Bishop法自动搜索均质边坡最危险滑动面

Automatic searching most dangerous sliding surface of a homogeneous slope based on Bishop method

对于均质的以及没有断裂面的岩坡,在一定条件下可用圆弧法进行稳定分析。文中应用简化的Bishop法,采用一维搜索的黄金分割点法自动搜索均质边坡的最危险滑面,运用AutoCAD内置的VBA语言进行编程,并对某一均质边坡进行实例分析。计算过程表明,该方法求解虽然计算工作量比较大,但精度比较高,在其计算过程中可了解最危险滑弧圆心的分布规律,不但适用于简单均质边坡,同时对复杂的非均质边坡也具有一定的指导意义。

For homogeneous and no the fault of rock slope, arc method can be used for stability analysis in some condition. This article applies simplified Bishop method,adopts the golden mean algorithm of one-dimensional search so as to automatic search for most dangerous sliding surface for a homogeneous slope, uses the language of VBA embedded in AutoCAD to program and carries out example analysis for a certain homogeneous slope. The computational procedure shows that although calculation work of this solving method is computationally expensive, the precision of algorithm is high, understand distribution law of the location of center of critical circular failure surface and suitable for simple homogeneous slopes, meanwhile,this method has certain guiding significance for the complex non-homogeneous slopes.