山区特大公路钢桁梁斜拉桥架设方案研究

Erection Scheme Research of Super Highway Steel Truss Girder Cable-stayed Bridge in Mountain Area

对山区特大公路钢桁梁斜拉桥施工方案进行比选研究,首先,对适用山区特大跨径钢桁梁斜拉桥的总体施工工艺进行详细阐述。然后从结构施工安全性、大型临时结构用量、施工工期、施工可行性及优缺点等方面进行全面详细的比选研究,最终得出最适宜山区特大公路钢桁梁斜拉桥忠建河大桥的施工方案为双悬臂对称施工。

In this paper,the construction schemes for super highway steel truss girder cable-stayed bridge in mountain area were compared and selected. First of all,the overall construction process suitable for large-span steel truss cable-stayed bridge in mountain area was elaborated. Then a comprehensive and detailed study of the structural construction security,large amount of temporary structures,construction period,construction feasibility,advantages and disadvantages,etc. were done,at last it was found the most suitable scheme for cable-stayed steel truss girder in mountain area.