基于热舒适度模拟的自行车专用路优化策略

Optimization Strategy of Bicycle Lane Based on Microclimate Simulation

自行车回归城市可以有效缓解交通拥堵、城市热岛等大城市病。改善骑行环境,优化骑行者的热舒适度,提升公众的骑行意愿,有利于提高自行车交通出行率。以北京市新建自行车专用路龙泽地铁站路段为例,利用ENVI-met软件进行模拟研究,通用热气候指数对该路段进行现状评价,分析得到影响该段自行车专用路的热舒适度的空间要素为建筑退让距离、建筑间距和绿地布局,根据研究范围内的建筑空间形式,设置对照组,分析这3个要素最优的空间形式并提出优化策略,将改进方案模拟结果与现状做对比,证明策略可行有效。研究结果为北京自行车专用路热环境的改善提供设计依据。

Bicycles returning to the city can effectively alleviate the traffic congestion,urban heat island and other diseases in big cities,improve the riding environment,optimize the thermal comfort of cyclists,enhance the riding willingness of the public,and help improve the bicycle traffic trip rate.The software ENVI-met is used for simulation research,taking Long Ze subway station section of newly-built bicycle lane in Beijing as an example,and UTCI thermal comfort index is used to evaluate the current situation of this section.It is found that the spatial factors that affect the thermal comfort of bicycle lane are building concession distance,building spacing and green space layout.According to the architectural space form within the research scope,control groups are set up,the optimal spatial form of these three elements is analyzed,and the optimization strategy is put forward.The simulation results of the improvement scheme are compared with the current situation,which proves that the strategy is feasible and effective.The research results provide design basis for improving the thermal environment of the bicycle lane in Beijing.