摘要
对于体型复杂的超高层建筑,通常利用风洞进行刚性模型试验,从而得到可直接用于设计的风荷载体型系数;然而高耸结构由于其基频较低,风与结构的耦合作用往往会导致结构振动的明显加大,对于主体结构及其维护构件的安全使用产生不利的影响。在采用简化层模型假设的基础上,通过风洞试验的数据,编制了计算高层复杂建筑结构风振相应的程序。通过对一实际工程的计算分析表明,计算结果合理可靠,并已运用于设计中。
Modern buildings usually have a complex structure,and wind tunnel test is used to determine the body values of high buildings.The basic frequency of high buildings is so low that it often induces large wind vibration of structure.The large wind vibration will result in damage to major structure and exterior-protected structure.The design code used now can only gain the wind-vibration values of regular structures but can not used for complex structures.It is simplified the complex structure model and used the result of wind tunnel experiments to calculate the wind-vibration values.The calculation results indicate this method is appropriate and correct.Finally this method is used in an actual project in Ningbo.
出处
《工业建筑》
CSCD
北大核心
2009年第S1期382-385,390,共5页
Industrial Construction
关键词
复杂高层建筑
风振
简化模型
时程分析
风洞试验
complex structure
wind-vibration
simplified model
Lime-history analysis
wind tunnel test
