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一、前言在荷载作用下,用力法或变位法计算变截面连续梁的内力及挠度相当冗杂。目前,此类平面杆件结构多用计算机来完成内力、变位计算,所用程序都是有限元法编制而成。本文用大家熟知的挠度法来计算变截面连续梁的内力、挠度。此法在求变截面连续梁的挠度曲线微分方程的解时,需用样条函数来完成积分运算。用样条函数来计算变截面连续梁的内力、挠度,只需把变截面梁的截面惯性矩I_1分段计算(变截面部分分段长视计算精
I. INTRODUCTION Under the action of load, the internal force and deflection of continuous beam with variable section are quite complicated by force method or displacement method. At present, the use of such planar rod structure computer to complete the internal force, displacement calculation, the procedures used are prepared by finite element method. In this paper, we use the well-known deflection method to calculate the internal force and deflection of variable section continuous beams. When this method is used to solve the solution of differential equations of deflection curves of continuous beams, the spline function is needed to complete the integral calculation. Spline function to calculate the variable cross-section of the continuous beam internal force, deflection, simply cross-section of the cross-section of the moment of inertia I section piecewise calculation