U型钢棒阻尼器对基础隔震混凝土框架剪力墙结构受力性能影响研究  

Research on the influence of U-shaped steel bar damper on the mechanical performance of base isolation concrete frame-shear wall structure

作　　者：周博文 程蓓 ZHOU Bowen;CHENG Bei(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044

出　　处：《四川建筑科学研究》2025年第1期1-9,共9页Sichuan Building Science

基　　金：国家重点研发计划资助项目(2017YFC0703600);北京市自然科学基金面上项目(8162014)。

摘　　要：利用ABAQUS有限元软件,针对基础隔震混凝土框架剪力墙结构的抗震性能进行了分析。将U型钢棒阻尼器应用于无铅芯隔震橡胶支座中,并调整了阻尼器数量,采用非线性静力推覆法研究了其对结构损伤模式、延性和耗能能力的影响。结果表明:U型钢棒阻尼器隔震橡胶支座能够改变上部混凝土框架剪力墙结构的损伤模式,减轻主体剪力墙的损伤,并提高整体结构的承载力、耗能能力和延性;U型钢棒阻尼器数量对上部结构的受力性能提升效果有限。ABAQUS finite element software was used to analyze the seismic performance of base isolation concrete frame-shear wall structure.The U-shaped steel bar dampers were applied to the lead-free isolation rubber bearing,the number of dampers was adjusted,and the nonlinear static pushover method was used to study its influence on the structural damage mode,ductility and energy dissipation capacity.The results show that the U-shaped steel bar damper isolation rubber bearing can change the damage mode of the upper concrete frame-shear wall structure,reduce the damage of the main shear wall,and improve the bearing capacity,energy dissipation capacity and ductility of the overall structure.However,the number of U-shaped steel bar dampers has certain limitations on the improvement of the mechanical performance of the superstructure.

关 键 词：基础隔震混凝土框架剪力墙结构 U型钢棒阻尼器 抗震性能 损伤模式 耗能能力 

分 类 号：TU375[建筑科学—结构工程]