游艇码头定位桩受力增大系数计算和分析

摘要

It is difficult to determine the degree of influence theoretically because of the complex factors affecting the loading augmentation coefficient of single positioning pile in marina.We used the small deflection theory,selected the diameter and free length of pile as the variable parameters,provided calculation methods of single pile loading augmentation coefficient of two types of steel pipe pile and PHC pile,also listed the coefficient under various combinations of parameters,and studied the rules,which provides a reference for calculation and reasonable selection of the loading augmentation coefficient of single pile in the design of the marina positioning pile.The results show that the loading augmentation coefficient increases with the increase of the diameter of pile,decreases with the increase of the free length of the pile,and both of them are discrete.%游艇码头定位桩单桩受力增大系数由于影响因素复杂,很难从理论上确定其影响程度.运用小挠度理论,选取定位桩直径和自由长度为变量参数,提供了钢管桩和PHC桩2种桩型单桩受力增大系数的计算方法,同时也列出了各种参数组合下的增大系数,并研究其规律,为游艇码头定位桩设计时单桩受力增大系数的计算和合理选取提供参考.研究结果表明:受力增大系数随桩直径的增大而增大,随桩自由长度的增大而减小,且均较为离散.