Experimental research on hysteretic behaviors of corroded reinforced concrete columns with different maximum amounts of corrosion of rebar
Experimental research on hysteretic behaviors of corroded reinforced concrete columns with different maximum amounts of corrosion of rebar
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DOI：
10.1016/j.conbuildmat.2016.06.002
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发表时间：
2016-09
影响因子：
7.4
通讯作者：
Shu-Yan Yang;Xiaobing Song;H. Jia;Xi Chen;Xi-la Liu
中科院分区：
文献类型：
--
作者：
Shu-Yan Yang;Xiaobing Song;H. Jia;Xi Chen;Xi-la Liu
海洋环境中受氯离子渗透的钢筋混凝土柱在地震作用下极易发生破坏。本文研究了锈蚀钢筋混凝土柱在潮差区或浪溅区条件下的滞回性能。对5组不同最大钢筋锈蚀量的锈蚀钢筋混凝土柱进行了水平荷载和竖向荷载联合作用下的试验研究。为了获得与环境条件相适应的钢筋锈蚀量，采用一种新的包裹法代替传统的浸泡法。结果表明，锈蚀钢筋混凝土柱的抗弯承载力、周向刚度、延性和吸能性能均随着钢筋最大锈蚀量的增加而降低。13.25%的最大腐蚀量和1.2mm的扩张裂纹宽度是两个重要的关键参数。
The reinforced concrete (RC) columns infiltrated by chloride ion in marine environment are much vulnerable under seismic loading. In this paper, the hysteretic behaviors of corroded RC columns were studied, which were considered as the condition of tide region or splash zone. Experiments were designed for five groups of corroded RC columns with different maximum amounts of corrosion of rebar under cyclic lateral loads combined with a constant vertical load. The traditional soaking method was replaced by a new wrapping method in order to obtain the desired amount of corrosion of rebar that was similar with the environment condition. The results showed that the flexural strength, the circular stiffness, the ductility, and the energy absorption of corroded RC column degraded with the increase of the maximum amount of corrosion of rebar. The maximum amount of corrosion of 13.25% and the dilation crack width of 1.2 mm were two important critical parameters.