带限位TMD的抗风动力可靠度研究  

Study on wind-resistant dynamic reliability of TMD with limited spacing

作　　者：谭平[1] 卜国雄[2] 周福霖[1] 

机构地区：[1]广州大学广东省地震工程与应用技术重点实验室,广州510405 [2]哈尔滨工业大学深圳研究生院,深圳518055

出　　处：《振动与冲击》2009年第6期42-45,59,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金资助项目(50608021);国家教育部博士点专项基金资助项目(20061078001)

摘　　要：针对实际高层高耸结构在设置TMD控制装置时,存在空间位置有限、TMD行程受限的问题,进行了带限位TMD的抗风动力可靠度研究。首先,采用虚拟激励法计算复杂高耸结构-TMD体系在脉动风荷载下的随机风振响应;然后,基于随机振动的首次超越破坏准则,研究TMD装置在容许行程范围内不同重现期风荷载下的动力可靠度。并以国内在建的第一高塔——广州新电视塔为工程算例,验证了该研究在实际设计中所具有的重大工程意义。Considering insufficient space for installing TMD in high-rise tower structure, a study on wind-resistant dynamic reliability of TMD with limited spacing was developed. The wind-induced stochastic responses of the high-rise tower structure was calculated by using pseudo excitation method. The wind-resistant dynamic reliability of TMD shock absorber within the acceptable level of TMD stroke was investigated under wind loads with different returning periods, based on first excursion failure criterion of random vibration. The new Guangzhou TV Tower, which is the highest engineering structure in China was taken as a numeric example herein.

关 键 词：高层高耸结构 虚拟激励法 TMD 风振响应 动力可靠度 

分 类 号：TU311[建筑科学—结构工程]