18 pieces of prestressed concrete box girders for Hongkong’s Tseung Kwan O Cross Sea Bridge are roll on/roll off loaded onto the ship

11 PPU+128 axle lines SPMT are used for roll on/roll off loading onto the ship. Solved the problem of compressive failure (cracking) of the bottom concrete of prestressed concrete box beams and tensile cracking (cracking) of the top concrete of box beams during the entire force conversion process of handling and loading.