This paper introduces the structure of expansion joints and the implementation of modified expansion joint rubber strips, which were effectively used in Yangshan deepwater harbor project phase Ⅲ. Based on the field data, this paper analyzes the advantages and disadvantages of the expansion joints and provides some suggestions regarding the settings of the expansion joint width and the concavo-convex tenon width and the strengthening of the tenon structure in the open-type wharf on piles. It can be referred to in the design of open-type wharf on piles and in the revision of related specifications.