基于不同地震力偏角的一阶边坡稳定性分析

The First Slope Stability Analysis Based on Different Seismic Force Angle

针对一阶边坡在地震力作用下的稳定性问题,在毕肖普法中考虑受地震力影响产生的切向力和竖向力,建立一阶边坡受力模型.对不同地震力偏角范围内一阶边坡安全系数计算公式进行推导.编写VB工程计算软件进行迭代计算,得出在不同地震力偏角时一阶边坡的安全系数和最小安全系数以及安全系数在不同地震加速度及震动时刻的变化规律,为一阶边坡抗震设计提供重要的参考依据.

For the problem of the first slope stability in the force of the earthquake, the form of vertical force and horizontal force in earthquake are considered in the Bishop, and the stress model for linear slope is built. Safety factor of slope with varies ranges of different seismic force angle is derived. VB engineering software is programmed to get the safety factor of slop and the corresponding angle through iterative calculations, which provides important reference basis for the seismic design of slope.