摘要
讨论了三次样条插值曲线的弧长算法，并将其应用于工程实际，解决了水电站尾水管钢筋长度计算问题。
A computing method for arc length of cubic spline interpolation curve is dealt with,and its application in practical engineering is descussed.The computing problem about the length of reinforced bar of draft tube in the hydroelectric power station is solved.And the theoretical basis for engineering construction is provided.
关键词
尾水管
样条插值
水轮机
弧长算法
approximate integral
Romberg integral method
trapezoidal formula
frame reinforced bar
