基于视觉适应曲线的公路隧道群遮阳棚设计

Design of the Shading Shed for Highway Tunnel Groups Based on the Visual Adaptation Curve

针对公路隧道群出入口地段的明暗突变现象,在洞口处设置减光设施可减少明暗效应对驾驶人员的影响。文章基于防灾救援和驾驶视觉角度给出了公路隧道群的定义;考虑公路隧道群的运营特点选择遮阳棚作为减光设施,并根据隧道间的间距给出了连接式和非连接式遮阳棚两种设计模式;参照视觉适应曲线对隧道群连接地段的遮阳棚进行了透光率和长度设计。研究成果可为类似公路隧道群遮阳棚设计提供参考。

As for the sudden change of light and shade at the entrance and exit of highway tunnel group,the influence of light and shade effect on drivers can be reduced by setting a dimming device at the entrance and exit of highway tunnel group.In this paper the definition of highway tunnel group is given from the perspective of disaster prevention and rescue,and driving vision;considering the operation characteristics of the highway tunnel group,the shading shed is selected as the light reducing facility,and two design modes,e.g.the connected and unconnected shading sheds are given according to the spacing between the tunnels;the light transmittance and length of shading shed at connection section of the tunnel group are designed with reference to the visual adaptation curve.The research results can provide reference for the awning design of similar highway tunnel groups.