해양 스틸자켓의 강도에 관한 다양한 보강재효과

초록

Due to a long period exposure to severe environment and a corrosion by impact from berthing and mooring, offshore strucrures can be damaged and corroded. To replace the entire members would implicat a great cost and a technical difficulties. In the study, the effect of various stiffeners on damaged secton is investigated. The stress of surrounding members are checked with a stiffener attached to confirm the allowable strength of the structure. The specific diagonal brace is assumed to be damage. And various type of stiffeners are applied to obtain the minimum allowable strength of the surrounding members. The offshore jacket which was installed in Vietanm South China Sea is used for study. The K-brace and diagonal brace members are particularly investigated to find the optimum stiffener position and size. The results show that stiffeners can be effectively applied to the damaged and weak areas to imporve the strength of surrounding members.