Strength Degeneration of SRUHSC Column to RC Beam Joint Subjected to Reversal Cycle Load
Strength Degeneration of SRUHSC Column to RC Beam Joint Subjected to Reversal Cycle Load
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DOI：
10.4028/www.scientific.net/amm.578-579.580
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发表时间：
2014-07
期刊：
影响因子：
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通讯作者：
Changwang Yan;Ju Zhang;Shu Guang Liu;Yong Yang
中科院分区：
文献类型：
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作者：
Changwang Yan;Ju Zhang;Shu Guang Liu;Yong Yang
为了研究高强混凝土柱与钢筋混凝土梁节点在反复荷载作用下的强度退化，基于高层建筑原型节点的半比例模型，设计了6个内部节点试件。进行了不同轴压比和体积配箍率的反复加载试验。描述了高强混凝土柱与钢筋混凝土梁节点的强度退化过程。讨论了λj与轴压比或体积配箍率的关系。结果表明，在反向循环荷载作用下，所有节点的强度在每次位移下都退化，且随着位移的增大退化速度加快；随着轴压比的增大，节点的强度退化较快，而随着体积配箍率的增大，节点的强度退化较慢。试验结果表明，试验参数对高强混凝土柱与钢筋混凝土梁节点在反复荷载作用下的强度退化有明显影响。
In order to investigate the strength degeneration of SRUHSC column to RC beam joint subjected to reversal cycle load, six interior joint specimens were designed basing on half-scale model of prototype joint used in high-rise buildings. A reversal cycle loading test was carried out and test parameters included various axial load ratio and volumetric stirrup ratio. Strength degeneration of SRUHSC column to RC beam joint was described. A discussion on relations between λj and applied axial load ratio or volumetric stirrup ratio was presented. It was found that strength of all the joints degenerated in every displacement and degenerated more quickly with the increment of displacement during the reversal cycle loading, and that the strength of all the joints degenerated fast with the increment of applied axial load ratio and slowly with the increment of volumetric stirrup ratio. The experimental results indicated that test parameters had obvious influence on the strength degeneration of SRUHSC column to RC beam joint subjected to reversal cycle load.