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五、路线横断面对绿化设计的影响联邦德国规定,高速公路路旁栽植,要求距离铺装道路边缘4.5m;美国则规定必须距路边7.5m,才能栽植树木.过于接近车道,有与车辆发生冲突的危险,如风吹倒树木或折断树枝,就会阻断交通.栽植树木的树冠应在建筑限界以外,但目前公路征地的地界距路面的边缘仅有1 m,按照上述要求,这些路段都不能栽种乔木作为行道树.故我们按不同断面构造,分别进行设计.
Fifth, the impact of cross-section route on the greening design Federal Germany regulations, highway roadside planting, requiring distance from the paved road edge 4.5m; the United States is required to be 7.5m away from the roadside in order to plant trees too close to the lane, with the vehicle The danger of conflict, such as the wind blowing down trees or broken branches, will block the traffic. Canopy planting trees should be outside the building boundaries, but now the boundaries of road land acquisition from the edge of the road surface only 1 m, in accordance with the above requirements, these The sections can not be planted with trees as street trees, so we design according to the different sections, respectively.