摘要
温州东海广场是高200m的超高层建筑,风荷载是其结构设计的控制荷载之一。进行了刚性模型同步测压风洞试验,以此为基础,根据随机振动原理,考虑了风力相关性及振型耦合,对温州东海广场超高层建筑进行了风振响应分析,计算得到36个风向角下的风致响应和等效静力风荷载。计算结果表明,温州东海广场工程主塔楼Y轴方向的风荷载大于X轴方向风荷载,80°风向角为不利风向;角点和质心位置的合加速度响应均小于0.15m/s2,满足《高层建筑混凝土结构技术规程》(JGJ 3—2002)顶点最大加速度限值的要求。
Wenzhou Donghai Plaza is 200m high,and wind load is one of the key loads that dominate structure design.Wind tunnel test for the rigid model of Wenzhou Donghai Plaza was conducted to obtain the wind pressure.Based on experimental data,wind-induced responses and ESWL(Equivalent Static Wind Load) were calculated in 36 attack angles by stochastic vibration method,which takes into account the wind force coherence and modal coupling.The calculated results indicate that wind load in Y-axis is much larger than in X-axis and 80 degree is the most unfavorable attack angle.The largest acceleration at mass center and plan corners are all below the limitation of 0.15m/s2 and required by technical specifications of tall building in China.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2009年第S1期149-153,共5页
Journal of Building Structures
基金
国家自然科学基金重大研究计划培育项目资助(90815015)
关键词
超高层建筑
风洞试验
风振响应
等效静力风荷载
super-tall building
wind tunnel test
wind induced response
equivalent static wind load
