Sensitivity analysis of dynamic response for deep-water all-vertical-piled wharves during large ships berthing considering structural flexibility
The structural characteristics and dynamic responses of deep-water all-vertical-piled wharves differ from those of traditional wharves.To study the dynamic response of the all-vertical-piled wharf structure during normal ship berthing and understand its structural characteristics,accurate simulation of the interactions between ships,rubber fenders,and wharf structure is essential.Initially,a three-dimensional numerical model to simulate the interaction among the large ship,rubber fenders,and the wharf structure was established based on Ansys/LS Dyna and validated using existing methodologies.Subsequently,research on the dynamic response characteristics of deep-water all-vertical-piled wharf structures during normal ship berthing was conducted,analyzing the system's acceleration time-response,displacement time-response,and internal energy time-response under various pile diameters,fender stiffnesses,and pile lengths.The study found that the elastic deformation of the deep-water all-vertical-piled wharf structure could absorb a significant portion of the impact energy,up to 39%;larger pile diameters increased the structure's lateral stiffness,resulting in more pronounced local vibrations and less energy absorption;higher rubber fender stiffness led to faster energy transfer rates and more energy absorption by the fenders;and longer piles reduced the structure's lateral stiffness,leading to more significant overall vibrations and increased energy absorption by the structure.
deep-water all-vertical-piled wharfship collisionrubber fendersship berthingimpact energy
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