摘要
提出一种抗侧力钢-木组合柱结构形式,以弯折钢筋结合木肢柱及横梁抵抗水平侧向力。通过变换钢筋的弯折形式,对三组钢-木组合柱足尺试件进行拟静力试验,观察其试验现象和破坏形态,研究荷载-位移滞回曲线、骨架曲线、延性系数、刚度退化及耗能能力等抗震指标。结果表明:三组试件的滞回曲线均呈较为饱满的弓形。钢-木组合柱破坏时的等效黏滞阻尼系数为0.152~0.175,说明钢-木组合柱具有良好的耗能能力,满足一般建筑结构的抗震需求,其中ZHZA组的耗能能力最好。采用ABAQUS软件对三组模型进行水平低周反复荷载作用下的有限元分析,其结果与试验结果吻合良好。
A kind of steel-wood combined column structural style for lateral force resistance was proposed using bending steel bars combined with wooden columns and beams to resist horizontal lateral force. Quasi-static tests for three groups of steel-wood combined columns were conducted by changing bending forms of steel bars,the test results and failure modes were observed and recorded. The aseismic indexes including load-displacement hysteretic curves,skeleton curves,ductility coefficient,stiffness degradation and energy dissipation capacity were studied. The results showed that the hysteretic curves of three groups of specimens are relatively full bow-shaped; when steel-wood combined columns are damaged,their equivalent viscous damping coefficients are 0. 152—0. 175,so these steel-wood combined columns have a good energy dissipation capacity to meet the aseismic requirements of general building structures; the energy dissipation capacity of the ZHZA group is the best. The FE analysis for three groups of specimens under horizontal low cyclic loading were conducted by using the FE software ABAQUS. The FE analysis results agreed well with those of tests.
作者
赵东拂
王磊
孟颖
ZHAO Dongfu;WANG Lei;MENG Ying(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Beijing Collaborative Innovation Center of Energy-Conservation and Emission Reduction Technology,Beijing 100044,China;Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material,Beijing 100044,China;Beijing Advanced Innovation Center for Future Urban Design,Beijing 100044,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2018年第11期61-70,135,共11页
Journal of Vibration and Shock
基金
国家自然科学基金项目(51378045)
关键词
弯折钢筋
钢-木组合柱
抗侧力性能
拟静力试验
有限元分析
bending steel bars
steel-wood combined column
lateral force resistance
quasi-static test
finite element（FE） analysis
