广州新电视塔模型测力风洞试验及风致响应研究Ⅰ:风洞试验  

Wind tunnel force balance test and wind-induced responses of the Guangzhou New TV Tower structure Ⅰ:wind tunnel test

作　　者：顾明[1] 黄鹏[1] 周晅毅[1] 朱乐东[1] 潘汉明 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092 [2]广州新电视塔建设有限公司,广东广州510000

出　　处：《土木工程学报》2009年第7期8-13,共6页China Civil Engineering Journal

基　　金：广州新电视塔建设科研项目;国家自然科学基金创新群体科学基金(50621062);重大研究计划重点项目(90715040)

摘　　要：广州新电视塔是目前世界第一高电视塔,总高度约为610m。风荷载及其效应将控制结构设计,但由于塔结构形状独特,无法在风洞中通过测压试验来获得结构上的风力;又由于结构过于细长,并且高阶振型对结构风致效应的贡献不可忽略,因此对全塔(包括天线)结构模型采用高频动态测力天平技术进行风洞试验也是不可行的。为此,采用新的试验方法——节段模型测力方法来获得作用在塔上的风力分布。介绍试验模型、风洞试验方法、试验数据处理方法以及主要试验结果。试验结果用于结构设计,同时用于计算全塔的风致响应。The Guangzhou New TV Tower with a height of about 610 meters is presently the tallest TV tower in the world. Wind load and wind effects on the tower are the key factors for the structural design. Due to its special structural form, it is very difficult to measure the wind pressures on the entire tower. Moreover, because high modal responses of the tower could occur under wind excitation, the high-frequency balance technique also can not be used for this technique can measure only the first mode generalized wind forces. A new experimental technique is proposed for the wind tunnel test. The entire tower was divided into 19 sections and individually tested in TJ-2 Wind Tunnel. This paper presents the sentional models of the tower, the experimental method and the testing results. The test results will be adopted for the structural design and for computation of wind induced responses of the tower. The present wind tunnel test method could also be used as a reference for wind-resistant design of similar complex super-tall structures.

关 键 词：广州新电视塔 风洞试验 节段模型 高频动态测力天平 风力分布 

分 类 号：TU279.744[建筑科学—建筑设计及理论] TU317.1