Liquefaction of foundation soil causes significant damage to infrastructures. The sand compaction pile (SCP) method is a countermeasure against liquefaction to densify the ground by installing dense sand piles. In recent years, an innovative method has been developed to install sand piles into the ground at any angle. In this study, a series of dynamic centrifuge tests are carried out to investigate the effects of the angle of the SCP improvement zone on mitigating the liquefaction-induced settlement of embankment crests. The lateral displacement beneath the embankment toes is mitigated by the presence of the improvement zone installed in the foundation ground. In particular, the case with a 50° improvement zone is the most effective in mitigating lateral displacement and contributes to the lower settlement of the embankment.

地基土液化对基础设施造成严重破坏。压沙桩（SCP）法是一种通过安装密集的沙桩来使地面致密的液化对策。近年来，开发了一种创新方法，可以将沙桩以任何角度安装到地下。在这项研究中，进行了一系列动态离心试验，以研究 SCP 改进区的角度对减轻路堤顶部液化引起的沉降的影响。路堤趾部下方的横向位移通过安装在地基中的改善区的存在得到缓解。尤其是具有 50°改进区的情况在减轻横向位移方面最有效，并有助于降低路堤的沉降。