دورية أكاديمية
Settlements and Subgrade Reactions of Surface Raft Foundations Subjected to Vertically Uniform Load
| العنوان: | Settlements and Subgrade Reactions of Surface Raft Foundations Subjected to Vertically Uniform Load |
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| المؤلفون: | Der-Wen Chang, Chih-Wei Lu, Yu-Jhang Tu, Shih-Hao Cheng |
| المصدر: | Applied Sciences, Vol 12, Iss 11, p 5484 (2022) |
| بيانات النشر: | MDPI AG, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Technology LCC:Engineering (General). Civil engineering (General) LCC:Biology (General) LCC:Physics LCC:Chemistry |
| مصطلحات موضوعية: | raft foundation, settlement, soil reactions, coefficient of subgrade reaction, finite-element analysis, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999 |
| الوصف: | The settlements and corresponding soil reactions of a surface raft foundation subjected to vertically uniform load at the sites of granular or cohesive soils have been qualitatively introduced to engineers in the past. This study intends to verify the foundation load-response mechanism using three-dimensional finite-element analyses. The Mohr–Coulomb soil model was used to simulate the nonlinear effects of the granular and cohesive soils. The coefficients of subgrade reactions of the soil were back-calculated and compared to those obtained from the rigid foundation model. For all the square surface rafts studied, non-uniform settlements with the largest value at the center can be found. For the smallest rafts located in clay, the soil reactions were found to be rather consistent. For larger rafts in clay, the soil reactions would be changed according to the soil stiffness and raft dimensions. For surface rafts in sand, the effects of soil stiffness on soil reactions appeared to be insignificant. The soil reactions were generally higher at the center and varied with raft dimensions. For the smallest raft in sand, large soil reactions can be found at the edge. The coefficients of subgrade reactions were found to be more consistent with the smallest values occurring at the center. The results of this study indicate that the load-response mechanism of the raft foundation is rather complicated. Such load-response mechanisms are strongly affected by the relative rigidity of the foundation depending on soil stiffness and foundation dimensions. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2076-3417 |
| العلاقة: | https://www.mdpi.com/2076-3417/12/11/5484Test; https://doaj.org/toc/2076-3417Test |
| DOI: | 10.3390/app12115484 |
| الوصول الحر: | https://doaj.org/article/5ce31db5ce854e588cba22a633028baeTest |
| رقم الانضمام: | edsdoj.5ce31db5ce854e588cba22a633028bae |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20763417 |
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| DOI: | 10.3390/app12115484 |