中外规范下缓和曲线长度取值对比分析  

Comparative Analysis on Length Values of Relaxation Curve under Chinese and Foreign Norms

作　　者：陆钰彬 王海珠 LU Yubin;WANG Haizhu

机构地区：[1]四川公路桥梁建设集团有限公司勘察设计分公司,四川成都610041

出　　处：《城市道桥与防洪》2024年第9期18-22,M0005,共6页Urban Roads Bridges & Flood Control

摘　　要：随着越来越多的中国工程建设企业走向海外,加强国内外规范标准的对比分析研究,对项目的顺利实施至关重要。通过分析确定缓和曲线长度的控制因素,对比分析了中、坦、美三国规范在高速公路路线平面设计时缓和曲线长度取值的差异及原因。并结合项目实例,从驾驶者舒适度、超高渐变段设置、线形顺势美观、司机操作时间、车辆侧向位移5个方面计算分析,得出了各平曲线半径对应的缓和曲线长度的建议取值范围,为国内外高速公路路线平面设计提供借鉴与参考。As more and more Chinese engineering construction enterprises go overseas,strengthening the comparative analysis and research of domestic and foreign norms and standards is crucial to the smooth implementation of the projects.By analyzing,the control factors of relaxation curve length are determined.The differences and reasons of the length values of relaxation curve in expressway route plane design of Chinese,Tanzanian and American codes are compared and analyzed.Combined with a project case,the calculation and analysis are carried out from five aspects of driver comfort,ultrahigh transition section setting,linear homogeneity,driver operating time and vehicle lateral displacement.The recommended value range of the length of the relaxation curve corresponding to the radius of each flat curve is obtained,which provides the reference for the plane design of expressway routes at home and abroad.

关 键 词：中国规范 坦桑规范 美国规范 缓和曲线长度 超高渐变 路线设计 

分 类 号：U412.34[交通运输工程—道路与铁道工程]