满足桩轴向刚度条件的高桩码头桩基计算模型

通过在桩身一定的位置施加一个轴向弹簧，建立高桩码头的桩基计算模型。根据《高桩码头设计与施工规范》中关于桩轴向刚性系数的计算公式，给出了不同情况下轴向弹簧刚度系数大小以及施加位置的计算方法。该方法能满足嵌固点法和m法计算模式下桩基计算模型的轴向刚度相同且与规范规定一致。结合该方法，分别采用嵌固点法和m法建立某高桩码头工程实例的空间有限元模型。计算结果对比表明：桩身轴力、桩顶弯矩、上部结构各构件的内力均十分接近，验证了该方法的合理可行性，可为高桩码头结构计算提供参考。

Pile foundation calculation model of high-piled wharf satisfying pile,s axial stiffness condition

Pile foundation calculation model of high-piled wharf is established applying an axial spring on acertain position of the pile body. According to the calculation formula of axial stiffness coefficient of pile in Designand Construction Code for Open Type Wharf on Piles, a calculation method for the stiffness coefficient and appliedposition of the axial spring in different situations is given. By the method, the axial stiffness of pile foundation modelin imaginary fixing points method and m-method calculation mode are same and consistent with the code. Combinedwith this method, two spatial finite element models for a high-piled wharf engineering example are established byimaginary fixing points method and m-method respectively. The comparison of the calculation results show thataxial force of pile shaft, bending moment at pile top and the internal forces of each component in superstructureare similar. It proves that the suggested method is feasible and reasonable, which serve as references for structurecalculation of high-piled wharf.