城市道路X形交叉口设计优化及实践  

Design Optimization and Practice of Urban Road X-shaped Intersection

作　　者：吴国华 孙元鹏 WU Guohua;SUN Yuanpeng

机构地区：[1]广州市市政工程设计研究总院有限公司,广东广州510060 [2]广东立宸建筑工程有限公司,广东广州510060

出　　处：《城市道桥与防洪》2024年第12期28-32,M0006,共6页Urban Roads Bridges & Flood Control

摘　　要：针对城市道路中普遍存在的小交角X形交叉口影响行车安全的问题,分析了城市道路X形交叉口平面与竖向对行车安全性与舒适性的影响,提出了局部改线调大交角、考虑驾驶员行车视野并复核修正停车视距长度、延长超高横坡渐变长度以消除“波折”现象及提高交叉口中心标高减缓“反超高”等优化方案,从而保障交叉口行车安全与通行效率。结合广州科技教育城市政配套道路项目实践,验证了优化方案的效果。Aiming at the problem that X-shaped intersection with small crossing angle affects traffic safety commonly in urban roads,the influence of X-shaped intersection plane and vertical on the driving safety and comfort is analyzed.The optimization schemes propose the local changes in alignment to increase the crossing angle,considering the driving visual field of drivers to check and correct the length of the stopping visual distance,extending the gradient length of ultra-high transverse slope to eliminate the phenomenon of"twists and turns"and raising the center elevation of intersection to slow down the"reverse overheight"in order to ensure the traffic safety and traffic efficiency at the intersection.Combined with the practice of the Guangzhou Science and Technology Education City Municipal Supporting Road Project,the effect of the optimization plan is verified.

关 键 词：X形交叉口 交叉口竖向设计 广州科教城 

分 类 号：U412.35[交通运输工程—道路与铁道工程]