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首页> 外文期刊>Canadian Geotechnical Journal >Load transfer of fibre-reinforced polymer (FRP) composite tapered piles in dense sand
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Load transfer of fibre-reinforced polymer (FRP) composite tapered piles in dense sand

机译：纤维增强聚合物（FRP）复合锥形桩在致密砂土中的荷载传递

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摘要

This paper describes an experimental study conducted using a large, laboratory-scale testing facility to test pile segments at different stress levels. The objectives of the study were twofold: to examine the load-transfer mechanism of tapered piles in compression, and to evaluate the effect of pile material on pile performance characteristics. The results of axial compressive loading tests on 26 pile load tests were presented using fibre-reinforced polymer (FRP) concrete composite tapered piles and steel piles. Two installation techniques were used, including conventional head driving and toe driving using a new technique. Piles were tested at different confining pressures to represent a pile segment at depths of 4.0 and 8.0 m. The load distribution along the pile shafts was measured and the results were compared with those from an analytical solution in terms of the taper coefficient K-t. The comparison showed reasonable agreement between K-t values established from the experiments and those obtained from the analytical solution. The measured toe resistance of tapered and cylindrical piles was compared with those from the analytical solution. A simple rational approach was proposed for the design of tapered piles.
机译：本文介绍了使用大型实验室规模的测试设施进行的实验研究，以测试不同应力水平下的桩段。研究的目的是双重的：检查受压锥形桩的荷载传递机理，并评估桩材料对桩性能特征的影响。给出了使用纤维增强聚合物（FRP）混凝土复合锥形桩和钢桩进行的26个桩载荷试验的轴向压缩载荷试验结果。使用了两种安装技术，包括常规的头部驱动和使用新技术的脚趾驱动。在不同的围压下对桩进行了测试，以代表桩段在4.0和8.0 m的深度。测量沿桩身的载荷分布，并将其结果与锥度K-t的分析结果进行比较。比较表明，实验确定的K-t值与分析溶液得到的K-t值之间存在合理的一致性。将测得的锥形和圆柱形桩的趾趾阻力与分析溶液的趾趾阻力进行比较。提出了一种简单合理的锥形桩设计方法。

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