全直桩码头横向水平力分配计算方法探讨

高桩码头桩基的设计需要考虑作用在码头上水平荷载的影响. 该文分析了国内外关于高桩码头水平力分配的计算方法, 针对全直桩码头的特点, 假定码头上部结构为刚体, 码头平台在水平力作用下绕刚度中心转动, 并考虑桩顶纵向变位的影响, 推导得出了全直桩码头水平力分配的计算公式. 结合工程实例, 将该文公式与有限元方法、我国港工规范查表法进行了比较分析. 计算结果表明该文公式与有限元方法所得结果吻合较好, 与规范查表法所得结果最大相差约8%.

CALCULATION METHODS FOR THE DISTRIBUTION OF LATERAL FORCE ON AN ALL VERTICAL-PILED WHARF

Lateral loads must be considered in the pile design of high-piled wharfs. Based on the analysis of the characteristics of an all vertical-piled wharf and existing methods for calculating the distribution of lateral force on high-piled wharfs, a formula for calculating the distribution of lateral force on an all vertical-piled wharf is derived by assuming that the superstructure of the wharf is a rigid body. In this case, the rotation center of the wharf deck under the lateral force is also the center of rigidity, and the longitudinal displacement of the piles caused by rotation can not be neglected. The derived formula, the finite element method (FEM) and the look-up table method in China’s Code of Port Engineering are all applied to the same real engineering case. The comparisons of the results show that the derived formula agrees well with the FEM, while the maximum difference between the derived formula and the look-up table method is about 8%.