装配式钢板剪力墙自复位平面钢框架动力时程对比分析

Analysis of finite element dynamic time history of resilient prefabricated prestressed steel frame with steel plate shear wall

利用ABAQUS有限元软件对装配式钢板剪力墙自复位平面钢框架和装配式自复位平面钢框架进行El Centro地震波8度多遇地震、设防地震、罕遇地震以及罕遇地震(0. 3g)作用下的动力时程对比分析。分析结果表明:在多遇地震和设防地震作用下,钢板剪力墙的设置提高了装配式自复位钢框架结构的抗侧刚度,有效控制结构层间位移角;随着震级的增加,钢板剪力墙产生塑性并耗能。罕遇地震作用下,装配式钢板剪力墙自复位平面钢框架滞回曲线饱满,有效控制了主体结构框架柱的塑性发展。震后结构残余变形小,自复位优势明显,能够承受密集且震级较高的余震。

Finite element software Abaqus was utilized to carry out the time-history analysis toward prefabricated self-centering steel frame with steel shear walls and prefabricated self-centering steel frame under EL-Centro ground motions of 8 degree frequent earthquakes,design earthquakes,rare earthquakes and rare degree earthquakes( 0. 3g),as well as the comparison analysis of both frames was completed. The analyzing results show that the installation of shear wall improved the lateral stiffness of the self-centering steel frame and effectively controlled interstory drift of the structure under the frequent and design earthquakes. Steel shear wall started to dissipate energy by developing plasticity with the increase of the magnitudes. Under the action of rare earthquakes,the hysteretic curves of the prefabricated self-centering frame with steel shear walls was full as well as the plasticity development of the main components of the structure was controlled. The residual deformation of the structure is small,the advantages of the self-centering capacity is evident,which the structure can bear the intensive aftershocks with large magnitudes.