CAJ | 학술논문

为减小尺寸效应影响，了解符合实际工程的钢筋再生混凝土柱压弯性能，进行了4根截面尺寸为600 mm ×600 mm、不同再生粗骨料取代率、不同配箍率的钢筋混凝土方形截面柱大偏心受压重复荷载试验，研究了其受压破坏形态、承载力、侧向受弯刚度、钢筋及混凝土应变规律。结果表明：钢筋再生混凝土大偏心受压柱的破坏过程、破坏形态、侧向受弯刚度退化、钢筋和混凝土的应变与普通钢筋混凝土柱的区别不明显。参照现行《混凝土结构设计规范》(GB50010-2010)的相关计算公式，计算钢筋再生混凝土大偏心受压柱承载力，其计算结果与试验结果符合较好。
위감소척촌효응영향，료해부합실제공정적강근재생혼응토주압만성능，진행료4근절면척촌위600 mm ×600 mm、불동재생조골료취대솔、불동배고솔적강근혼응토방형절면주대편심수압중복하재시험，연구료기수압파배형태、승재력、측향수만강도、강근급혼응토응변규률。결과표명：강근재생혼응토대편심수압주적파배과정、파배형태、측향수만강도퇴화、강근화혼응토적응변여보통강근혼응토주적구별불명현。삼조현행《혼응토결구설계규범》(GB50010-2010)적상관계산공식，계산강근재생혼응토대편심수압주승재력，기계산결과여시험결과부합교호。
To reduce the size effect and investigate the bending performance of reinforced recycled concrete columns that conform to practical projects, the paper presents a repeated large eccentric load test on four reinforced concrete columns with a square section size of 600 mm í 600 mm, different recycled coarse aggregate replacement ratios, and different transverse bar ratios. The compression failure patterns, load-bearing capacity, lateral bending stiffness and the strain regularities of the steel bar and concrete were analyzed. Results show that the differences in failure processes, failure modes, degradation of lateral bending stiffness and strain of the steel bar and concrete between reinforced recycled concrete columns and reinforced normal concrete columns under large eccentric compression are not obvious. With reference to the related calculation formula of the current code for concrete design of structure GB50010-2010, the paper calculates the load-bearing capacity of recycled concrete columns under large eccentric compression, and the results agree well with the test results.