There are three typical sheet pile driving methods.
1. Single Pile Driving Method
From one of corners of sheet pile walls, drive the pile one by one until the end of the project. This method is convenient, fast and does not require auxiliary support, but pile easily incline during driving, and the error accumulation is not easy to correct.
2. Screen-Piling Method
Put 10~20 sheet piles in rows into the leading guide or frame to shape it like a screen wall, then pile driver play back and forth, first drive both ends to the required depth, then pile the middle sheet pile sequentially. This method prevents the sheet pile’s larger inclination by reducing the tilt error accumulation, and easy to close up after construction. But its drawback is that construction process is a bit slow, and need the erection of a higher pile frame.
3. Piling by Waling Piece Method
At a certain height on the ground some distance from the axis, firstly build single or double layers of circle waling pieces as bracing system, then insert sheet piling one by one inside. When four corners are closed up, gradually drive sheet piles block by block in steps’ way to the designed elevation. This approach ensures flat size of sheet pile wall, squareness and flatness, it is suitable for occasions requiring higher precision, fewer pile amounts. The disadvantage is the complexity and slowness in construction, and it requires shaped sheet pile in wall closure.
( Excerpted From Three Typical Sheet Pile Driving Methods )
