不规则桩基大平台数值分析与应用

桩基础平台在沿海软土地基中应用广泛。对某不规则桩基平台进行数值模拟,利用ANSYS有限元分析软件对某一大平台工程进行三维有限元建模,选取合适的接触模型模拟桩-土相互作用,在施加设计荷载后对模型进行整体运算。结果表明,模型中大部分桩体在桩-土相互作用下其桩节点高程12. 5 m附近摩阻应力达到最大,其中少数摩阻应力最大值发生于桩节点高程10或15 m处;各桩桩身摩阻应力沿着水平荷载合力方向不断增加。

Numerical analysis and application of large platform with irregular pile foundation

Pile foundation platform is widely used in coastal soft soil foundation.We carry out the numerical simulation of an irregular pile foundation platform,firstly establish the three-dimensional finite element model of a large platform project by using ANSYS finite element analysis software,select a suitable contact model to simulate the interaction of pile and soil,and carry out the whole operation of the model after applying the design load.The results show that in the model,the maximum friction stress near the height of the pile height 12.5 m is reached under the pile-soil interaction,and the maximum of the few friction stresses occurs at the height of 10 m or 15 m at the pile height.The frictional stress of piles increases continuously along the direction of horizontal load.