摘要
双重钢连柱钢支撑结构是由耗能段和支撑框架采用不同强度钢材构成的双重抗侧力体系。为了研究其在低周往复荷载作用下的滞回性能,设计了1组仅改变支撑框架钢材强度等级的连柱钢支撑试件。采用ABAQUS有限元分析软件建立有限元模型,并对试件进行了循环荷载作用下的非线性有限元分析。分析结果表明:提高支撑框架钢材强度等级,试件的极限承载力提高、剩余刚度增大、破坏程度减轻,有利于震后修复,但试件延性降低;耗能段可替换的层间侧移角下限基本不变,其上限提高明显。
Dual-steel linked-column steel braced frame is a dual lateral force system with links and braced frame using different steel strength.In order to research the hysteretic behavior of dual-steel linked-column steel braced frame,a series of specimens with different steel strength of braced frame were designed.Finite element analysis software ABAQUS was used to establish finite element models and conduct a cyclic loading on these specimens.The results showed that with the advancement of the steel strength of braced frame,the ultimate bearing capacity and the residual stiffness of the specimens increased,while the degree of damage decreased,which could be beneficial to the repair after earthquake,but the ductility decreased.The lower limits of the replacement range of the link was not changed basically,but the upper limits of the replacement range of the link increased obviously.
作者
刘尚
赵宝成
LIU Shang ZHAO Baocheng(Suzhou University of Science and Technology, Jiangsu Key Laboratory of Structure Engineering, Suzhou 215011, China)
出处
《钢结构》
北大核心
2017年第9期6-12,22,共8页
Steel Construction
基金
江苏省高校自然科学研究重大项目(15KJA560002)
研究生科研创新计划项目(SKCX15_037)
关键词
双重钢
支撑框架
可替换
钢材强度
dual steel
braced frame
replaceable
steel strength
