张拉整体塔结构动力特性研究  

Research on dynamic performance of tensigrity tower

作　　者：陈志华[1] 刘红波[1] 王小盾[1] 张立平[1] 赵建波[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《空间结构》2012年第2期55-63,共9页Spatial Structures

基　　金：国家自然科学基金资助项目(50778122);教育部新世纪优秀人才支持计划资助(NCET-06-0228)

摘　　要：以在天津塘沽拟建的30m高张拉整体塔为背景,提出了分层组装、顶层一次张拉的制作思想,并利用这个思想制作了1∶5的缩尺模型.采用脉冲锤击法测试了模型的固有频率、阻尼比、模态质量、模态阻尼、模态刚度和模态振型等基本动力特性参数,得出张拉整体塔结构的基本动力特性.与理论分析结果比较,两者吻合良好,为今后张拉整体塔的风振效应和地震反应等动力分析提供重要的基础数据.A tensigrity tower with a height of 30m will he constructed in Tanggu District of Tianjin city. Based on the tower, a model with a scale of 1- 5 was fabricated by a new assembling method called stratified assembling and one-step pretension in top end method. Some key dynamic parameters were obtained from dynamic experiment, such as natural frequency, damping ratio, modal mass, modal stiffness, and modal shape and so on. Then FE model of this structure was developed in ANSYS, and its natural frequency and modal shape were also obtained. The FE analysis results is well consistent with that of experiment. All conclusions obtained in this paper can be an important reference for further wind- induced effect and seismic response research.

关 键 词：张拉整体塔 分层组装 顶层一次张拉 动力试验 

分 类 号：TU394[建筑科学—结构工程]