大底盘双塔连体带转换层复杂高层结构的抗震性能分析

大底盘多塔连体带转换层的复杂高层结构是一种新型结构形式。利用ETABS有限元分析软件建立了20种结构计算模型,采用振型分解反应谱法对大底盘双塔连体带转换层复杂高层结构进行地震反应分析:1)大底盘等高双塔连体带转换层复杂高层结构和大底盘等高双塔带转换层复杂高层结构(非连体)的地震反应分析;2)大底盘等高、不等高双塔连体结构带转换层的地震反应对比分析;3)裙房层数对大底盘等高双塔连体带转换层结构的抗震性能影响;4)转换层对大底盘等高双塔连体带转换层结构的抗震性能影响;5)连体(连体位置变化、连体层数变化)对大底盘等高双塔连体带转换层结构的抗震性能影响。

RESEARCH ON THE SEISMIC BEHAVIOR OF DOUBLE-TOWER-CONNECTED TALL STRUCTURE WITH ENLARGED BASE AND TRANSFER STORY

The multi-tower-connected structure with enlarged base is a new type of structure.Twenty analysis models were established with ETABS finite element analysis software,and vibration model response spectrum method was used to analyse the seismic response of double-tower-connected structure with enlarged base and transfer story.It was discussed the following respectively: 1) The seismic response analysis of the equal height double-tower-connected and the equal height multi-tower(unconnected) structure with enlarged base and transfer story;2) The seismic response analysis of the equal height and unequal height double-tower-connected structure with enlarged base and transfer story;3) The effect of podium stories on the seismic response of the double-tower-connected structure with enlarged base and transfer story;4) The effect of transfer stories on the seismic response of the double-tower-connected structure with enlarged base and transfer story;5) The effect of connection(the position change of connection,the story change of connection,the connection mode change) on the seismic response of the double-tower-connected structure with enlarged base and transfer story.Finally the design analysis method and design suggestions of actual engineering were put forward.