This study investigates the application of static pressure pile planting technology to address challenges in the reinforcement and reconstruction of sheet pile-gravity composite wharves,including complex strata,sensitivity of existing structures,and restricted construction space.By adopting methods such as pile-pressing force decomposition analysis,equipment selection comparison,and construction process optimization,a static pressure pile planting system for steel sheet piles is established to adapt to the triple constraints of “structural protection + complex strata + limited space”.Results indicate that when penetrating various structures and complex foundation conditions,the GIKEN SCU-600M static press,combined with staged auger drilling technology using spiral drill pipes,can effectively reduce pile-end resistance,control the pile-pressing force within the range of 150-350 kN,and achieve stable penetration.After the establishment of this construction system,the construction efficiency is improved by approximately 31%,the average single-pile construction time is shortened from 3.23 h to 2.22 h,the positioning accuracy reaches ±3 mm,and the verticality error is controlled within 1%.Static pressure pile planting technology can achieve low-disturbance,high-precision,and high-reliability construction under complex conditions,making it particularly suitable for port reconstruction projects with strict structural protection requirements.The research outcomes are replicable and have popularization and application value in the reinforcement of port structures,providing a quantifiable technical reference for similar projects.