Cantilever Pile Wall (CPW) is one of the cost-effective retaining structures supporting excavations. In this study, a series of nine centrifuge tests in 70 g acceleration were conducted to study the influence of different geometrical properties including pile space ratio (S/D; S: pile center to center spacing and D: diameter of the pile) and pile embedment depth ratio (L/H; L: length of the pile and H = excavation depth) on the wall lateral displacement, pile bending moment and backfill settlement. Centrifuge results revealed that a decrease in pile space and an increase in the embedment depth of piles reduced backfill settlements of CPW. The maximum bending moment approximately occurred in the same depth of excavation irrespective of piles’ space and embedment ratios. Furthermore, the maximum lateral displacement of CPW considerably decreased as the embedment depth ratio reaches a value of about 1.7. In this regard, increasing the value of L/H from 1.4 to 1.6 led to an impressive decline in wall lateral displacement about 68.7%, but this decline was just 3% while L/H was increased from 1.6 to 2. However, more increase in embedment depth of pile slightly increased the maximum bending moment of the piles. Moreover, the evaluation of these experiments provided a deeper understanding of the behavior of CPW. Additionally, safety factors of CPW models were calculated with conventional slice methods which showed an impressive agreement with centrifuge test results.

悬臂桩墙（CPW）是支持挖掘的经济高效的固定结构之一。在这项研究中，以70 g加速度进行了一系列九次离心试验，以研究不同几何特性的影响，包括桩空间比（S / D；S：桩心与中心间距以及D：桩的直径）和桩埋深比（L / H ; L：桩长和H =开挖深度）对墙体的侧向位移，桩的弯矩和回填沉降。离心结果表明，桩间距的减小和桩的埋深的增加会减少CPW的回填沉降量。最大弯曲力矩大约发生在相同的开挖深度中，而与桩的空间和埋深比无关。此外，随着埋深比达到约1.7，CPW的最大横向位移将大大降低。在这方面，将L / H的值从1.4增加到1.6导致墙体侧向位移显着下降约68.7％，但是当L / H下降时仅为3％从1.6增大到2。但是，桩的嵌入深度的增加会稍微增加桩的最大弯矩。此外，对这些实验的评估提供了对CPW行为的更深入的了解。此外，CPW模型的安全系数是使用常规切片方法计算的，与离心测试结果显示出令人印象深刻的一致性。