Hydrodynamic Analysis of Shallow Water Sloshing in Ship Chamber Under Longitudinal Earthquake

Shallow water sloshing-structure interaction under the coupled longitudinal and pitch motions resulted by earthquake directly affects structural safety of shiplift. However, no matter in shiplift or other related fields, there is little research on this aspect at present. As a basis dynamics analysis resistant design, an analytical method including developed modal system new engineering formulas presented to predict hydrodynamic moment force ship chamber. Based linear theory, describing shallow sloshing with infinite set functions. Then, for calculating are proposed only retaining lowest mode (n=1). Case simulations suggest that maximum error between n=1 n=100 lower than 1.3% 10.5%, respectively. In addition, resulting from pressure walls can be reasonably ignored, which accounts less 0.5% percent total moment. With respect currently used Housner model, greatly improved computational accuracy rationally supplement missing part seismic design Design code