西堠门大桥桥位处风场特性实测分析  

Field measurement and analysis of the natural wind characteristics at site of Xi-hou-men Bridge

作　　者：喻梅[1,2] 倪燕平[3] 廖海黎[2] 李明水[2] 刘明[2] 马存明[2] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]西南交通大学风工程试验研究中心,四川成都610031 [3]中铁第一勘察设计院集团有限公司,陕西西安710043

出　　处：《空气动力学学报》2013年第2期219-224,共6页Acta Aerodynamica Sinica

基　　金：国家自然科学基金计划项目(51278435,50978223)

摘　　要：利用安装在西堠门大桥上的超声风速仪和螺旋桨式风速仪对西堠门大桥桥址区风场特性进行了长期连续现场观测。基于现场实测结果,对季风气候下桥位处的脉动风湍流强度、阵风因子、湍流积分尺度、脉动风速功率谱密度、平均风速剖面以及脉动风速空间相关性等参数进行了分析。这些观测结果可为我国沿海地区风场特性研究提供借鉴和参考,并为其他相似大跨度桥梁设计和施工提供借鉴。Field measurement of wind characteristics at site of long-span bridges is one of the basic re- search areas on bridge wind engineering. The wind characteristics parameters based on field measurement can provide a basis for the verification and modification for wind tunnel testing and simulation technology. A long-term and continuous field measurement was carried out with the ultrasonic anemometers and propeller anemometers installed at site of Xi-hou-men Bridge. Based on the data of field measurement, this paper pres- ents the field measurement results of natural wind characteristics of strong monsoon at site of Xi-hou-men Bridge, including turbulent intensities, gust factors, turbulence integral length scales, power spectral densi- ty, the profiles of mean wind speed and spatial correlation of gusty wind, and so on. These field measure- ment results can provide detailed wind characteristics of coastal areas which can be taken as a reference for the design and construction of other similar long-span bridges.

关 键 词：风场特性 现场实测 风速谱 平均风速剖面 空间相关性 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]