Numerical Evaluation of Settlement of Strip Footing Resting on Cavity and Weak Soil Profile
This study numerically investigates the effects of different subsurface sources of weaknesses within a soil profile on the settlement of a strip footing using the finite element method (FEM). During the first phase of the study, the influences of size, shape, depth, and distance of cavity from the c...
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Erbil Polytechnic University
2021-06-01
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| Series: | Polytechnic Journal |
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| Online Access: | https://polytechnic-journal.epu.edu.iq/home/vol11/iss1/17 |
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| author | Mohammed S. Hussain |
| author_facet | Mohammed S. Hussain |
| author_sort | Mohammed S. Hussain |
| collection | DOAJ |
| description | This study numerically investigates the effects of different subsurface sources of weaknesses within a
soil profile on the settlement of a strip footing using the finite element method (FEM). During the first
phase of the study, the influences of size, shape, depth, and distance of cavity from the center of the
footing are evaluated. It is noted that the settlement of foundation is increased when the cavity is located
at smaller depths and closer to its center. It is concluded that there is a critical zone, where the risk level
of settlement (especially differential settlement) due to the cavity is high. The depth of this critical zone
is found to be 2.5B (where B is the width of the footing) below the simulated loading area. In the second
phase of the study, increasing the degree of weakness of a certain low stiffness layer within the soil profile
below the loaded area is simulated as another factor that increases the settlement risks. It is shown that
the depth of this weak layer highly controls the settlement of footing even if it is situated at depths >2.5B |
| format | Article |
| id | doaj-art-c2e2957a18fd4efc9ff802a4d7d13acd |
| institution | DOAJ |
| issn | 2707-7799 |
| language | English |
| publishDate | 2021-06-01 |
| publisher | Erbil Polytechnic University |
| record_format | Article |
| series | Polytechnic Journal |
| spelling | doaj-art-c2e2957a18fd4efc9ff802a4d7d13acd2025-08-20T03:23:15ZengErbil Polytechnic UniversityPolytechnic Journal2707-77992021-06-011118797https://doi.org/10.25156/ptj.v11n1y2021.pp87-97Numerical Evaluation of Settlement of Strip Footing Resting on Cavity and Weak Soil ProfileMohammed S. Hussain0Department of Civil Engineering, College of Engineering, University of Duhok, Duhok, Kurdistan Region, IraqThis study numerically investigates the effects of different subsurface sources of weaknesses within a soil profile on the settlement of a strip footing using the finite element method (FEM). During the first phase of the study, the influences of size, shape, depth, and distance of cavity from the center of the footing are evaluated. It is noted that the settlement of foundation is increased when the cavity is located at smaller depths and closer to its center. It is concluded that there is a critical zone, where the risk level of settlement (especially differential settlement) due to the cavity is high. The depth of this critical zone is found to be 2.5B (where B is the width of the footing) below the simulated loading area. In the second phase of the study, increasing the degree of weakness of a certain low stiffness layer within the soil profile below the loaded area is simulated as another factor that increases the settlement risks. It is shown that the depth of this weak layer highly controls the settlement of footing even if it is situated at depths >2.5Bhttps://polytechnic-journal.epu.edu.iq/home/vol11/iss1/17numerical modeling;settlement;weak soils;cavity;strip footing |
| spellingShingle | Mohammed S. Hussain Numerical Evaluation of Settlement of Strip Footing Resting on Cavity and Weak Soil Profile Polytechnic Journal numerical modeling; settlement; weak soils; cavity; strip footing |
| title | Numerical Evaluation of Settlement of Strip Footing Resting on Cavity and Weak Soil Profile |
| title_full | Numerical Evaluation of Settlement of Strip Footing Resting on Cavity and Weak Soil Profile |
| title_fullStr | Numerical Evaluation of Settlement of Strip Footing Resting on Cavity and Weak Soil Profile |
| title_full_unstemmed | Numerical Evaluation of Settlement of Strip Footing Resting on Cavity and Weak Soil Profile |
| title_short | Numerical Evaluation of Settlement of Strip Footing Resting on Cavity and Weak Soil Profile |
| title_sort | numerical evaluation of settlement of strip footing resting on cavity and weak soil profile |
| topic | numerical modeling; settlement; weak soils; cavity; strip footing |
| url | https://polytechnic-journal.epu.edu.iq/home/vol11/iss1/17 |
| work_keys_str_mv | AT mohammedshussain numericalevaluationofsettlementofstripfootingrestingoncavityandweaksoilprofile |