With the large-scale construction of wharves,increasing demands are being placed on the bearing capacity of steel sheet pile wharves.The conventional steel sheet pile structure is subjected to high stress and high cost under deep water conditions,while the curtain-type steel sheet pile structure can effectively share the active soil pressure of the rear soil,optimize the stress conditions of the front sheet pile and anchoring system,and has the advantages of reasonable load distribution,small deformation,and economic efficiency.However,the current research on the stress characteristics and influencing factors of the curtain type steel sheet pile structure is not deep enough and needs further research.Based on a steel sheet pile wharf project,this paper uses model analysis software to establish a model and analyze the factors that affect the stress characteristics of curtain type steel sheet piles.The results show that the economic performance of the curtain-type steel sheet pile structure is improved by approximately 17.9% relative to the conventional steel sheet pile structure.When the distance between curtain piles is 2.8 m and the pile diameter is at least 0.8 m,the curtain effect can be fully utilized,leading to a pronounced soil arching effect.However,if the distance between the curtain pile and the front sheet pile exceeds 7 times the diameter of the curtain pile,the curtain effect diminishes considerably.In practical engineering applications,it is essential to comprehensively consider the loading and unloading processes in conjunction with the requirements of the upper structure.This study is intended to offer valuable references and guidance for the design and application of deep-water curtain-type steel sheet pile wharves.