ABSTRACT
Two design schemes are proposed of 200,000 tonnage sheet-pile bulkheads with relief platform with forefront water depth of 20.5 m, the largest sheet-pile wharfs in China. The first scheme is of a rigid front wall of T-shaped reinforced concrete diaphragm with pile group of two rows of reinforced concrete cast-in-place piles. Second scheme is of flexible front wall of composite steel pipe pile with pile group of three rows of piles. Two series of geotechnical centrifuge model tests have been carried out to investigate their performance of sheet-pile bulkheads. It is shown that the bulkheads of two design schemes are verified to be feasible in that the displacements of front wall are within allowable limit. It is also found that characteristic bending moment values of front wall is greater than those of lateral pile group in first scheme, whereas the opposite is true in second scheme.
