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An evaluation of thermal effects on behavior of a concrete arch dam |
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| รหัสดีโอไอ | |
| Creator | 1. Kiet Anh Bui 2. Pakawat Sancharoen 3. Ganchai Tanapornraweekit 4. Somnuk Tangtermsirikul 5. Pruettha Nanakorn |
| Title | An evaluation of thermal effects on behavior of a concrete arch dam |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2019 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 41 |
| Journal No. | 5 |
| Page no. | 1059-1068 |
| Keyword | arch dam, finite element, solar radiation, thermal analysis, crack |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | The aim of this study is to present an evaluation of the thermal load effects on the behavior of a concrete arch dam inThailand. A Three-Dimensional Finite Element model for the thermal transient analysis was implemented to determine the thermaldistribution in the dam body. Environmental conditions, such as reservoir water temperature at all depths, ambient temperature,and solar radiation were considered in the analysis. Then, structural analysis was conducted to evaluate deflections and stresses inthe dam caused by the temperature profile. The thermal analysis results indicated that the upstream face is strongly affected byreservoir water temperature, while air temperature and sunlight mostly affect the downstream and crest faces. The solar radiationincreases the concrete surface temperature by about 2 ? to 7 ? above the ambient temperature and causes nonuniform temperaturedistributions on the dam faces. Though prior literature shows significant effects of seasonal temperature variations on dam behavior,the structural analysis results in this paper show that the thermal loads contribute very little to the stresses and deflections of a damin Thailand. |
