摘要
为研究钢骨超高强混凝土柱的抗震性能,对6根钢骨超高强混凝土柱(λ=2.6)在低周反复荷载下进行试验,并且分析了试件的破坏过程和破坏方式,以及轴压比、配箍率及型钢形式对延性的影响。试验结果表明:钢骨超高强混凝土柱主要破坏形态为弯曲破坏和弯剪破坏,发生弯曲破坏的试件荷载-位移滞回曲线饱满,下降段较为平缓,表现出良好的抗震性能,发生弯剪破坏的试件荷载-位移滞回曲线狭窄,下降迅速,抗震性能较差;配箍率高、轴压比小、配置H型钢试件抗震性能好。
To study the seismic performance of steel-reinforced ultra-high-strength concrete columns ,the test research of 6 steel-reinforced ultra-high-strength concrete columns (λ = 2 .6) subjected to low-cyclic repetitional loads was carried out .Then ,the specimens’ failure process and modes as well as the effects of the axial compression ratio ,reinforcement ratio and section steel shape on the ductility of the steel-reinforced ultra-high-strength concrete columns were discussed . The experimental results show that the main failure patterns of the specimens are bending failure and shear failure .The hysteretic curves of bending failure specimens are plump with relatively slow descending branches ,showing excellent seis-mic behavior .However ,the hysteretic curves of shear failure specimens are slim with relatively quick descending branch -es ,showing bad seismic behavior .The specimens with the high reinforcement ratio ,high axial compression ratio and H-shaped section steel show excellent seismic behavior .
出处
《水利与建筑工程学报》
2014年第2期105-111,共7页
Journal of Water Resources and Architectural Engineering
基金
国家自然科学基金资助项目(51078059
51178078)
关键词
钢骨超高强混凝土柱
轴压比
配箍率
型钢形式
抗震性能
steel-reinforced ultra-high-strength concrete column
axial pressure ratio
reinforcement ratio
sec-tion steel shape
seismic performance