超限框架-核心筒结构加强层内力分布分析

Analysis of Seismic Mechanical Properties on Each Strengthened Story in Framework-core Tube Structure

超限框架-核心筒结构设置加强层,有时不止一道,为此对超限框架-核心筒结构加强层的内力分布进行分析。采用SAP2000有限元软件建模、选用EL-Centro波进行弹性时程分析,得到每道加强层承担的剪力、弯矩值以及所占基底剪力、弯矩的比例,表明这个比例与加强层数量有关。

The strengthened story in framework-core tube structure is always more than one,seismic mechanical properties on each strengthened story in framework-core tube structure are analyzed. The modal is built by finite element analysis software SAP2000,and the EL-Centro seismic wave is selected to conduct linear time-history analysis. According to calculation results,which show shear force and bending moment values of each outrigger,and the ratio of base shear and bending moment and it is concluoled that the ratio of shear force and bending moment between each outrigger and base is related to number of outriggers.