深水港码头高承台桩土共同作用数值模拟分析

某深水港码头方案设计提出了3种结构形式:斜坡堤结构、单排斜顶桩板桩、双排斜顶桩板桩。本文采用平面弹塑性有限元法进行码头施工过程模拟,重点研究了码头平台沿水平方向位移、桩身轴力与弯矩分布,并选取了具有典型性的2个断面,持力层分别为微风化花岗岩层与粘土层,侧重进行了不同方案比较。计算结果很好地反映出了高承台桩基受力变形特点,并总结出高承台桩桩土共同作用变形的几点规律,可为同类工程的建设提供参考。

Numerical modeling of pile-soil interaction in pile-supported pier of a harbor

Pile-supported pier of a harbor was designed as one of three types of structure:project of sloping dike,project of one row of inclined supporting piles,project of two rows of inclined supporting piles.The construction process of pile-supported pier was simulated by a plane finite element method(FEM)with a elasto-plastic constitutive relation of soil.The horizontal displacement in front of pier and distribution of axial force and moment of piles were studied.Two representative sections were chosen to compare different schemes,the supporting layers of which were weak-weathered granite and clayey soil respectively.The results reflected commendably the stress and distortion character of the pile-supported pier.Hereby,some rules about the pile-soil interaction in the pier structure were summarized.