关键词: 防落梁装置, 耗能, 试验研究, 地震响应, 抗震性能

Abstract: For the sake of improving the overall seismic performance of concrete beam bridges, a new-type anti-seismic device having functions of energy consuming and position limitation was developed. According to the design idea of the coupling beam device, the E-shaped steel plates and the connecting steel plates were assembled, and a reasonable non-working length and a maximum working length were set. A new energy-dissipating anti-seismic device was developed to achieve the multi-level seismic performance of bridges. The energy-saving capacity was studied. This method was applied to a concrete continuous girder bridge. The effects of the device on the relative displacements of the piers (beams) and the shearing force acting on the pier bottom were studied. The stress state and energy consumption of the device under the earthquake were examined. The results show that the shape of the hysteresis curve of the energy-dissipating anti-seismic device is plump and the device has a good energy consumption capacity, that the device can effectively reduce the seismic response of bridges, that the relative displacement of piers (beams) is reduced by about 60%, and that the non-transition pier shearing is reduced by about 40%.

Key words: anti-seismic device, energy dissipation, experimental research, earthquake response, seismic performance