Steel Sheet Pile Cofferdam Construction Technology of Deep Water Buried Base Slab in Complex Environment
Dongjiang River Bridge is built by using the mode of separating and widening on the left.The new bridge is 1 m away from the left(the upstream side)of the old bridge and is adjacent to the old expressway,which causes great inconvenience to construction,as pier 3# and pier 4# are in Dongjiang River.The water is about 12 m deep.The base slab is buried in the gravel bed about the depth of 5.5 m under the riverbed.The base slab is built by the super-long steel sheet pile cofferdam.The end of the base slab is 2.5 m thick,and the overall cofferdam construction depth reaches up to 20 m.Compared with similar projects which use double-wall steel cofferdam or lock steel tube construction,the steel sheet pile cofferdam construction is easier,faster and more cost-efficient and has some reference values for the construction of deep water buried structure in the future.
expresswayextensiondeep water buriedbase slabsteel sheet pilecofferdamreinforcement
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