Experimental Investigations on Durability and Seismic Performance of Real-scale RC Columns Exposed to Marine Environment

2004 - 2010年在冲绳沿海地区暴露的实比钢筋混凝土柱，研究了受氯化物侵蚀损伤的钢筋混凝土柱的耐久性和抗震性能。对钢筋混凝土柱进行了往复加载和恒轴力试验。结果表明，暴露六年的钢筋混凝土柱的耐久性和抗震性能与在沿海地区以外条件下保存的基准试件相比有所下降。在氯离子侵蚀钢筋混凝土柱抗弯抗剪强度计算中，采用减重比法进行配筋，计算结果与试验结果吻合较好。

Real-scaled RC columns exposed at coastal area in Okinawa, since 2004 to 2010 to find out the durability and seismic performance of RC columns damaged by chloride attack. The RC columns were tested under reversed cyclic loading and constant axial force. As a result, the durability and seismic performance of RC columns exposed for six years decreased in comparison with the benchmark specimens kept in out-of coastal area conditions. In flexure and shear strength calculations of chloride-attacked RC columns, the weight reduction ratio method is used for the reinforcements, and the estimated calculations agree with the experimental results.