考虑行车安全的隧道洞口设计研究
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摘要
在我国山区公路工程建设中,常常需要采用隧道方案穿越山岭,以减少对环境的破坏,缩短里程,提高行车安全等。但是,由于隧道使用环境与常规路线有很大的区别,在运营过程中发现,隧道洞口内外交通事故率相对其他路段较高,较大影响道路的正常运营,因此隧道洞口段设计和安全保障措施亟需解决。通过对线形分析,提出基于行车安全的平曲线最小半径以及洞口段理想最大坡度,通过对洞口内外环境分析,提出应从景观设计和光线设计确保视觉平滑过渡。
In the construction of highway projects in mountainous areas of China, tunnel schemes are often used to cross mountains to reduce environmental damage, shorten mileage and improve road safety. However, due to the great difference between the tunnel use environment and the conventional route, it is found in the operation process that the traffic accident rate inside and outside the tunnel entrance is higher than other sections, which greatly affects the normal operation of the road. Therefore, the design and safety guarantee measures of the tunnel entrance section need to be solved urgently. By analyzing the line shape, the minimum radius of the flat curve and the ideal maximum gradient of the entrance section are put forward based on the safety of driving.
In the construction of highway projects in mountainous areas of China, tunnel schemes are often used to cross mountains to reduce environmental damage, shorten mileage and improve road safety. However, due to the great difference between the tunnel use environment and the conventional route, it is found in the operation process that the traffic accident rate inside and outside the tunnel entrance is higher than other sections, which greatly affects the normal operation of the road. Therefore, the design and safety guarantee measures of the tunnel entrance section need to be solved urgently. By analyzing the line shape, the minimum radius of the flat curve and the ideal maximum gradient of the entrance section are put forward based on the safety of driving.
引文
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[3]张明浩.高速公路视觉景观对行车安全的影响研究[D].重庆:重庆交通大学,2016.
[4]王东方,叶飞,张金龙,等.山岭公路隧道洞口景观问题分析探讨[J].地下空间与工程学报,2012,8(4):874-883.
[5]郭创川.遮阳棚在公路隧道洞口减光中的应用[J].广东公路交通,2016(4):114-117.
[6]李英涛,程国柱.公路隧道出入口减光格栅段合理长度研究[J].公路工程,2009,34(5):13-15.