西北地区海绵城市建设规划中区域道路横断面创新设计

Innovative Design of Regional Road Cross Section in Sponge City Construction Planning in Northwest China

文中以西北地区城市道路规划为背景,融入海绵城市建设理念,设计出市政道路横断面结构,通过对城市道路的慢行道、绿化带、非机动车道、人行道下层空间结构设计的“海绵池”及“海绵体”,实现雨水的快速收集与储存;在非机动车道下部结构增设蓄水池,实现雨水的蓄积、储存及循环利用。海绵池墙体抗渗结构有利于保证路基基础的安全稳定;海绵池透水结构、冲洗装置的设计,有利于维护海绵城市运行机能,提高海绵城市运行设施的使用寿命。文中城市道路横断面的创新设计及应用,可缓解西北干旱城市的热岛效应、干岛效应、雨岛效应。

Based on the urban road planning in northwest China,the cross section structure of urban roads is designed with the concept of sponge city construction.Through the"sponge pool"and"sponge body"designed for the space structure of the urban road slow lane,green belt,non motorized vehicle lane and the lower layer of sidewalk,the rapid collection and storage of rainwater can be realized;The lower struc-ture of the non motorized vehicle lane is added with a reservoir to realize the storage,storage and recycling of rainwater.The impermeable structure of sponge pool wall ensures the safety and stability of subgrade foundation;The design of the sponge pool permeable structure and flushing device is conducive to maintaining the operation function of the sponge city and improving the service life of the operation facilities of the sponge city.Through the innovative design and application of urban road cross section,the project can alleviate the heat island effect,dry island effect and rain island effect that need to be solved urgently in northwest arid cities.