湖南大学学报（自然科学版）2016，Vol.43Issue(9)：1-9,9.
高轴压比作用下型钢超高强混凝土框架抗震试验研究
Study of Seismic Performance of Steel Ultra High Strength Concrete Frames Under the Effect of High Axial Compression Ratio
摘要
Abstract
In order to study the seismic performance of steel reinforced ultra-high strength concrete frame structure,three quasi-static cyclic tests of steel reinforced super-high strength concrete frames with one-story and one-bay were carried out.The global failure modes as well as the local failure at the bottom column-end under low-cycle reversed load were examined.The hysteretic and skeleton curves were ana-lyzed,and the strain of the beam end and column bottom was evaluated.Meanwhile,the loading and dis-placement values at different stages were evaluated,and the global deformation of the entire structure was further understood through the development of local strains.Furthermore,the strength,ductility,and energy-dissipation capacity of the frame structures were obtained through the tests.The test results show that the steel reinforced ultra-high strength concrete frames exhibit good ductility and energy dissipation capacity,showing little discrepancy between forward reverse ductility coefficient, slow degradation of strength and stiffness,and plump hysteretic curve.It is also concluded that most of the earthquake energy is dissipated in columns,while the constraint effect of beams improves the global stability of frame struc-ture as well as energy dissipation capability especially after the load-carrying capacity decreases to 80 per-cent of the ultimate load,which provides the effective load-carrying capacity in structures under severe earthquakes,and thus sudden collapse of the frame structure can be avoided.关键词
超高强混凝土/框架结构/滞回曲线/破坏机制Key words
ultra-high strength concrete/frame structure/hysteretic curve/failure mechanism分类
建筑与水利引用本文复制引用
贾金青,马英超,封硕..高轴压比作用下型钢超高强混凝土框架抗震试验研究[J].湖南大学学报（自然科学版）,2016,43(9):1-9,9.基金项目
国家自然科学基金资助项目（51178078），National Natural Science Foundation of China （）
