Dynamic Response and Vibration Isolation Analysis of Very Large Floating Building under Wave Action

Abstract

Taking the buildings above the very large floating structures as research object, the finite element software ANSYS/AQWA was used to carry out hydrodynamic analysis of the single module very large floating structure, and the motion response parameters were obtained. A common multi-layer steel frame structure model and a multi-layer steel frame structure model with three-dimensional vibration isolation bearings were established by using SAP2000, and dynamic time history analysis was carried out for these two steel frame building models. Studies have shown that the motion response of the very large floating structures under the action of waves can not be ignored for the upper building. After the vibration isolation bearing is added to the floating buildings, the natural vibration period of the upper steel frame structure is significantly extended, the inter-layer shear force is slightly reduced, and the inter-layer shear force, interlayer displacement and floor acceleration are increased. Compared with the installation of vibration isolation bearings for land buildings, the vibration isolation of offshore floating buildings is not effective.