The Influence of Lateral Restraining Stiffness on the Box-Girder Superstructure under Unbroken Solitary Waves

At present, box-girder superstructures are commonly used in coastal bridges, and their hydrodynamic performance under extreme waves such as tsunamis has attracted a lot of attention. There is lack research focusing on the effect lateral restraining stiffness wave condition. In this paper, two-dimensional numerical model based RANS equation SST k-? turbulence established. Combined with dynamic mesh updating technique, superstructure characteristics movable solitary were investigated. To ensure quality, computational domain divided into several regions that correspond to specific types body motion. The verified by comparing it other simulation results experimental results. forces unbroken discussed. show horizontal vertical action can be reduced reducing stiffness. However, decrease stiffness, displacement would increase. Therefore, limit should fully considered practical engineering, appropriate selected reduce action, so improve safety superstructure. It great importance study interaction between waves, which will help have deeper understanding disaster resistance bridges.