地震力偏角对有防护措施的公路边坡的抗震稳定性影响

Impact of Seismic Force Angle on Earthquake Stability of Highway Slope with Protection Measures

在毕肖普法中考虑受地震力偏角及边坡防护措施对边坡抗震稳定性的影响,以线性边坡为例,建立力学模型。推导不同地震力偏角范围内边坡安全系数计算公式。编写VB工程计算软件并进行迭代计算,得出防护力不变情况下,不同地震力偏角时边坡的安全系数和安全系数随地震力偏角的变化规律,为边坡抗震设计提供重要的参考依据。

Considering the impact of seismic force angle and slope protection measures on the seismic stability of a slope in Bishop method ,and taking a linear slope for example ,a mechanical model was established .Then the calculation for-mula for the slope safety factors within the range of different seismic force angle was derived .Sinmultaneously ,the VB engineering calculation software was written to make iterative calculation ,and the safety factors and their variation law under certain protection force and different seismic force angle were obtained ,which could provide important references for the seismic design of slope .