北京商务中心风环境风洞实验研究  

A Wind Tunnel Experiments Study of Wind Environment of Beijing Central Business District

作　　者：王宝民[1] 刘辉志[2] 桑建国[1] 吴国昌[3] 张伯寅[3] 梁彬[3] 庞彬[3] 朱凤荣[3] 钮珍南[3] 

机构地区：[1]北京大学物理学院大气科学系,北京100871 [2]中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室,北京100029 [3]北京大学湍流和复杂系统国家重点实验室,北京100871

出　　处：《气候与环境研究》2004年第4期631-640,共10页Climatic and Environmental Research

摘　　要：北京商务中心区 (CentralBusinessDistrict,CBD)规划于故宫东部约 5km地带 ,涵盖面积约 4km2 ,最高建筑物超过 30 0m。采用风洞刷蚀技术结合朝阳气象站常规资料对CBD行人风环境进行研究 ,结果表明 :( 1 )在冬春季西北大风时 ,CBD高大建筑物附近出现局地 8级以上大风的概率为 0 1 1 4% ,相当于每年发生 5 0次 ,超过了每年小于 1 0次的可接收评估准则 ,将会影响行人舒适度和安全 ;偏南风符合行人舒适度评估准则 ,不会造成明显风环境问题。 ( 2 )夏季白天偏南风盛行 ,在CBD东西两侧建筑物密集区域出现小风(风速低于 1 5ms- 1 )的概率高达 2 2 % 。A Central Business District (CBD) will be built in Beijing, 5 kilometers east of the Imperial Palace, the center of Beijing City. The district covers 4 km2 with the highest buildings over 300 m.The erosion technique in boundary layer wind tunnel and meteorological data of Chaoyang Weather Station are used to study the wind environment of CBD. The results show that (1) when it blows strongly northwesterly wind in the winter and the spring, Beaufort number 8 wind will occur 5.0 times in the areas around the tall buildings in CBD, which influences the safety of pedestrians. The near southerly wind will not cause pedestrians discomfort. (2) in summer days, since the near southerly wind dominates, the high frequency 22% of wind speed lower than 1.5 m s -1 will result in the high level pollution in the east and west parts of CBD.

关 键 词：风环境 风洞实验 刷蚀技术 

分 类 号：P425.5[天文地球—大气科学及气象学]