Design and Practice for New Marine Structures of Piled Wharf with Narrow Bank Slope

The cofferdam of reclamation area is close to the front line of the liquefied chemical wharf in the south of Nanjiang Harbor of Tianjin Port.It is also emphasized by the construction company that the construction of the piled wharf must assure the stabilization of the existing cofferdam.To adopt conventional large slope will certainly impact the existing cofferdam,but the back-sheet-pile method or CDM method will cause higher cost and longer construction period if the narrow bank slope is adopted.By summarizing the construction experiences for the piled wharfs of Tianjin Port,new marine structures are presented,which are the bank slope reinforcement by underwater vacuum preloading and the bridge simply supported with slabs etc.The new marine structures are of the advantage of low cost,which guarantee the safety and stabilization of the cofferdam and satisfy the Client's requirement for optimizing land area utilization.