Bearing capacity of thin-wall spread foundation in cohesionless soil
Thesis (PhD. (Civil Engineering))
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| Format: | Thesis |
| Language: | English |
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Universiti Teknologi Malaysia
2024
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| Online Access: | https://openscience.utm.my/handle/123456789/1289 |
| _version_ | 1825623295883476992 |
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| author | Momeni, Ehsan |
| author_facet | Momeni, Ehsan |
| author_sort | Momeni, Ehsan |
| collection | OpenScience |
| description | Thesis (PhD. (Civil Engineering)) |
| first_indexed | 2024-09-23T23:50:20Z |
| format | Thesis |
| id | oai:openscience.utm.my:123456789/1289 |
| institution | Universiti Teknologi Malaysia - OpenScience |
| language | English |
| last_indexed | 2024-09-23T23:50:20Z |
| publishDate | 2024 |
| publisher | Universiti Teknologi Malaysia |
| record_format | dspace |
| spelling | oai:openscience.utm.my:123456789/12892024-08-21T23:00:29Z Bearing capacity of thin-wall spread foundation in cohesionless soil Momeni, Ehsan Bearing capacity Thin-walled structures—Testing Industrialized building Thesis (PhD. (Civil Engineering)) Finding totally precast solution for low rise buildings is gaining attention and it is highlighted in Malaysian`s Ninth plan. This is generally attributed to economical and time saving reasons. This research sheds some lights on the workability of a specific thin-wall precast spread foundation suitable for IBS (Industrialized Building System) implementation from the geotechnical point of view. In particular, the study looks at the axial bearing capacity of the aforementioned footing also known as IBS footing. In this regard, the Johor Bahru sand used in this study was dried and characterized in the laboratory. Subsequently load tests were conducted on the small scale IBS footings in loose and dense sands in the laboratory and the results were compared with a simple footing. Findings indicate the improvement ratio almost equals to 2 (in loose and dense sands) when the IBS footing is used instead of simple footings. Nevertheless, for verification purpose, the bearing capacities of the IBS footing determined in the laboratory were checked against finite element analysis using commercial software ABAQUS. Relatively close agreements (less than 10% difference) between the experimental and numerical findings show the consistency and the reliability of the tests. Additionally, further experimental investigations reveal the enhancement of the footing bearing capacity by approximately 1.2 orders of magnitude in both loose and dense sands when the ratio of thin-wall length to width of footing is increased proportionally (1.5 times) i.e. from 0.5 to 0.75 and 0.75 to 1.12. Nevertheless, since the famous bearing capacity equations are proposed for conventional spread foundations rather than thin-wall spread foundations, developing a general predictive model for estimating the bearing capacity of thin-wall spread foundations is of interest. In this regard, using the obtained experimental results in addition to an extensive database that comprises 141 recorded cases of related footing load tests, and after conducting an extensive parametric study, a Particle Swarm Optimization (PSO) based Artificial Neural Network (ANN) model for predicting the bearing capacity of thin-wall spread foundation is proposed. The correlation coefficient equals to 0.98 for testing dataset suggests the feasibility and reliability of the proposed model. Overall, the findings suggest that, in terms of load carrying capacity, the highlighted footing in this study works better compared to simple foundations based from the current research work procedure. Nevertheless, conducting further studies on IBS, from the structural as well as other aspects of geotechnical point of views are strongly recommended Faculty of Civil Engineering 2024-08-21T14:54:28Z 2024-08-21T14:54:28Z 2015 Thesis Dataset https://openscience.utm.my/handle/123456789/1289 en application/pdf application/pdf application/pdf application/pdf application/pdf Universiti Teknologi Malaysia |
| spellingShingle | Bearing capacity Thin-walled structures—Testing Industrialized building Momeni, Ehsan Bearing capacity of thin-wall spread foundation in cohesionless soil |
| title | Bearing capacity of thin-wall spread foundation in cohesionless soil |
| title_full | Bearing capacity of thin-wall spread foundation in cohesionless soil |
| title_fullStr | Bearing capacity of thin-wall spread foundation in cohesionless soil |
| title_full_unstemmed | Bearing capacity of thin-wall spread foundation in cohesionless soil |
| title_short | Bearing capacity of thin-wall spread foundation in cohesionless soil |
| title_sort | bearing capacity of thin wall spread foundation in cohesionless soil |
| topic | Bearing capacity Thin-walled structures—Testing Industrialized building |
| url | https://openscience.utm.my/handle/123456789/1289 |
| work_keys_str_mv | AT momeniehsan bearingcapacityofthinwallspreadfoundationincohesionlesssoil |