群体高层建筑行人区域风环境试验研究  

TEST ON PEDESTRIAN AREA WIND ENVIRONMENT AROUND HIGH RISE BUILDINGS

作　　者：马文勇[1] 刘庆宽[1] 刘小兵[1] 尉耀元[1] 

机构地区：[1]石家庄铁道大学风工程研究中心,河北石家庄050043

出　　处：《工程力学》2013年第B06期304-308,共5页Engineering Mechanics

基　　金：国家自然科学基金项目(51108280)

摘　　要：结合风洞试验测试对Irwin探头的制作、标定以及使用进行分析,并采用自制的Irwin探头和简便风向测试设备对某群体建筑行人区域风环境进行了研究,结果表明:经标定使用有机玻璃制作的Irwin探头具有很好的线性度,可以得到相对准确的行人高度风速,考虑到压力测试设备的精度,应当在尽量高的风速下测试;采用拍照方式记录的风向标基本上可以得到行人高度处的风向信息;由于狭管效应与角区气流加速效应,实例群体建筑夹缝与角区的风速比较大,风环境问题突出,需要采用风环境改善措施降低该区域风速;另外通过对200名志愿者的测试对行人舒适度的阀值进行了讨论。The making, calibrating and using of Irwin probe are analyzed though a wind tunnel test, and the study on pedestrian area wind environment around high rise buildings is carried out by applying self-made Irwin probes and simple wind direction sensors. The results show that the Irwin probe with good calibration linearity, which made by organic glass, can be used at pedestrian level wind velocity. The high wind speed should be selected in the wind tunnel test considering the accuracy of pressure sensor precision. The pedestrian level wind directions are obtained by photographing the simple wind direction sensors. The wind environment problems are obvious in narrow streets among buildings and comers where the wind velocity ratio are relative larger because of narrow road effects and comer streams, the remedial action had to be taken to reduce the wind speed. At the same time, the discomfort critical wind speed on pedestrian is discussed, which is obtained from testing on 200 volunteers in a wind tunnel.

关 键 词：群体高层建筑 行人区域风环境 Irwin探头 风洞试验 舒适度准则 

分 类 号：P425.5[天文地球—大气科学及气象学]