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碩士論文公告區 |
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| 年度： | 94 | |
| 姓名： | 陳耀東(Yao-Tung Chen) | |
| 論文題目(中)： | 對數螺旋形滑動模式之邊坡穩定分析程式 | |
| 論文題目(英)： | A Numerical Program of the Logarithmic Spiral Sliding Model for Slope Stability Analyses | |
| 摘要(中)： | ||
| 本文採用對數螺旋形滑動模式，並且利用雙螺心曲線來克服互層土壤之不同內摩擦角，使用微軟公司所發展的EXCEL VBA(Visual Basic for Application)作為程式設計語言，探討不同條件下土壤邊坡穩定之安全係數及臨界滑動面。邊坡土壤材料可分為 | ||
| 摘要(英)： | ||
| To investigate the mechanism of slope stability, this study quoted the theorem of logarithmic spiral mode, utilized the double spiral curves to overcome the double-layer slope with different friction angle. A numerical program developed by VBA language was then established to analysis the stability of soil slopes. The research especially focuses on the safety factor and the critical slide circle. The materials of slopes were divided into three types in this study, a cohesionless soil, a cohesion soil, and a soil with both cohesion and friction angle. Moreover, a homogenous soil slope and a double-layer slope are concerned as well. To verify the applicability of the developed program VBA, analyzed results by the program are compared with those by STABL program. It was found, the results analyzed by developed program are close to those calculated by STABL program. The failure circle of a homogenous slope with cohesionless soil belongs to a shallow failure slope. However, the failure type of a homogenous slope with both cohesion and friction angle depends on the shear strength factor . No matter with any soil type, when slopes with double layers, the type of failure circles are govern by the weaker layer. It develops different failure mode, if a slope which the bottom layer is weaker than the upper layer. A borderline between toe circles and base circles was established based on the shear strength factor and the slope angle 。When the shear strength factor =0 and a slope angle greater than 53o ， the toe circle can be found. If the slope ratio increases, a toe circle will occur only if the shear strength factor increases. Moreover, if the equals to 0, a shallow toe circle can be found only if the is greater than 60o. When is a constant, a linear relation was found between safety factor FS and shear strength parameters (c, ). Finally, this study provides a series of figures, including the positions of slide circles and safety factor for soil slopes, based on the results of numerical analyses. |
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| 檔案： | 沒有相關檔案 | |
| 相關連結： | http://ethesys.lib.cyut.edu.tw/ETD-db/ETD-search-c/view_etd?URN=etd-0814106-080516 | |