双向蝴蝶形钢板墙抗震性能有限元研究

Finite element study on seismic behavior of double-directional butterfly-shaped steel plate wall

为进一步研究双向蝴蝶形钢板墙的抗震性能,在试验的基础上,利用通用有限元软件Abaqus进行参数模拟分析,着重研究竖向蝴蝶板和横向蝴蝶杆参数对钢板抗震性能的影响。结果表明:Abaqus软件能够较为精确地对双向蝴蝶形钢板墙试验滞回性能进行跟踪模拟;竖向蝴蝶板数量m和其蝴蝶形端部高度l与厚度t的比值β共同影响钢板墙承载力,且增大m和β,钢板承载力随之增加;横向蝴蝶杆行数n和其宽度b与厚度t的比值α对着钢板墙的耗能能力具有显著影响,且随着横向蝴蝶干数目增加,试件滞回曲线愈加饱满,总耗能量也随之提高,而当其他参数一定仅增加宽厚比时,尽管相应试件加载前期耗能性能优异,但加载后期过大的面外变形却制约其耗能能力。

In order to further investigate the behavior of double-directional butterfly-shaped steel plate wall,the general finite element software Abaqus was used for parameter analysis based on the test to investigate the effects of the parameters of the vertical butterfly plate and horizontal butterfly link on the seismic behavior of the steel plate wall.The results show that Abaqus software can accurately track and simulate the hysteretic performance of the double-directional butterfly-shaped steel plate wall obtained from tests.The load-carrying capacity of steel plate wall is influenced by the number of vertical butterfly plates m and depth-thickness ratio of the ends of the vertical butterfly platesβ,and increases with the increase of m andβ.The energy dissipation behavior of the steel plate wall is significantly affected by the number of horizontal butterfly links and the width-thickness ratio of the horizontal butterfly links.What's more,with the increase of the number of horizontal butterfly links,the hysteresis curve of the specimen becomes more plumb and the total energy consumption tend to improve while other parameters remain unchanged,only the width-thickness ratio is inclined,the energy dissipation of the specimen is brilliant in the early stages of loading,but the excessive out-of-plane deformation in the later loading stages restricts the energy dissipation ability.