奉科金沙江大桥桥位比选  

Comparison and selection on bridge position of Jinsha river bridge in Fengke

作　　者：王有昌[1] 余涛 WANG Youchang YU Tao(Kunming Survey ＆ Design Institute of State Forestry Administration, Kunming 650216, China Yunnan Kunlu Consulting Company of Road and Bridge Engineering)

机构地区：[1]国家林业局昆明勘察设计院,云南昆明650216 [2]云南堃路道路桥梁工程咨询有限公司,云南昆明650200

出　　处：《林业建设》2016年第6期38-43,共6页Forestry Construction

摘　　要：奉科金沙江大桥是丽江至泸沽湖旅游环线的控制性工程,也是阿海水电站水库淹没复建工程。项目区金沙江河段处于地质灾害群发区,岸坡稳定性差,不良地质作用强烈,工程地质条件复杂,水库蓄水后可能引发古滑坡复活或大规模塌岸,跨江桥位选择极其关键。结合桥位比选原则和限制条件,对项目区金沙江河段进行重点研究,通过跨江桥位多方案比选,确定推荐桥位。实践证明该推荐桥位是安全可靠的,可为类似工程地质条件区桥位选择提供参考。Fengke Jinsha river bridge is the key project of Lijiang to Lugu Lake tourism loop. It is also a reservoir inundation and restoration project of the Ahai Hydropower Station. The project area of Jinsha river is in the geological disasters area, which the bank slope stability is poor, the bad geological effect is strong, the engineering geology condition is complex, and reservoir may lead to the ancient landslide or collapse with large-scale. It＇s a key to choose site across the river. Combined with the selection principle and the limiting condition with the bridge, studied the project area of Jingsha river, through multi-scheme comparison, this paper determined the recommended bridge position. Practice has proved that the recommended bridge position is safe and reliable, and it can provide reference for bridge location selection in similar engineering geological conditions.

关 键 词：不良地质 滑坡 水库坍岸 桥位比选 

分 类 号：U442.54[建筑科学—桥梁与隧道工程]