Road greening separation zone design method beneficial to road quality and tree growth

Abstract

The invention discloses a road greening separation zone design method beneficial to road quality and tree growth, and belongs to the technical field of infrastructure construction of roads, municipal administration, gardens, water conservancy and the like. A large-space greening separation zone tree pool body structure outline is formed by the back of road curbstones, the back of a curbstone foundation, a road base layer side wall additionally provided with cell reinforced cells, a cushion layer side wall and a road cushion layer lower soil body side wall. The large-space greening separation zone tree pool body structure outline is formed by the road curbstone back, the curbstone foundation back, the road base layer side wall additionally provided with the cell reinforced cells and the cushion layer side wall. After a bag-shaped soil engineering bag formed by bonding a pond wall waterproof geotextile and a pond bottom permeable geotextile is paved along the outline of the pond, a ceramsite layer, the permeable geotextile, a soil texture soil ball base and planting soil are filled from bottom to top, and a PVC perforated ventilation pipe is arranged. The invention provides a novel design method which simultaneously meets the requirements of road base strength, diffusion load capacity, water stability and freezing resistance, the requirements of cushion strength and water stability, the planting space required by green plant growth and the requirement that planting soil cannot be too dense and hardened, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of infrastructure construction of highways, municipal administration, gardens, water conservancy and the like, and particularly relates to a road greening partition design method which is beneficial to road quality and tree growth. Background technique [0002] Roads, urban roads, park roads, and greenways have limited space. In addition to arranging motor vehicle lanes, non-motor vehicle lanes, and sidewalks and other essential traffic land within their scope, road greening should also be arranged. The growth of greening trees requires certain above-ground and underground living spaces. If they are not satisfied, the trees will not grow and develop normally, which will directly affect their shape and age, and affect the role of road greening. In order to meet the design specifications of roads, roads and parks, road engineers should take protective measures such as drainage in combination with local climate...

AI Technical Summary

Problems solved by technology

Current background technology The conventional design method for the width of the road surface, base layer and cushion is to widen from top to bottom. This approach meets the requirements of the ability to spread loads required by road codes, but causes the road base or cushion to occupy the road. For the horizontal space of the middle divider or the divider on both sides, if the divider itself is not wide and there are many layers of road structure, some even have the situation that the bottom road cushion is connected in the divider; if the divider itself is relatively In the case of a wider one, the planting space of the green separation belt forms a shape that is wide at the top and narrow at the bottom. On this basis, road engineers have two methods to prevent road damage caused by rainwater soaking the roadbed and road surface, base layer and cushion: One is to add impermeable geotextiles in the separation zone, resulting in a small space for planting in the separation zone, and the separation of soil and groundwater, which is not conducive to plant growth; another method is to build a culvert at the bottom of the separation zone and design a drainage channel after collecting rainwater Drain the water out of the roadbed or urban rainwater pipes, but there is still a problem that the planting space in the separation zone is small, and the rainwater cannot be used reasonably, which is not conducive to the growth of plants.

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