摘要
基于对浸水膨胀土中水平受荷桩的模型试验研究,得到了桩身变形及桩侧土抗力变化规律。通过对实测桩身内力、位移和桩侧土抗力等进行多项式拟合,得到了浸水膨胀土的p-y曲线族。通过与规范建议的软粘土p-y曲线进行对比分析,发现浸水膨胀土比软粘土具有更高的极限土抗力。根据对软粘土p-y曲线方程的研究,本文建立了浸水膨胀土p-y曲线理论表达式,为浸水膨胀土中水平受荷桩的计算分析提供了可靠的理论基础。
Based on the study of model test on laterally loaded pile which embedded in water- logged expansive soil, the variation laws of the pile＇ s deformation and the lateral soil resistance are ob- tained. The p-y curves of this expansive soil have been got, when the pile＇s internal forces and its dis- placements as well as pile side soil resistances are tested and fitted by polynomial. By analyzing and con- trasting the p-y curves obtained from test and recommended by design standard in soft clay, it is found that the ultimate side resistance of this waterlogged expansive soil is higher than the soft clay. According to the research on the p-y curve equation of soft clay, the theoretical formulas of p-y curves of water- logged expansive soil have been established in this paper. This study provides a reliable theoretical basis for the calculation and analysis of laterally loaded pile which embedded in waterlogged expansive soil.
出处
《公路工程》
北大核心
2014年第3期6-10,37,共6页
Highway Engineering
基金
国家自然科学基金资助项目(50378097)
湖南省自然科学基金项目(14JJ 2105)
关键词
浸水膨胀土
P-Y曲线
水平受荷桩
模型试验
waterlogged expansive soil
p-y curve
laterally loaded pile
model experiment
