Innovation an Application of Vibratory Driving Technology to Drive Large Composite Steel Sheet Piles for Starting Project of Caofeidian Coal Terminal

A new panel type of sheet pile structure,which was first developed in China,has been used as the main quay structure of Caofeidian Coal Terminal.The structurally novel HZ975B and AZ18 10/10 large composite steel sheet piles imported from Luxemburg were used for the front wall of the quays.This is not only the first time that this type of piling project was first tried in China but the engineering piles had to first penetrate the dense sand of 20 m thick with the pile heads buried 2 m-3 m below the ground.The builders lacked the construction experience.On the basis of the summary of the experience in the pilot project,measures such as fixed type of steel truss guide with double panel and driving to both directions,vibratory driving and augering to assist driving were taken.With these measures,driving of all the steel sheet piles was completed with high quality and efficiency and the technology of vibratory driving with piles suspended suitable for the project was innovated,which may be of reference for similar projects.