广州西塔风效应的风洞试验与现场实测研究  

Wind Effects on Guangzhou West Tower:Wind Tunnel Test and Field Measurement

作　　者：徐安[1] 吴玖荣[1] 傅继阳[1] 

机构地区：[1]广州大学,广州大学-淡江大学工程结构灾害与控制联合研究中心,广州510006

出　　处：《武汉理工大学学报》2010年第9期161-165,169,共6页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50778082);广东省国际合作项目(2009B050200015);广州市科技计划项目(08B72070029)

摘　　要：以广州第一高楼珠江新城西塔为案例,进行了刚性模型多点同步测压风洞试验获取风荷载分布,结合有限元模型进行结构的风振响应分析;另一方面,现场实测了2009年9月15日台风巨爵过程中风场及结构顶部风致加速度响应变化历程。对两种方法所获得的风振响应结果进行了对比分析。结果表明,两种方法得到的西塔顶部加速度响应均小于国家有关技术规程所规定的限值,即将建设的东塔对西塔存在明显的风干扰效应,在部分风向角下有干扰工况比无干扰工况的结果大100%;风洞试验结果和现场实测结果的对比表明,二者在x方向的结果基本接近,在y方向的结果相差约28%,由于实测数据选择的是同等风速条件下的响应最大值,因此可以认为按照风洞试验结果估算结构加速度响应是安全的,从而验证了风洞试验和理论分析结果的可靠性。Both wind tunnel test and field measurement were conducted for the Guangzhou West Tower（GWT） to research wind effects on the tallest building in Southern China.Wind induce vibration was analyzed based on its finite element model and the wind tunnel test.On the other hand,wind characteristics and wind-induced acceleration of GWT were measured during Typhoon Koppu passed Guangzhou on Sep.15,2009.Comparison of results obtained from the above two methods were conducted.The results show that： the peak acceleration at the top of GWT is less than national technical specification;the interference effect from the East Tower is obvious for the wind-induced response of GWT.Wind-induced acceleration response in x direction obtained from the wind tunnel test is close to those from the field measurement,but the difference is 28% for those wind-induced responses in y direction.As the maximum value from each direction were taken into consideration from both field measurement and wind tunnel test,it＇s obviously safe to adopt the wind tunnel test results for the structural design.Research has confirmed the reliability of the wind tunnel test and theoretical analysis.

关 键 词：高层建筑 风致响应 风洞试验 现场实测 

分 类 号：TU973.32[建筑科学—结构工程] TU317.2