Abstract

The design and analysis of Cable-Supported Bridges (CSBs) with Road and Railway Traffic (RRT) are very complex due to the many boundary conditions and structural options, e.g. the railway tracks and road lanes can be arranged on one level, two levels, staggered levels or mixed levels; the main girders may be truss girders, a single box girder, separated box girders or a combined truss–box girder. With the experience of several national and international competitions, this paper describes the main principles and the conceptual design of CSBs with RRT, mainly focused on the selection of the relative location of road and railway, the options for the main girders and the relative locations of pylon legs. Three CSBs with RRT are presented in more detail to demonstrate how to face the challenges and solve boundary constraints, and to meet the requirements of the client and sustainable development at the conceptual design stage.

摘要

由于存在许多边界条件和结构选项，例如铁路轨道和公路车道可以布置在一层、两层、交错层次或混合层次；主梁可以是桁架梁、单箱梁、分离箱梁或组合桁架箱梁。本文结合多次国内外比赛的经验，阐述了带有RRT的CSBs的主要原理和概念设计，主要集中在公路和铁路相对位置的选择、主梁的选择和主梁的相对位置。塔腿。三个带有 RRT 的 CSB 更详细地展示了如何面对挑战和解决边界约束，