To the problem of difficulty in real-time quantitative monitoring of mooring forces during the passage of large ships，the mechanical model of the strain- mooring force load response of the floating bollard of ship lock is modified.Real ship tests are conducted to verify and analyze the modified model，and the measured duration curve data of mooring forces of the passing ship are collected.The results show that the modified mechanical model for the load response of the floating bollard basically conforms to the real-time trend of measured mooring force of the ship passing through the lock.The relative error between the measured peak mooring force of the ship and the model inversion calculation value is within ± 5%.The modified mechanical model can accurately predict the load situation of the floating bollard of ship lock.The research results provide a reference for the digital monitoring and engineering construction of the floating bollard of ship lock.