In view of the problem that sheet pile structures are only suitable for medium and small wharfs,Which has long been besetting the field of marine construction,semi-covered and whole covered sheep pile wharf structures have been researched and developed.

Based on the technology of static camouflage nets and the conception of dynamic distortion camou- flage,we raise the theory of using shutter-camouflage nets against IR guide weapons.

A type of covering-sheet pile wharf reduces the earth pressure acting in front of piles,which can be used in deep water situations;double-rowed large pipe pile wharf gives full play of the large pipe piles to endure higher axial strength and bending strength.