大跨斜拉桥上无缝线路计算软件开发及应用

摘要

In this thesis, through analyzing the stress states of the structures on a cable-stayed bridge, a model of beam-rail interaction of continuous welded rail on a cable-stayed bridge was established based on beam-rail interaction theory, so as to research the pattern of beam-rail interaction. Further on, in order to improve both the computing speed and work efficiency, the software named CSBCWR was developed for calculating the continuous welded rail on a cable-stayed bridge, based on ANSYS software and via FORTRAN programming language to do second development. This CSBCWR software can be used for calculating and analyzing the additional expansion force, the bending force, the braking force, the rail-breaking force, the relative displacement between the rail and beam, the deck displacement and the additional axial force of stay cables;and the computing process is highly efficient and convenient.%基于梁轨相互作用原理,通过分析斜拉桥桥上结构受力特点,建立了斜拉桥桥上无缝线路梁轨相互作用模型,用于分析其梁轨相互作用规律。为提高计算速率和工作效率,以有限元软件ANSYS为平台,利用FORTRAN语言进行二次开发,编制了斜拉桥桥上无缝线路计算软件CSBCWR,此软件可用于钢轨伸缩附加力、挠曲力、制动力、断轨力、梁轨快速相对位移、桥面位移及斜拉索轴向附加力的计算分析,计算过程高效快捷。