铰接斜板桥的一种实用计算方法

本文根据横向铰接料板桥结构力学性能的特点，认为跨内径向弯矩是斜板桥结构设计计算的关键之所在．采用与等跨简支架跨中弯矩相比拟的方法，求出将斜板桥离散为单块板（粱）时的等效荷载横向分配系数．从而将斜板跨内径向弯矩的求解简化为单跨简支架跨中弯矩的计算，解决了由斜板间相互铰接而给计算带来的困难，较其它实用计算法更加简捷、实用．文中给出了一个抖板桥算例，并通过与经典的有限元法、有限条法及其它实用计算方法的计算结果的比较，证实了本文方法的正确性和实用性．

A Practical Calculating method for the Hinged Inclined Bridge Structure

On the basis of the characteristics of the structural mechanics of the cross hinged inclined bridge structure,this paper has decided that the radial monment of the span is the key point of the bridge structure in the design calculation.Using the similar methods of the middle span monment of the same span beam,the equivalent cross loads distribution parameter of the single sheet(beam)of the inclined sheet bridge can be obtained. So the calculation of the radial monment of the inclined bridge is simplified to the calculation of the middle span monment of the one span simple support beam, solving the problem brought in by the hinge.And the method is more simple and practical when compered with other methods.This paper gives an example of the inclined bridge,and through comparation of itS results with those of the finite element methods and finite strap methods and other practical calculation methods,the method given in this paper proves to be accurate and practical.