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对于边坡稳定性分析,有限元强度折减系数法正逐渐成为求解边坡稳定分析研究的新趋势,其基本原理是将岩土材料参数、值除以一折减系数,得到一组新的、值,然后,代入有限元进行试算,通过不断的调整折减系数,当计算结果“正好”收敛时,此时的折减系数即为边坡稳定的安全系数。此时,坡体内具有一定宽度塑性区即为边坡失稳时的滑移带。将有限元强度折减法在有限元Adina中进行实现,将计算结果在软件中进行显示,然后根据极限状态判据确定相应的稳定系数。结合具体的工程实例,将不同的极限状态对应的折减系数进行对比,发现稳定系数具有一致性。
For slope stability analysis, finite element strength reduction factor method is becoming a new trend to solve slope stability analysis. The basic principle is to divide the parameters of geomaterials by a reduction factor and get a new set of new , And then enter the finite element for trial calculation. By continuously adjusting the reduction factor, when the calculation result “exactly ” converges, the reduction factor at this time is the safety factor for slope stability. At this moment, the slope has a certain width plastic zone is the slip zone when the slope is unstable. Finite element strength reduction method is implemented in Adina, and the calculation results are displayed in software. Then the corresponding stability coefficient is determined according to the limit state criterion. Combined with specific engineering examples, the different limit states corresponding reduction coefficient are compared and found that the stability coefficient is consistent.