按广义坐标建立具有移动质量的箱梁振动方程

THE DERIVATION OF THE VIBRATION EQUATION FOR THIN-WALLED BOX GIRDER CARRYING MOVING MASS USING GENERALIZED COORDINATES

在文献[5]讨论移动荷载作用于箱梁的基础上,进一步考虑了移动质量对梁的动力作用;推导、建立了与前者性质、形式完全不同的变系数振动方程,并用数值方法求得解答。算例验证了本文建立的振动方程是正确的。

In this paper, on the basis of the investigation of the action of the moving loading onto a box girder [ 5], the dynamic action of the moving mass onto a box girder is investigated further. A kind of vibration equation with variable coefficients has been derived which is different in nature and in form and the solution of which has been obtained by numerical method. By the numerical example in this paper it is verified that the vibration equation in this paper is correct.