Abstract The ‘press-in’ method is a piling technique by which a pile is installed with a static jacking force while a reaction force is obtained from previously installed piles. The applicable ground conditions for this method have been significantly expanded by the ‘Rotary Cutting Press-in (RCP)’ method, whereby a vertical jacking force and a torque are applied simultaneously onto a pile with cutting teeth on its base while water is injected around the pile base. In this paper, a method to estimate the base capacity of RCP piles is proposed based on the UWA-05 framework. The proposed method utilizes CPT (cone penetration test) or SPT (standard penetration test) results as the input parameters and estimates the plugging condition (Incremental Filling Ratio, IFR) from these results. Four static load tests on open-ended RCP piles are shown to have been predicted well by the proposed method in terms of the base capacity, regardless of the embedment depth into the bearing stratum.

中文翻译：

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旋切压入法安装的开口管桩基础承载力评估

摘要 “压入”法是一种打桩技术，通过静态顶升力安装桩，同时从先前安装的桩中获得反作用力。通过“旋转切割压入（RCP）”方法，该方法的适用地面条件得到了显着扩展，其中垂直顶升力和扭矩同时施加到具有切割齿的桩上，同时向周围注入水桩基。本文提出了一种基于UWA-05框架的RCP桩基础承载力估算方法。所提出的方法利用CPT（锥入度试验）或SPT（标准入度试验）结果作为输入参数，并根据这些结果估计堵塞条件（增量填充率，IFR）。