能量近似法在深水长桩自由站立分析中的应用

Pile Stick up Analysis with Energy Approximation Method

由于欧拉公式的局限,目前深水长桩自由站立分析中考虑桩身重量时是将自由站立桩段简化为统一壁厚(一般取最薄壁厚)来计算的,计算结果偏保守,导致所需桩段壁厚往往较实际要厚。从铁木辛柯弹性稳定理论为基础,采用能量近似法来计算桩自由站立状态轴向许用荷载,实现了对钢桩壁厚的优化,可应用于实际工程。

Due to the limitations of Euler formula,calculation results are conservative as the thinnest wall thickness is applied to consider pile weight in the pile stick up analysis.Based on the Timoshenko beam theory,axial allowable load for pile stick up was calculated using energy approximation method to optimize the wall thickness of steel pile,which has applied to the practical projects.