钢杆件极限承载全过程的样条函数解法

Spline Function Solution for the Whole Ultimate Loading Procedures of Steel Members

本文导出了钢杆件极限承载全过程的样条函数分析法，给出了杆件荷载－位移曲线的增量位移迭代求解法。本文方法适用于具有各种不同边界条件和实际初始缺陷的钢杆件的分析计算。算例表明，本文方法具有较高的分析精度和计算效率。

The spline function solution method for the whole ultimate loading procedures of steel members is derived in this paper. The whole load-deflection curves of members are iteratively solved by the incremental displacement method presented in this paper. Various different conditions and practical initial imperfections of members can be taken into account conveniently. Numerical examples show that the suggested method has high accuracy in analysis with satisfactory efficiency.