CAJ | 학술논문

进行了1根普通混凝土柱和3根不同再生骨料取代率的再生混凝土柱模型的低周反复荷载试验研究,模型按1/2缩尺.在试验基础上,分析了其承载力、刚度及其退化过程、滞回特性、延性、耗能能力、破坏形态等,提出了基于混凝土强度折减的承载力实用计算方法.研究表明:随着再生骨料取代率的增加,其混凝土的弹性模量明显减小,试件初始刚度明显下降、承载力呈下降趋势、耗能值下降,抗震能力呈下降趋势.再生混凝土柱可用于多层结构轴压比较小的柱的抗震设计.
진행료1근보통혼응토주화3근불동재생골료취대솔적재생혼응토주모형적저주반복하재시험연구,모형안1/2축척.재시험기출상,분석료기승재력、강도급기퇴화과정、체회특성、연성、모능능력、파배형태등,제출료기우혼응토강도절감적승재력실용계산방법.연구표명:수착재생골료취대솔적증가,기혼응토적탄성모량명현감소,시건초시강도명현하강、승재력정하강추세、모능치하강,항진능력정하강추세.재생혼응토주가용우다층결구축압비교소적주적항진설계.
Experiment researches on four 1/2 scale columns under cyclic loading action were done, one of them is a natural concrete column and the others are recycled concrete columns with different recycled aggregate substitution ratios. On the basis of the experiments, load-carrying capacity, stiffness and its deterioration process, hysteretic loop, ductility, energy dissipation, failure patterns are analyzed. A practical calculation method of load-carrying capacity based on concrete strength reduction is proposed. The researched results show that the elastic modulus of concrete significantly are reduced,with the replacement ratios of recycled aggeregate are increased,the initial stiffness of the specimens significant is dropped, a downtrend of the load-carrying capacities is shown, the energy dissipation values are decreased, a downtrend of the seismic behavior also is shown. Recycled concrete can be used for multistory aseismic structure columns with low axial compression ratio.