【摘要】 针对大底盘双塔结构温度应力问题,通过有限元软件SAP2000建模对考虑温度和地震作用下的某大底盘多塔结构进行了反应谱分析,定量地分析了温度作用对大底盘双塔高层结构的内力分布和抗震性能的影响。结果表明,温度效应虽对结构的抗震性能影响不大,但会造成局部构件应力集中,也会改变双塔底部结构构件的内力分布情况;落地剪力墙的抗剪能力会被削弱,致使底层框架柱承担更多的地震剪力,在抗震设计时应予以注意。更多还原

【Abstract】 The currently study on two- tower structure with enlarged base only focused on the seismic behavior and the consideration of the temperature stress was rarely taken into account. To address the above problem,the seismic behavior of structure under the combined effect of temperature and seismic action was discussed under response spectrum analysis by using the finite element analysis software SAP2000. It can be concluded that the temperature effect on the seismic performance is not huge,but it causes stress concentration in the local components of twin- towers structure,and the distribution of internal forces are changed; shear capacity of the wall are weakened,resulting in the bigger seismic shear force on the bottom column of frame,it should be pay more attention in the seismic design.更多还原