Research and Experiment on Repairing Damaged Jacket with Grouting Clamp Parametric Design Method

This article studies the development of local rod defects caused by collisions between offshore platform jackets and ships, and proposes a parameterized design method for grouting clamps. We use clamps to reinforce and repair the defective areas. The principle is to make the axial displacement at the defect section zero, and calculate the structural size of the clamp from the center of the local defect to both sides. A grouting clamp with adjustable length was designed and a bidirectional embedded wedge-shaped tooth block structure was built in to improve mechanical preload. By comparing damage conditions with different defect ratios, the reinforcement and repair effect of grouting clamps on locally damaged jacket was studied. The bearing capacity of the defective jacket members repaired by the clamps increased by up to 80%, indicating that the grouting clamps have strong repair ability.