箱形梁桥横向内力计算的计算机方法

A Computer Method of Calculating the Transversal Internal Force in Box Girder Bridge

针对箱形梁桥设计中桥面板横向内力计算问题进行分析，探讨了考虑桥梁纵向挠曲作用对横向内力计算的影响，以及在横向框构中考虑材料在应力─应变的线性与非线性关系两种不同状况下内力分布的变化，提出了箱形梁桥横向内力在工程设计中的计算机分析方法，编制了计算程序，并对实例进行计算比较。

This paper is intended to study and analyze the problem of calculating the transversal internal force of the top plate in the design of a box girder bridge,and the effect of the vertical deflection of a bridge is taken into account. The difference of internal force is also studied between linear and nonlinear proportions of stress and strain of the material used in the construction of the transversal frame. In this paper, a simple and practical computer method is put forward which can be casily used as a calculating method to work out the transversal internal force in the design of a box girder bridge.The computer program has been completed and used to test a practical example by which the results are compared and analyzed.