Abstract:In recent years,super-long and large-diameter steel pipe piles have enjoyed increasingly wide application in port projects.However,the construction of this kind of pile foundations requires a large-scale piling barge and a large water area for construction operations.Drawing on an example of an additional piling project of a wharf,this paper addresses the difficulties involving the narrow space in the rear water area,the penetration of the riprap layer by the cast-in-place pile as needed,and the super-long steel pipe pile.For this purpose,the paper puts forward the methods of impacting a guide hole to penetrate the riprap layer and lifting and driving a steel pipe pile in a piecewise manner and describes the technological process of pile driving construction,the main construction technology,and the construction equipment.Owing to the employment of the proposed methods,the project achieves a satisfactory construction effect and meets the requirements of the design and specifications.