城市道路隧道洞口线形一致性设计探讨

Discussion on Design of Alignment Consistency at Urban Road Tunnel Entrance

摘要:

隧道洞口存在的光线明暗变化，给驾驶者安全驾驶带来一定影响，基于此因素，规范对于隧道洞口线形均有严格要求，但对于线形一致性的理解存在一定分歧。结合工程实例，对隧道洞口行驶轨迹、视距进行分析，对洞口线形一致性设计提出了新的思路，力求隧道洞口行驶更加安全。

Abstract:

The light and dark variations at the entrance of tunnel will have a certain impact on the safe driving of drivers. Based on this, the specifications have the strict requirements for the tunnel entrance alignment. But there is a certain difference in the understanding of alignment consistency. Combined with an engineering example, the driving track and visual distance of tunnel entrance are analyzed. The new thinking is proposed for designing the alignment consistency of the entrance in order to make the driving into and out of the tunnel entrance safer.