Zhang, B.; Wang, Z.; Wang, T., and Sun, L., 2015. Design of hydraulic telescopic grouted clamp device and analysis of its closing collision.

The strengthening structure for the underwater jacket of offshore platform has been studied, which is used to reinforce the jacket's fragile points and damaged parts. A technical support for the strengthening area of the civil offshore platform is also provided. Besides, the overall plan is put forward on the structure of the hydraulic telescopic grouted clamp, including the general mechanical structure and the hydraulic control system. The general mechanical structure of the clamp is designed to achieve the automatically closing and locking process of the clamp and especially to resolve the self-locking problem. Moreover, the maximum impact force of the clamp can be reduced by the speed optimization design of the hydraulic cylinders and effectively improve the clamp structural strength.