Highway tunnel entrance and exit shading facility

Abstract

The invention relates to a highway tunnel entrance and exit shading facility. The facility is suitable for an east-west tunnel entrance and exit with the speed limit ranging from 60 km / h to 80 km / h. The highway tunnel entrance and exit shading facility is composed of a supporting facility at the bottom, a connecting facility on the upper layer, a shading facility body at the top and a sight line induction system. The supporting facility comprises an arc-shaped reinforced concrete stand column; the connecting facility comprises a transverse annular arch frame, a longitudinal connecting steel pipe and an oblique connecting steel pipe; the shading facility body comprises light-transmitting plates with different light transmittances and an oblique shading plate arranged below the light-transmitting plates; the sight line induction system comprises an annular light reflection component and a flexible warning column; the annular light reflection component is a low-frequency annular light reflection component; the flexible warning column is a high-frequency flexible warning column; the reinforced concrete stand column is a medium-frequency reinforced concrete stand column; the transverseannular arch frame is a medium-frequency transverse annular arch frame; and the oblique shading plate is a high-frequency oblique shading plate. Coordination and unification of tunnel lighting energyconservation and driving safety can be achieved.

Description

technical field [0001] The invention relates to the technical field of road traffic safety facilities, in particular to a shading facility for entrances and exits of highway tunnels. Background technique [0002] During the day, the illuminance at the entrance and exit of the highway tunnel changes drastically, which often causes the driver's visual adaptation difficulties, especially when the driving direction of the tunnel is east-west, the driver's eyes will be facing the direction of sunrise or sunset, and the small angle of sunlight will shine into the driver's eyes. It will make the black hole effect and white hole effect at the entrance and exit of the tunnel worse, thereby increasing the accident risk at the entrance and exit of the tunnel. In order to weaken the black hole effect and white hole effect at the entrance and exit of the tunnel, and ease the change of illumination inside and outside the tunnel, at present, it is mainly through enhancing the illumination ...

AI Technical Summary

Problems solved by technology

[0003] The commonly used highway tunnel shades in China mainly include steel structure and reinforced concrete hollow type. Among them, the steel structure type has a short service life, poor wind resistance and anti-collision ability, and the reinforced concrete hollow type has weak light adjustment ability and often has obvious frequency Flashing effect, poor landscape effect, high cost, mostly used in urban tunnels

At present, there are problems such as serious stroboscopic flicker, poor illumination transition effect, few visual reference objects, and high construction cost in tunnel shading sheds. Therefore, there is an urgent need for a low-cost, safe and effective shading facility for road tunnel entrances and exits.

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