摘要
雪宝山互通式立交是G69银百高速公路重庆城口至开县段的一座服务型地下互通式立交,位于主线间距只有1 100 m的财神梁隧道和双河口隧道之间,所处位置地形条件恶劣、地质条件复杂,匝道布置不当则安全风险大。因此,如何选取地质风险最小的匝道布置方案,是该互通式立交匝道布置独有的特点。介绍复杂地形、地质条件下该类立交的选型和设计思路,为类似山区高速公路互通式立交设计提供参考。
Xuebaoshan Crossing Interchange is a service oriented underground crossing interchange located on Chengkou to Kaixian section in G69 Yinchuan-Baise Expressway,between Caishengliang Tunnel and Shuanghekou Tunnel,the trunk road distance between which is only 1.1 km.Its location features severe topographic conditions,complicated geological conditions;improper arrangement of the ramp would cause serious safety risks.Therefore,how to select the minimum geological risk ramp arrangement would be the priority concern for this interchange.This paper introduced the selection and design concept for similar interchanges under complicated topography and geology so to provide reference for designing interchanges in similar mountainous expressways.
出处
《公路交通技术》
2017年第4期16-21,共6页
Technology of Highway and Transport
关键词
互通式立交
方案设计
方案比选
安全评价
Crossing interchange
scheme design
scheme selection
safety assessment
