Experimental load-transfer curves of laterally loaded piles in Nak-Dong River sand
Experimental load-transfer curves of laterally loaded piles in Nak-Dong River sand
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DOI：
10.1061/(asce)1090-0241(2004)130:4(416
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发表时间：
2004-04-01
影响因子：
3.9
通讯作者：
Kim, YS
中科院分区：
文献类型：
--
作者：
Kim, BT;Kim, NK;Kim, YS
本文介绍了位于韩国的洛东江砂中的桩在单调横向荷载作用下的模型试验结果。研究了桩的横向抗力、安装方法的影响以及桩头约束条件等。该研究导致了横向荷载桩的荷载传递曲线（p-y曲线）的建议。通过与现有模型荷载试验的比较，确定了修正系数，以允许不同的桩安装方法和不同的桩头约束条件。提出的p-y曲线与现有的曲线进行了比较，并与实验数据进行了评价。对极限侧阻力和路基模量进行了研究和讨论。结果表明，与现有的p-y曲线模型相比，本文提出的p-y曲线在形状和大小上都有很大的不同。通过实测和预测桩的横向性状，表明考虑安装方法和桩头约束条件的p-y曲线模型的精度是合理的。
This paper describes the results of a model testing of the piles embedded in Nak-Dong River sand, located in south Korea, under monotonic lateral loadings. A number of features were studied, including the lateral resistance of piles, the effect of the installation method, and the pile head restraint condition. The study has led to recommendations of the load-transfer curves (p-y curves) for laterally loaded piles. Modification factors were developed to allow for both a different pile installation method and different pile head restraint conditions by comparison to existing model load tests. The proposed p-y curves were compared to the existing curves and were evaluated with the experimental data. The ultimate lateral soil resistance and subgrade modulus were investigated and discussed. It is revealed that the proposed p-y curves show significant differences in shapes and magnitudes when compared with existing p-y curve models. The accuracy of the proposed p-y curve model, considering the effect of installation method and pile head restraint condition, is very reasonable as shown by comparing measured and predicted lateral behavior of the pile.