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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.
Based on the proposed 30m high-tensioned monolith in Tanggu, Tianjin, a production idea of stratified assembly and top tensioning was put forward and a 1: 5 scale model was made by using this idea.The pulse hammer test The basic dynamic characteristics of the whole tensioned structure are obtained by the basic dynamic characteristics of the model, such as natural frequency, damping ratio, modal mass, modal damping, modal stiffness and mode shape. Compared with the theoretical analysis, Who agree well, providing important basic data for dynamic analysis of wind-induced vibration and earthquake response of the whole tower in the future.