厦沙高速公路长大纵坡线形连续性的分析与评价  

Analysis of the Alignment Consistency of Longitudinal Slope on Xiamen-Shaxian Express Way

作　　者：张燕清 

机构地区：[1]三明市高速公路建设总指挥部,福建三明365000

出　　处：《铁道建筑技术》2013年第6期50-53,共4页Railway Construction Technology

摘　　要：公路线形连续是保证汽车安全行驶的基本要求,特别是受地形、地质、水文等自然条件限制,山区高速公路往往存在坡度大、坡道长的连续长大下坡路段,连续长大纵坡道路线形是造成山区高速公路重特大交通事故的重要原因。结合厦沙高速公路,提出了长大下坡路段线形连续性的分析与评价方法,最后提出了长大纵坡路段安全保障措施的合理化建议。Highway alignment consistency is to ensure the basic requirements of the safe driving of the car. Especially due to the restricted terrain, geology, hydrology and other natural conditions, there are often steep slopes and ramp-long section of a long slope for highway in mountain areas, and the continuous longitudinal slope of the grade road alignment is an im- portant cause of mountainous highway accidents. This paper, based on the highway compares the downhill analysis and e- valuation of the continuity of road alignment, and finally proposes the rational measures to ensure security.

关 键 词：长大纵坡 高速公路 分析与评价 线形连续 设计车速 运行速度 

分 类 号：U448.21[建筑科学—桥梁与隧道工程]