山区大跨双层钢桁梁斜拉桥总体方案设计

Design of Overall Scheme for a Large-span Double-layer Steel Truss Girder Cable-stayed Bridge in Mountainous Area

摘要:

某山区大桥位于宜昌市五峰县渔洋关附近，是宜都至来凤高速公路（宜昌段）控制性工程，亦是省道242渔洋关绕城段公路关键工程。大桥桥位跨越典型的深切“V”型沟谷，拟采用主跨480 m双层钢桁梁斜拉桥。介绍了大桥的工程概况、主要技术标准及工程特点，并对大桥的总体方案设计进行了论述。

Abstract:

A mountain bridge is located near Yuyang Pass, Wufeng County, Yichang City, is a control project of Yidu - Laifeng Expressway (Yichang Section) and is also a key project of Yuyang Pass Ring Highway in Provincial Highway 242. The project is proposed to adopt a 480-m span double-layer steel truss girder cable-stayed bridge to span a typical deep-cut V-shaped valley. The project overview, main technical standards and engineering characteristics of the bridge are introduced, and the design of overall scheme for the bridge is discussed.