Numerical Analysis of Piled-Raft Foundations on Multi-Layer Soil Considering Settlement and Swelling
Numerical modelling can simulate the interaction between structural elements and the soil continuum in a piled-raft foundation. The present work utilized a two-dimensional finite element Plaxis 2D software to investigate the settlement, swelling, and structural behavior of foundations during the set...
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MDPI AG
2022-03-01
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| Online Access: | https://www.mdpi.com/2075-5309/12/3/356 |
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| author | Muhammad Rehan Hakro Aneel Kumar Zaheer Almani Mujahid Ali Fahid Aslam Roman Fediuk Sergey Klyuev Alexander Klyuev Linar Sabitov |
| author_facet | Muhammad Rehan Hakro Aneel Kumar Zaheer Almani Mujahid Ali Fahid Aslam Roman Fediuk Sergey Klyuev Alexander Klyuev Linar Sabitov |
| author_sort | Muhammad Rehan Hakro |
| collection | DOAJ |
| description | Numerical modelling can simulate the interaction between structural elements and the soil continuum in a piled-raft foundation. The present work utilized a two-dimensional finite element Plaxis 2D software to investigate the settlement, swelling, and structural behavior of foundations during the settlement and swelling of soil on various soil profiles under various load combinations and geometry conditions. The field and laboratory testing have been performed to determine the behavior soil parameters necessary for numerical modelling. The Mohr–Coulomb model is utilized to simulate the behavior of soil, as this model requires very few input parameters, which is important for the practical geotechnical behavior of soil. From this study, it was observed that, as soil is soft and has less stiffness, the un-piled raft was not sufficient to resists and higher loads and exceeds the limits of settlement. Piled raft increases the load carrying capacity of soil, and the lower soil layer has a higher stiffness where the pile rests, decreasing the significant settlement. Further, the effects of (L/d) and (s/d) of the pile and K<sub>rs</sub> on the settlement are also discussed, detailed numerically under different scenarios. The swelling of expansive soil was also simulated in Plaxis 2D with an application of positive volumetric strain. The above-mentioned parametric study was similarly implemented for the heaving of foundation on expansive soil. |
| first_indexed | 2024-03-09T20:03:22Z |
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| id | doaj.art-e38b9d4756ea416dba519dac5e9a24aa |
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| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T20:03:22Z |
| publishDate | 2022-03-01 |
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| series | Buildings |
| spelling | doaj.art-e38b9d4756ea416dba519dac5e9a24aa2023-11-24T00:39:25ZengMDPI AGBuildings2075-53092022-03-0112335610.3390/buildings12030356Numerical Analysis of Piled-Raft Foundations on Multi-Layer Soil Considering Settlement and SwellingMuhammad Rehan Hakro0Aneel Kumar1Zaheer Almani2Mujahid Ali3Fahid Aslam4Roman Fediuk5Sergey Klyuev6Alexander Klyuev7Linar Sabitov8Department of Civil Engineering, Mehran University of Engineering and Technology, Jamshoro 76062, Sindh, PakistanDepartment of Civil Engineering, Mehran University of Engineering and Technology, Jamshoro 76062, Sindh, PakistanDepartment of Civil Engineering, Mehran University of Engineering and Technology, Jamshoro 76062, Sindh, PakistanDepartment of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 31750, Perak, MalaysiaDepartment of Civil Engineering, College of Engineering in Al-Kharj, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi ArabiaPolytechnic Institute, Far Eastern Federal University, 690922 Vladivostok, RussiaDepartment of Theoretical Mechanics and Strength of Materials, Belgorod State Technological University Named after V.G. Shukhov, 308012 Belgorod, RussiaDepartment of Theoretical Mechanics and Strength of Materials, Belgorod State Technological University Named after V.G. Shukhov, 308012 Belgorod, RussiaKazan Federal University, 420008 Kazan, RussiaNumerical modelling can simulate the interaction between structural elements and the soil continuum in a piled-raft foundation. The present work utilized a two-dimensional finite element Plaxis 2D software to investigate the settlement, swelling, and structural behavior of foundations during the settlement and swelling of soil on various soil profiles under various load combinations and geometry conditions. The field and laboratory testing have been performed to determine the behavior soil parameters necessary for numerical modelling. The Mohr–Coulomb model is utilized to simulate the behavior of soil, as this model requires very few input parameters, which is important for the practical geotechnical behavior of soil. From this study, it was observed that, as soil is soft and has less stiffness, the un-piled raft was not sufficient to resists and higher loads and exceeds the limits of settlement. Piled raft increases the load carrying capacity of soil, and the lower soil layer has a higher stiffness where the pile rests, decreasing the significant settlement. Further, the effects of (L/d) and (s/d) of the pile and K<sub>rs</sub> on the settlement are also discussed, detailed numerically under different scenarios. The swelling of expansive soil was also simulated in Plaxis 2D with an application of positive volumetric strain. The above-mentioned parametric study was similarly implemented for the heaving of foundation on expansive soil.https://www.mdpi.com/2075-5309/12/3/356settlementpiled raftsoil behaviornumerical modelingPlaxis 2D |
| spellingShingle | Muhammad Rehan Hakro Aneel Kumar Zaheer Almani Mujahid Ali Fahid Aslam Roman Fediuk Sergey Klyuev Alexander Klyuev Linar Sabitov Numerical Analysis of Piled-Raft Foundations on Multi-Layer Soil Considering Settlement and Swelling Buildings settlement piled raft soil behavior numerical modeling Plaxis 2D |
| title | Numerical Analysis of Piled-Raft Foundations on Multi-Layer Soil Considering Settlement and Swelling |
| title_full | Numerical Analysis of Piled-Raft Foundations on Multi-Layer Soil Considering Settlement and Swelling |
| title_fullStr | Numerical Analysis of Piled-Raft Foundations on Multi-Layer Soil Considering Settlement and Swelling |
| title_full_unstemmed | Numerical Analysis of Piled-Raft Foundations on Multi-Layer Soil Considering Settlement and Swelling |
| title_short | Numerical Analysis of Piled-Raft Foundations on Multi-Layer Soil Considering Settlement and Swelling |
| title_sort | numerical analysis of piled raft foundations on multi layer soil considering settlement and swelling |
| topic | settlement piled raft soil behavior numerical modeling Plaxis 2D |
| url | https://www.mdpi.com/2075-5309/12/3/356 |
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