DESIGN AND EXPERIMENTAL STUDY OF HONEYCOMB RETAINERS FOR SEISMIC ENERGY-DISSIPATION

The girder bridges which have been widely used are prone to occur lateral girder-falling damage under the earthquake action. In order to improve the limit and energy dissipation effect of the retainers under the earthquake action, based on the characteristics of the energy dissipation of the honeycomb structure under axial compression and combined with the design concept of double-retainer in preventing girder falling, a honeycomb type seismic energy-dissipation retainer was designed. The ABAQUS software was used for numerical simulation and analysis of the retainers, and a full-scale quasi-static test was carried out. The results of the numerical simulation and test were compared. It was found that the numerical simulation analysis and the test results were in good agreement, the structural hysteresis curve was full, and the mechanical model was clear. The following conclusions were drawn: the honeycomb-type seismic energy-dissipation block showed a good bearing capacity, and there was no obvious stiffness degradation during the cyclic loading; the structure had good energy dissipation effect, simple structural form, clear force transmission, which could be widely applied to practical engineering.