为促进隧道遮光棚的发展,全面阐述中国城市隧道遮光棚的研究进展和建设现状。首先,通过文献调研梳理国内外隧道遮光棚的研究成果;其次,借助百度实景地图,调研中国291座城市隧道遮光棚的建设现状;然后,以理论研究和建设实践对比的方式,总结城市隧道遮光棚的应用范围、设置长度、减光构造、棚体色彩、洞顶形态等特点。实践与理论的偏差主要体现为: 1)遮光棚的应用比例低(43.4%)、长度较短(43.8 m); 2)遮光棚的不适眩光问题显著(57.3%),背景色彩普遍未采用暗色调(86.1%); 3)针对遮光棚诱导色彩和诱导形态的研究相对滞后。最后,针对存在的问题,提出相应的展望。
To promote the
development of shading sheds for tunnels, a comprehensive description of
research advances and the construction status of shading sheds in China is
presented. First, a review of studies on shading sheds of urban tunnels
worldwide is presented. Second, the construction status of 291 tunnel shading
sheds in China is investigated based on Baidu real scene map. Theoretical
designs are compared with actual construction characteristics of shading sheds
for urban tunnels, in terms of the application scope, length setting, dimmer
structure, background color, and shed top shape. Compared to actual
construction, the theoretical designs (1) have 43.4% low application proportion
and are shorter (43.8 m); (2) have 57.3% high uncomfortable glare and 13.9% low
dark tonal color; and (3) have hysteresis in the induced color and shape.
Finally, the application prospects for shading sheds are discussed.