Numerical Study of the Behaviour of Embankment Constructed over Soft Soil Stabilized with Ordinary and Geosynthetic - Reinforced Stone Columns
Structures constructed on soft soils may undergo significant settlement, local or global instability, and a significant lateral displacement of the soft soil layer. Ordinary stone columns (OSC) and stone columns strengthened with geosynthetic reinforcement reduce settlement and improve the subsoil&#...
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| Format: | Article |
| Language: | Arabic |
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Assiut University, Faculty of Engineering
2022-07-01
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| Series: | JES: Journal of Engineering Sciences |
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| Online Access: | https://jesaun.journals.ekb.eg/article_238518_834ebee991f192a00598719fe5ab91fe.pdf |
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| author | Mohamed Saied Mahmoud M. Abu Zeid Mostafa A. Abdel Naiem |
| author_facet | Mohamed Saied Mahmoud M. Abu Zeid Mostafa A. Abdel Naiem |
| author_sort | Mohamed Saied |
| collection | DOAJ |
| description | Structures constructed on soft soils may undergo significant settlement, local or global instability, and a significant lateral displacement of the soft soil layer. Ordinary stone columns (OSC) and stone columns strengthened with geosynthetic reinforcement reduce settlement and improve the subsoil's bearing capacity. Numerical analyses have been performed using a 3-dimensional finite element program (PLAXIS3D) to investigate the time-dependent behavior of embankments resting on stone columns constructed in very soft clay. The geosynthetic encasement is the more typical type of reinforcement; however, laminated layers can be adopted in this study. The geosynthetics material was used to strengthen the OSC in the form of vertical encasement, horizontal stripes, and combined vertical-horizontal reinforcement and vertical-basal geogrid reinforcement (BGR). This research compares these forms of reinforcement on embankment behavior. The research results showed that using the encased stone column (ESC) and the vertical-horizontal reinforced stone columns (V-HRSC) have provided a considerable improvement in the lateral deformation of the column over its length, generation, and dissipation of excess pore pressure, and settlement. An increase in factor of safety (FOS) against failure of the embankment was observed by 53% using the ESC compared to untreated soil. Using the horizontal geosynthetic layer (HGL) and the (BGR) after encasing the stone columns has no effect on the safety factor as the failure mechanism converted from deep-seated to surface failure. |
| first_indexed | 2024-04-11T01:16:54Z |
| format | Article |
| id | doaj.art-05d8c82bc8624f8d84fd894bb7237f23 |
| institution | Directory Open Access Journal |
| issn | 1687-0530 2356-8550 |
| language | Arabic |
| last_indexed | 2024-04-11T01:16:54Z |
| publishDate | 2022-07-01 |
| publisher | Assiut University, Faculty of Engineering |
| record_format | Article |
| series | JES: Journal of Engineering Sciences |
| spelling | doaj.art-05d8c82bc8624f8d84fd894bb7237f232023-01-03T18:55:20ZaraAssiut University, Faculty of EngineeringJES: Journal of Engineering Sciences1687-05302356-85502022-07-0150418920410.21608/jesaun.2022.127095.1122238518Numerical Study of the Behaviour of Embankment Constructed over Soft Soil Stabilized with Ordinary and Geosynthetic - Reinforced Stone ColumnsMohamed Saied0Mahmoud M. Abu Zeid1Mostafa A. Abdel Naiem2Civil Engineering Department, Faculty of Engineering, South Valley University, Egypt.Lecturer, Civil Engineering Department, Faculty of Engineering, South Valley University, EgyptProfessor of Engineering and Geotechnical Foundation, Faculty of Engineering, Assiut University, Egypt.Structures constructed on soft soils may undergo significant settlement, local or global instability, and a significant lateral displacement of the soft soil layer. Ordinary stone columns (OSC) and stone columns strengthened with geosynthetic reinforcement reduce settlement and improve the subsoil's bearing capacity. Numerical analyses have been performed using a 3-dimensional finite element program (PLAXIS3D) to investigate the time-dependent behavior of embankments resting on stone columns constructed in very soft clay. The geosynthetic encasement is the more typical type of reinforcement; however, laminated layers can be adopted in this study. The geosynthetics material was used to strengthen the OSC in the form of vertical encasement, horizontal stripes, and combined vertical-horizontal reinforcement and vertical-basal geogrid reinforcement (BGR). This research compares these forms of reinforcement on embankment behavior. The research results showed that using the encased stone column (ESC) and the vertical-horizontal reinforced stone columns (V-HRSC) have provided a considerable improvement in the lateral deformation of the column over its length, generation, and dissipation of excess pore pressure, and settlement. An increase in factor of safety (FOS) against failure of the embankment was observed by 53% using the ESC compared to untreated soil. Using the horizontal geosynthetic layer (HGL) and the (BGR) after encasing the stone columns has no effect on the safety factor as the failure mechanism converted from deep-seated to surface failure.https://jesaun.journals.ekb.eg/article_238518_834ebee991f192a00598719fe5ab91fe.pdfembankmentstone columnsgeosyntheticnumerical studyslope stability |
| spellingShingle | Mohamed Saied Mahmoud M. Abu Zeid Mostafa A. Abdel Naiem Numerical Study of the Behaviour of Embankment Constructed over Soft Soil Stabilized with Ordinary and Geosynthetic - Reinforced Stone Columns JES: Journal of Engineering Sciences embankment stone columns geosynthetic numerical study slope stability |
| title | Numerical Study of the Behaviour of Embankment Constructed over Soft Soil Stabilized with Ordinary and Geosynthetic - Reinforced Stone Columns |
| title_full | Numerical Study of the Behaviour of Embankment Constructed over Soft Soil Stabilized with Ordinary and Geosynthetic - Reinforced Stone Columns |
| title_fullStr | Numerical Study of the Behaviour of Embankment Constructed over Soft Soil Stabilized with Ordinary and Geosynthetic - Reinforced Stone Columns |
| title_full_unstemmed | Numerical Study of the Behaviour of Embankment Constructed over Soft Soil Stabilized with Ordinary and Geosynthetic - Reinforced Stone Columns |
| title_short | Numerical Study of the Behaviour of Embankment Constructed over Soft Soil Stabilized with Ordinary and Geosynthetic - Reinforced Stone Columns |
| title_sort | numerical study of the behaviour of embankment constructed over soft soil stabilized with ordinary and geosynthetic reinforced stone columns |
| topic | embankment stone columns geosynthetic numerical study slope stability |
| url | https://jesaun.journals.ekb.eg/article_238518_834ebee991f192a00598719fe5ab91fe.pdf |
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