on unsaturated subgrade soil. An axisymmetric finite element (FE) model was used to analyze the behavior of pavement layers subjected to dynamic loadings. The model was loaded with an incremental contact pressure from 50 to 550 kPa with different variable such as water table level (1,2 and 3m), suction of soil and degree of saturation (100, 90, 80, 70 and 20%). The results indicated that during loading on pavement layer with increases water table level and different degree of saturation the vertical settlement was decreased by about (11, 15, and 18%) for water table level= 1m, (9, 13, 16%) for water table level= 2m and (28%) for water table level= 3m (dry soil) respectively. The effect of degree of saturation on the vertical settlement is apparent at the lower value for water table level (1 and 2m) and the vertical settlement is decreased with increasing soil suction. The results also show the negative pore water pressure decreased with decreased of degree of saturation and development increases with depth and beginning of dynamic load. The effect of unsaturation greater at the center line of pavement layer and limited far away the center line.
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| first_indexed | 2024-04-13T02:01:37Z |
| format | Article |
| id | doaj.art-60b679248cc3432a8e3d9c9c2ceefd10 |
| institution | Directory Open Access Journal |
| issn | 1999-8716 2616-6909 |
| language | English |
| last_indexed | 2024-04-13T02:01:37Z |
| publishDate | 2019-03-01 |
| publisher | University of Diyala |
| record_format | Article |
| series | Diyala Journal of Engineering Sciences |
| spelling | doaj.art-60b679248cc3432a8e3d9c9c2ceefd102022-12-22T03:07:36ZengUniversity of DiyalaDiyala Journal of Engineering Sciences1999-87162616-69092019-03-0112110.24237/djes.2019.12104Behaviour of Unsaturated Subgrade Soil Under Highway LoadGhassan Nasser Jaffer0Hanan Adnan Hassan Afaj1Hadeel Amaar Mohammed2General company for trade construction material, BaghdadDepartment of Highway and Transportation Engineering, Al-Mustansiriayah UniversityDepartment of Highway and Transportation Engineering, Al-Mustansiriayah University This paper studied the application of 2-D Plaxis (v8.6, 2011) software on a pavement layer structure set on unsaturated subgrade soil. An axisymmetric finite element (FE) model was used to analyze the behavior of pavement layers subjected to dynamic loadings. The model was loaded with an incremental contact pressure from 50 to 550 kPa with different variable such as water table level (1,2 and 3m), suction of soil and degree of saturation (100, 90, 80, 70 and 20%). The results indicated that during loading on pavement layer with increases water table level and different degree of saturation the vertical settlement was decreased by about (11, 15, and 18%) for water table level= 1m, (9, 13, 16%) for water table level= 2m and (28%) for water table level= 3m (dry soil) respectively. The effect of degree of saturation on the vertical settlement is apparent at the lower value for water table level (1 and 2m) and the vertical settlement is decreased with increasing soil suction. The results also show the negative pore water pressure decreased with decreased of degree of saturation and development increases with depth and beginning of dynamic load. The effect of unsaturation greater at the center line of pavement layer and limited far away the center line. https://djes.info/index.php/djes/article/view/93Unsaturated SoilSoil SuctionPavementFE AnalysisDynamic Loading |
| spellingShingle | Ghassan Nasser Jaffer Hanan Adnan Hassan Afaj Hadeel Amaar Mohammed Behaviour of Unsaturated Subgrade Soil Under Highway Load Diyala Journal of Engineering Sciences Unsaturated Soil Soil Suction Pavement FE Analysis Dynamic Loading |
| title | Behaviour of Unsaturated Subgrade Soil Under Highway Load |
| title_full | Behaviour of Unsaturated Subgrade Soil Under Highway Load |
| title_fullStr | Behaviour of Unsaturated Subgrade Soil Under Highway Load |
| title_full_unstemmed | Behaviour of Unsaturated Subgrade Soil Under Highway Load |
| title_short | Behaviour of Unsaturated Subgrade Soil Under Highway Load |
| title_sort | behaviour of unsaturated subgrade soil under highway load |
| topic | Unsaturated Soil Soil Suction Pavement FE Analysis Dynamic Loading |
| url | https://djes.info/index.php/djes/article/view/93 |
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