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重庆再增“网红”路:2.5层螺旋立交 高差44米(图)

2017-09-12 08:01:22   中国经济网

红云路螺旋立交效果图。

重庆最复杂的黄桷湾立交、渝中区化龙桥的重庆首座螺旋隧道、巴南区界石的“波浪形”公路……

在充满了3D效果的山城,越来越多的交通建设项目,一不小心就成了“网红”。化龙桥片区继“网红”螺旋隧道之后,又将新增一座“网红”螺旋立交。

近日,记者从市国资委公开信箱获悉,渝中区正在开展高九路周边小区至嘉滨路之间连接道——红云路的设计研究。红云路建成后,将方便阿卡迪亚、云栖谷等小区居民的出行。

从重庆市设计院网站公布的红云路设计方案来看,红云路将是一条极具山城特色的道路。道路除了有一座同轴螺旋立交,还有一段“陡坡+缓坡+陡坡+缓坡”设计的下坡道路。

2.5层螺旋立交,高差达到约44米

红云路的环评报告显示,红云路项目位于渝中区红岩村,道路起点位于阿卡迪亚与云栖谷小区之间的断头路,终点接嘉滨路,道路全长约1745米。道路规划红线宽为16米,双向两车道,设计时速为20公里/小时,是一条城市支路。

红云路的道路长度虽然不长,但是道路所在区域内地形复杂,受限制因素较多,这也给道路设计带来了一定难度。

比如,红云路起点至终点的直线距离仅有900米,但是高差却达到了约119.6米;直线平均纵坡(平均纵坡是指一定长度的路段纵向所克服的高差与该路段的长度比)达到13.2%。

如何解决道路不长,高差较大的问题?

从设计方案来看,在道路起点附近有一处高差达40余米的陡坎。为了让陡坎上下平稳衔接,这里设计了一座同轴螺旋立交。

据了解,红云路的这座螺旋立交位于快速路三纵线红岩村隧道进口洞门右侧,全长约610米,为2.5层同心圆螺旋结构。上下层桥梁平面位置重叠。这座螺旋立交直接消化的高差达44米。

红云路部分路段效果图。

“陡坡+缓坡”设计,保障行车安全

为了进一步处理好道路高差较大的问题,除了螺旋立交外,红云路还采用了陡缓坡结合的设计。

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