Abstract

The piled ring foundations offer an economic foundation system. Piled ring foundation systems can be used under structures like chimneys, OHRS, and towers. In this paper, an experimental study was carried out to understand the behavior of ring footing (with/without RDFS cushion) and piled ring foundation (with/without RDFS cushion) in soft clays. Total 57 model tests were carried out to comprehend the effect of parameters like variation of radii ratio of ring footing, spacing between piles, a diameter of pile, length to diameter ratio, RDFS cushion on the behavior of the piled ring foundations. The outcome of this study helped in understanding the effect of these factors on axial stiffness, load sharing, load improvement factor, and settlement reduction ratio. From the results of the experimental study, it was found that the ultimate load carrying capacity of the ring and piled ring foundation with RDFS cushion was significantly higher than that of ring footing and piled ring foundation without RDFS cushion. It was also observed that the behavior of ring footing with RDFS cushion resembles that of circular footing.

摘要

桩环基础提供了一个经济的基础系统。桩环基础系统可用于烟囱、OHRS 和塔等结构下。在本文中，进行了一项实验研究，以了解软粘土中环形基础（有/无 RDFS 垫层）和桩环基础（有/无 RDFS 垫层）的行为。共进行了 57 次模型试验，以了解环基半径比、桩间距、桩径、长径比、RDFS 垫层等参数对桩环基础性能的影响。这项研究的结果有助于理解这些因素对轴向刚度、载荷分担、载荷改进因子和沉降减少率的影响。从实验研究的结果来看，研究发现，带RDFS垫层的环基和桩环基础的极限承载能力显着高于无RDFS垫层的环基和桩环基础。还观察到，带有 RDFS 缓冲垫的环形基础的行为类似于圆形基础的行为。