Vertical Spacings Effect on the Anchorage Behavior of Three Inclined Anchors in Silty Sand
| Autor: | LAI, YI-CHEN, 賴奕臻 |
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| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 Ground anchors are usally to be served as earth structure. Therefore, the understanding of anchorage behavior is demanded. Numerous researches investigate the anchorage behavior of the anchors. This study adopts numerical method to investigate the anchorage behavior of three vertical-aligned inclined anchors in silty sand. The anchor test site is located at Jhangbin Industrial Park in Lugang, Changhua, and the test results are used to verify the applicability of the numerical method. The constitutive model named SHASOVOD (A continuous strain hardening-softening and volumetric dilatancy model) and the parameters needed for the model are adopted, in conjunction with FLAC3D software to carry out the numerical analyses. The numerical results reveal that no matter which anchor dimension is analyzed, when spacing between anchors is 10D (where D is the anchor diameter), the interference of the anchors virtually disappear. When anchor spacings are 4D, the efficiency is about 85%; when spacings are 10D, the efficiency is approximately 98%. As vertical spacing between anchors is 4D, the interference of anchors is evident; as the spacing is 10D, the interference vanishes. In addition, this study suggests that both the overburden depth and free length exceed 2m to avoid the yield zones develop to ground surface and/or to diagram wall. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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