Although advances in piling equipment and technologies have extended the global use of stabilizing piles (to stabilize slope or landslide), the design of stabilizing piles remains a challenge. Specifically, the installation of stabilizing piles can alter the behavior of the slope; and the spatial variability of the geotechnical parameters required in the design is difficult to characterize with certainty, which can degrade the design performance. This paper presents an optimization-based design framework for stabilizing piles. The authors explicitly consider the coupling between the stabilizing piles and the slope, and the robustness of the stability of the reinforced slope against the spatial variability of the geotechnical parameters. The proposed design framework is implemented as a multiobjective optimization problem considering the design robustness as an objective, in addition to safety and cost efficiency, two objectives considered in the conventional design approaches. The design of stabilizing piles in an earth slope is studied as an example to illustrate the effectiveness of this new design framework. A comparison study is also undertaken to demonstrate the superiority of this new framework over the conventional design approaches.

尽管打桩设备和技术的进步已经扩大了稳定桩的全球使用范围（以稳定斜坡或滑坡），但稳定桩的设计仍然是一个挑战。具体而言，安装稳定桩会改变边坡的性状。设计中所需岩土参数的空间变异性难以确定，这会降低设计性能。本文提出了一种基于优化的稳定桩的设计框架。作者明确考虑了稳定桩与边坡之间的耦合，以及加筋边坡的稳定性对岩土参数的空间变异性的鲁棒性。所提出的设计框架被实现为一个多目标优化问题，以设计稳健性为目标，除了安全性和成本效率外，还考虑了常规设计方法中的两个目标。以土坡中的稳定桩设计为例，以说明该新设计框架的有效性。还进行了比较研究，以证明此新框架优于常规设计方法。