Slope stability analysis under seismic force using programmable stability number

• Main Authors: Sung-Chu Wang, 王崧竹
• Other Authors: Cheng-Ming Ma
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/63295465516063727771

碩士 === 義守大學 === 土木與生態工程學系碩士班 === 99 === Taiwan belongs to the Asian earthquake-prone areas, and due to natural disasters in recent years like the earthquake in Yunnan, China and Japan’s 311 earthquake, etc. Taiwan, however, is also in this seismic belt. Additionally Taiwan is mountainous area with many slopes, therefore the slope safety factor in design is a major concern and very important. This study is based on the Taylor’s method in 1973, in which the stability number was related with the slope angle, and designed to analyze the safety factor of a simple homogeneous soil slope with the application of seismic forces (but without consideration of ground water, anchor forces etc.), and a computer program based on this study is developed. With this program, it will help to reduce the estimating error, and the need to repeated attempt and therefore very time-saving. With the use of STABL6 in the studies of slope stability analysis, sorting out the relationship between the stability numbers and slope angle with different friction angles Phi ranging from 10° ~ 25°. This program can be quickly simulated to get the factor of safety with different seismic forces. Without the requirement of the use of a large number of calculation and iterations, as long as the input of slope angle Beta, height H, the soil unit weight Gamma, soil friction angle Phi, soil cohesion C and seismic forces are given, one can take advantage of this program to quickly get the the safety factor of the slope.