摘要
The jacket offshore platform structures working in the environment are subjected to various external conditions,such as wave loads,wind loads and corrosion of sea water.Therefore,the research on reinforcement of tubular joints has great practical value for the safety of offshore platforms.In this article,the finite element(FE)models of T-type tubular joint(T-joint)and K-type tubular joint(K-joint)are established by ANSYS software.Triangular rib reinforcement and collar plate reinforcement are used to reinforce the tubular joints.The reinforcement effects are assessed through the ultimate bearing capacity,and the influences of parameters of the rib and the collar plate on the ultimate capacity are analyzed.Besides,the effects of the two reinforcement methods are compared under the combined loads,and the results show that the reinforcement of the ribbed plate is more effective in resisting the deformation caused by bending moment,while the reinforcement of the collar plate is more effective to avoid the plastic damage caused by the axial pressure.
The jacket offshore platform structures working in the environment are subjected to various external conditions, such as wave loads, wind loads and corrosion of sea water. Therefore, the research on reinforcement of tubular joints has great practical value for the safety of offshore platforms. In this article, the finite element(FE) models of T-type tubular joint(T-joint) and K-type tubular joint(K-joint) are established by ANSYS software. Triangular rib reinforcement and collar plate reinforcement are used to reinforce the tubular joints. The reinforcement effects are assessed through the ultimate bearing capacity, and the influences of parameters of the rib and the collar plate on the ultimate capacity are analyzed. Besides, the effects of the two reinforcement methods are compared under the combined loads, and the results show that the reinforcement of the ribbed plate is more effective in resisting the deformation caused by bending moment, while the reinforcement of the collar plate is more effective to avoid the plastic damage caused by the axial pressure.
作者
QI Bao
LIN Hong
LI Ping
JIANG Kun
MA Mingjun
齐宝;林红;李萍;姜昆;马明骏(College of Pipeline and Civil Engineering,China University of Petroleum,Qingdao 266580,China;Center for Offshore Engineering and Safety Technology,China University of Petroleum,Qingdao 266580,China)
基金
National Natural Science Foundation of China(Nos.51879272,51579246)
Fundamental Research Funds for the Central Universities,China(No.18CX02074A)
