【摘要】 基于高层连体结构受力特点与地震地面加速度在强震阶段的大致平稳性,采用串并联质点系层模型,运用虚拟激励法先求出单塔结构在各个楼层位置处的自谱值,再以连体毗邻楼层的自谱响应作为连接体多点完全相干的平稳随机激励,求出结构各楼层层间位移标准差及连体相对位移标准差,变换连体位置详细讨论了连体位置对结构动力特性、毗邻结构层间位移标准差及连体自身相对位移标准差的影响。研究结果表明:连体位置对结构刚度较弱的单塔的影响大于刚度较强单塔;连体的响应标准差随连体位置上升而逐渐加大;连体的响应标准差远大于楼层层间位移标准差。同时,分析了结果产生的原因,为高层连体结构的设计与分析方法提供参考。更多还原

【Abstract】 Based on the mechanical characteristics of high-rise building connected structures and the stationary characteristics under the large earthquake,the layered model of serial and parallel mass point system in the connection structure was used,the auto-spectrum value of the monomers in connected position was found by using pseudo-excitation method first,and then displacement response was founded for the stationary random response by using the monomer’s auto-spectrum response as the stationary random excitation completely multi-point coherent with the connector,the dynamic characteristics and displacement standard deviation response of the connectors under different connection position were discussed in detail.The results showed that the influence of connection position for the single weaker tower structural is greater than strong single tower,the connectors response standard deviation is gradually increased with the connectors position change and is much larger than inter-story displacement standard deviation of the towers,and the causes to the results were analyzed,which would provide some reference for the structure design and analysis method of high-rise connective structures.更多还原