俞布,贺晓冬,危良华,陈亮,周雯.杭州城市多级通风廊道体系构建初探.气象科学,2018,(5):625-636 YU Bu,HE Xiaodong,WEI Lianghua,CHEN Liang,ZHOU Wen.The primary exploration for construction of urban multilevel ventilation corridors system in Hangzhou.Journal of the Meteorological Sciences,2018,(5):625-636
杭州城市多级通风廊道体系构建初探
The primary exploration for construction of urban multilevel ventilation corridors system in Hangzhou
投稿时间:2018-06-13  修订日期:2018-07-08
DOI:10.3969/2018jms.0069
中文关键词:  城市通风廊道  多尺度数值模拟  分区风玫瑰  风功能区  风流通潜力
英文关键词:Urban ventilation corridors  Multiscale numerical simulation  Partitioned wind rose plot  Wind functional areas  Ventilated potential
基金项目:杭州城市气候规划基础研究项目资助
作者单位E-mail
俞布 南京信息工程大学, 南京 210044
杭州市气象局, 杭州 310051 
 
贺晓冬 中国气象局北京城市气象研究所, 北京 100089 xdhe@ium.cn 
危良华 浙江工业大学建筑规划设计研究院, 杭州 310014  
陈亮 华东师范大学地理科学学院, 上海 200241  
周雯 杭州市规划局城市规划编制中心, 杭州 310026  
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中文摘要:
      随着小城镇建设及城市总体规划修编的实施,基于城市通风廊道构建的生态环境效应成为当前城市生态规划研究的热点。以杭州为例,研究构建了集合城市气候观测、多尺度数值模拟、城市形态控制为一体的城市多级通风廊道系统,综合考虑能够表达或影响城市通风环境的多源评价指标,如分区风玫瑰、近地面风流场、城市风功能区及风流通潜力等。结论表明:杭州城市主导风空间差异明显,可划分为15个截然不同的风玫瑰分区。利用区域边界层模式(RBLM)耦合多层城市冠层模型提取多种地面风流场信息,并结合主导风观测综合划定杭州城市一级通风廊道。结合建筑覆盖率、迎风面系数和地表粗糙度综合评价城市风流通潜力,并将其作为杭州城市二、三级风道划定的辅助依据。同时,利用RNGκ-ε湍流模型验证风道对局部通风环境改善的有效性。最终,基于多源信息的空间叠置分析,综合构建了由6条一级风道、11条二级风道和12条三级城市绿廊构成的杭州城市多级通风廊道体系,为其他城市开展通风廊道研究提供了通用的技术方法,从而科学有效的服务于城市生态规划及管理。
英文摘要:
      Along with the construction of small towns and the new round master plan being implemented, the construction of urban ventilation corridors and its eco-environment effect have gradually become a research hotspot. Taking Hangzhou as an example, the paper constructs a multilevel ventilation corridors system using a combination of urban climatic observation, multiscale numerical simulation and the controlling to urban form. The multisource evaluation indexes which could reflect and influence ventilated environment are established by synthetically considering, such as partitioned wind rose plot, the surface wind field, the wind functional areas and urban ventilated potential. The results indicate that, the spatial differences of urban dominant winds are significant and divided into 15 regions. The characteristic of surface wind fields is extracted via region boundary layer model coupling multi-layer urban canopy model, and it can be used to designate the primary urban ventilation corridors in Hangzhou. Meanwhile, the urban ventilated potential is evaluated for assisting in designating the secondary and three-level urban ventilation corridors, based on building coverage rate, upwind coefficient and surface roughness indexes. The effectiveness for improving the ventilation is proved by application of actual examples using the RNGκ-ε turbulent model. After all, the urban multilevel ventilation corridors system of Hangzhou consists of 6 primary ventilation corridors, 11 secondary ventilation corridors and 12 urban green corridors. It may provide guidance for similar research on other urban, thus serving urban ecological planning and management better.
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