Ocean College, Zhejiang University, Zhoushan
Taking the collision between a construction vessel and four-pile pipe frame foundation in a certain sea area of the South China Sea as the background, combined with the current research, the bearing capacity of the damaged area of the catheter frame is analyzed, and the axial bearing capacity and limit bending moment at the depression of the damaged section are calculated. At the same time, the reinforcement and repair methods of damaged components in the offshore field are briefly described, and the theoretical research status of clamp technology and its application in practical engineering are discussed. Based on the typical grouting clamp repair technology, a new scheme of reinforcing and repairing using 80MPa high-strength grouting material combined with clamp technology is proposed, and the combined structure after reinforcement is numerically simulated by finite element software, and the simulation results show that the combined structure can effectively improve the force condition of the damaged area of the catheter frame and improve the bearing capacity of the structure. Finally, the construction process of the scheme is briefly described in order to provide a reference for the actual project.