南京大胜关长江大桥风特性长期实测分析  

Long-term Measurement and Analysis of Wind Characteristics of Nanjing Dashengguan Yangtze River Bridge

作　　者：倪大治 苏迅 茅建校[2] NI Dazhi;SU Xun;MAO Jianxiao(Nanjing Yangtze River Third Bridge Co.,Ltd.,Nanjing 211806,China;Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,Southeast University,Nanjing 211189,China)

机构地区：[1]南京长江第三大桥有限责任公司,南京211806 [2]东南大学混凝土及预应力混凝土结构教育部重点实验室,南京211189

出　　处：《现代交通技术》2025年第1期18-23,共6页Modern Transportation Technology

基　　金：国家自然科学基金(52108274)。

摘　　要：基于南京大胜关长江大桥的结构健康监测系统,采用南塔塔顶及跨中上游的风速仪数据,开展桥址区日常风特性分析。基于矢量分解法,分析了桥址区风特性的总体特征与季节性分布规律,并研究紊流强度、阵风因子、紊流积分尺度、紊流功率谱密度等脉动风特性的统计规律。在此基础上,对比南塔塔顶及跨中上游的风特性,探讨了各类风特性参数的相关性。Based on the structural health monitoring system of Nanjing Dashengguan Yangtze River Bridge,daily wind charac-teristics analysis of the bridge site area was carried out with anemometer data from the top of the south tower and the up-stream side of the span.The overall characteristics and seasonal distribution pattern of the average wind characteristics in the bridge site area were analyzed based on the vector decomposition method.The statistical laws of fluctuating wind characteris-tics including turbulence intensity,gust factor,turbulence integration scale and turbulence power spectral density were stud-ied.In addition,the wind characteristics at the top of the south tower and the upstream of the span were compared,and the correlation between various wind characteristics parameters was discussed.

关 键 词：风特性 结构健康监测 矢量分解法 紊流积分尺度 

分 类 号：U442.59[建筑科学—桥梁与隧道工程]