摘要
为了研究型钢再生混凝土(SRRAC)组合柱的轴压性能,设计了23个试件进行轴压试验,考虑了再生粗骨料取代率、箍筋体积配箍率和混凝土强度等级3个变化参数。通过试验观察了试件的破坏形态,获取了试件受力全过程曲线、极限承载力等重要数据,并分析各变化参数对SRRAC柱轴心抗压承载性能的影响,基于试验提出其强度计算公式。研究结果表明:SRRAC柱破坏时型钢受压屈服、再生混凝土压碎,具有良好的承载性能,各变化参数均对其承载性能有显著影响,建议再生粗骨料最优取代率为40%,该文建议强度计算公式计算值与试验结果吻合较好。研究结果可供再生混凝土组合结构的进一步科学研究和工程应用参考。
In order to study the behavior of steel reinforced recycled aggregate concrete （SRRAC） composite columns under axial compression loading, 23 specimens are designed, and three vary parameters are considered, which are the recycled coarse aggregate replacement rate, the volumetric percentage of stirrups and concrete strength grade. Failure patterns, the curves of the whole force process, and the ultimate bearing capacity are obtained, and the influence of three parameters is analyzed. Based on the experiment, a strength formula of SRRAC columns is proposed. The results show that the steel is yield, the recycled concrete is crushed, and the SRRAC columns have good bearing behavior. Three parameters have a great influence on the bearing capacity, and an optimum recycled coarse aggregate replacement rate is 40%. The ultimate bearing capacity of SRRAC columns calculated according to the proposed formula is coincide with the test results. The results can provide a reference for a further research and engineering applications of SRRAC comoosite structures.
出处
《工程力学》
EI
CSCD
北大核心
2013年第6期133-141,共9页
Engineering Mechanics
基金
国家自然科学基金项目(50908057)
广西理工科学实验中心重点项目(LGZX201102)
广西自然科学基金项目(2012GXNSFAA053203)
广西研究生教育创新计划项目(GXU11T31083)
"八桂学者"建设工程专项经费项目
广西科技攻关项目(桂科攻12118023-3)
关键词
型钢混凝土
再生混凝土
组合柱
轴心受压
承载性能
steel reinforced concrete
recycled aggregate concrete
composite column
axial compressionloading
bearing behavior
