This study presents a theoretical framework for monitoring the stability of a slope in an efficient and cost-effective manner. The optimal arrangement of monitoring points is achieved using strength reduction finite element analysis and redundancy optimization analysis. Using a highway slope in South China as a case study, it demonstrates that the developed theoretical framework has the capability of designing the three-dimensional distribution of the monitoring points within the slope in an optimal way. In addition, it shows that, with the increase of the reduction coefficient, the plastic zone inside the slope gradually expands with the decrease in the shear strength of the soil. Furthermore, the simulation results suggest that the horizontal displacement of the slope reaches to its maximum value in the region around 12 m from toe of the slope.

本研究提出了一种以有效且具有成本效益的方式监测边坡稳定性的理论框架。通过强度折减有限元分析和冗余优化分析，实现监测点的优化布置。以华南某公路边坡为例，论证了所开发的理论框架能够对边坡内监测点的三维分布进行优化设计。此外，还表明，随着折减系数的增加，边坡内部的塑性区随着土体抗剪强度的降低而逐渐扩大。此外，模拟结果表明，边坡的水平位移在距坡脚12 m左右的区域内达到最大值。