Application of Larsen IV type steel sheet pile cofferdam technology in high-speed railway construction

Beijing—Shanghai high-speed railway Qingyanggang bridge is the key to control the entire project.During the construction of the bridge,not only shall the safe construction of foundation pit of the main pier in water be ensured,but also shall the normal navigation and bulkhead safety be guaranteed.Thus the construction is very difficult.Combining with the engineering practice,we give a description of the Larsen type Ⅳ steel sheet pile cofferdam technology,which may serve as references for similar engineering.