重庆长江鹅公岩大桥西锚碇设计

On Design for West Anchor of Chongqing Changjiang River Egongyan Bridge

重庆长江鹅公岩大桥为三跨连续加劲钢箱梁悬索桥,主跨径600m。悬索桥锚碇承受主缆巨大反力,是悬索桥的关键部位。经综合分析桥址的地形、地貌、地质等自然条件及总体设计的要求等,经综合分析比较决定长江西岸侧采用三角形刚构重力式锚碇并介绍重力式锚碇的设计要点。

With the main span of600m,Chongqing Changjiang River Egongyan Bridge is a3-span suspension bridge of continuous stiffened steel box girder.Bearing the tremendous reacting force of main cable,anchorage is the key part of the suspension bridge.Based on the comprehensive analysis and comparison on natural conditions such as land form,land feature and geology etc at which the bridge located and the requirements of general layout etc,it is decided to apply triangular rigid frame gravitational anchorage to the west side of the Changjiang River.The key points of gravitational anchorage design are introduced here.