桩基布置对高桩码头撞击力分配的影响

通过建立包含船、护舷、码头的有限元模型,给定船舶的靠泊速度模拟了船舶靠泊的全过程,得到更符合实际情况的船舶撞击力变化曲线和码头结构的动力反应。研究发现因为叉桩扭角的影响,横向的船舶撞击力在码头较薄弱的纵向也会产生较大的纵向力,最大可达撞击力峰值的6%~8%,这是规范所不曾考虑的。通过对比5种不同的桩基布置方式的分配系数,可得出全对称布置方式优于非对称布置方式的结论。

Influence of different wharf pile arrangements on impact force distribution

On the basis of a finite element model including ship, fender and wharf structure, the whole progress of ship＇s berthing was simulated according to a given velocity. Thus the calculation results of ship impact force and structure dynamic response are more in line with the actual situation. Because of the twist angle of the fork pile, the transverse impact force produces a longitudinal force in the weaker direction of wharf, and the maximum value of the longitudinal force is 6% to 8% of the impact force＇s peak value. By comparing the distribution coefficients of five different pile arrangements, it is concluded that the fully symmetrical arrangement is better than asymmetric arrangement.