2023 Volume 79 Issue 10 Article ID: 22-00212
In order to clarify the fatigue characteristics of the concrete floating of the offshore wind platform, fatigue loading tests were conducted on the small-scale partial specimens under constant compressive stress condition assuming for the service environment. As a result, the fatigue life was about 102 times shorter in water than in air, as in the past researches. In addition, when the stress-intensity ratio of the maximum amplitude was large, the fatigue life tended to be shorter at the joint than at the center. It was found that when the maximum amplitude was 70%, the fatigue life at the joint was one order shorter than that at the center. It is considered that the contact state of the joint surface has a great influence. It was confirmed that the fatigue life of PRC members (fck’= 60 N/mm2) can be roughly evaluated by applying the fatigue strength formula in the JSCE specifications.
