Cyclic Lateral Loading Tests on Model Pile in Saturated Sand
| Autor: | Chun-Hsiang Yang, 楊鈞翔 |
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| Rok vydání: | 2017 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 In recent years, Taiwan has tried to develop green renewable energy. Because Taiwan is an island and has good wind energy potential, offshore wind turbine has become the focus of renewable energy development. At present offshore wind turbine foundation commonly used form of monopile, in the life cycle need to resist wind, waves, earthquakes and other cyclic lateral force. Therefore, this study uses in situ Zhunan sand to remold the dry sand and saturated sand specimen, and use the model pile to carry out the lateral loading tests. The test results will use regression analysis to obtain the pile response, and compare the difference between the piles in the dry sand and the saturated sand specimen. In this research, each type of specimen were carried out two sets of ultimate lateral pile load test. According to test results to determine the loading amplitude of one-way cyclic lateral pile load tests. Four sets of one-way cyclic lateral pile load tests will be performed with different stress level of cyclic load, the number of cycle of cyclic loading up to 10,000 times, to obtain permanent displacement and equivalent stiffness of pile under long-term cyclic lateral loading. The p-y curve of the pile-soil system is obtained by regression analysis, and the behavior of pile-soil interaction is discussed. From the test results, it is found that the saturated sand specimen is relatively weak, so that it can not provide a large soil resistance to constraint the pile displacement, and the coefficient of subgrade reaction also has a greater attenuation. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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