窄路密网下的道路断面设计

Cross-Section Design of Roads for Narrow and Dense Road Networks

摘要:

当城市道路以提升机动车出行效率为基本设计理念时，城市道路将不断拓宽，从而使得城市的通行空间被大量机动车占据，慢行及公共空间被机动车侵蚀，进而导致城市通行环境变差，交通出现拥堵等。在城市可持续发展的背景下，目前我国城市道路的设计理念正在由“大街区，宽马路”向“小街区、密路网”转变。为验证该设计理念的适用性，以河北雄安新区容东片区的路网布局为依托，详细分析了“窄路密网”下的城市道路断面设计特点和后期运行效果，可为以后的城市道路设计提供参考。

Abstract:

When the basic design concept of urban roads is to enhance the efficiency of motor vehicle travel, the urban roads will be continuously widened, which will result in a large number of motor vehicles occupying the traffic space of city. Slow traffic and public spaces will be eroded by motor vehicles, leading to a deterioration of the urban traffic environment and traffic congestion. In the context of sustainable urban development, the design concept of urban roads is now shifting from "large blocks, wide roads" to "small blocks, dense road networks" in China. To validate the applicability of this design concept, the cross-section design characteristics and the post-construction operational effects of urban roads under the "narrow and dense road network" model are analyzed in detail by relying on the layout of road network of Rongdong Area in Xiongan New District, Hebei Province, which can provide a reference for the design of urban roads in the future.