The Study of Numerically Analytical Method on the Stability of Soil Slopes

• Main Authors: Jaw-cheng chen, 陳肇成
• Other Authors: Tien-kuen Huang
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/48286477699678217588

博士 === 國立中興大學 === 土木工程學系 === 90 === The stability analysis of soil slopes is in general adopted by the limit equilibrium method and limit analysis method. However, there exist the shortcomings for these two methods due to inherently simplified assumptions. With the development of soil models, the stress-strain procedure has been used in the stability analysis of soil slopes for many years. But its application for obtaining the safety factors of soil slopes seems not to have received wide attention. Furthermore, the research and development for the slip potential within the soil slope, the effects of pore pressure and seepage on the The stability of soil slopes still remain limited. Therefore, how to properly considering the effects of pore pressure and seepage in using the stress-strain procedure to analyze the soil slope and study the mechanical behavior along the slip surface are worthy researching. In this paper, the finite element method is used with suitable consideration in the effects of pore pressure and seepage, and with the provision of a special scheme to search for the critical slip surface to perform the effective-stress stability analysis of soil slopes and earth dams. Typical examples of soil slopes and real case of earth dam are used to illustrate the proposed procedure. The results of the proposed method are also compared with those from the Bishop’s Simplified Method.