公轨两用斜拉桥——闵浦二桥总体设计分析

The Overall Design and Analysis of Minpu Bridge II- A Cable-stayed Dual-purpose Bridge for Highway and Light Rail Traffic

为了对上海闵浦二桥——公轨两用一体化特大双层斜拉桥进行设计,并使其达到受力合理、结构优化的效果,采用平面有限元模型对该桥进行了总体的设计分析。为此,针对该结构的特点,简化了结构。通过确定一套相应的设计计算原则,计算得出了所关心的各方面的计算结果,并由结果进行判断可知,该结构的总体设计是安全、可行和合理的,同时证明所采用的设计原则,特别是调索原则是符合结构要求和特点的。

For the design of Shanghai Minpu Bridge II, a super large double-decked cable-stayed bridge for both highway and light rail traffic, to reach a rationally stressed and structurally optimized result, FEM is adopted to make an overall analysis of the bridge design, and simply the structure according to the features thereof. With a set of principles for calculation determined corresponding to the design, relevant results are obtained, showing that the overall structural design is safe, feasible and rational, and proving that the design principles, especially those for cable force adjustment, are in compliance with the structural requirements and features.