基于颗粒阻尼器的多鼓型古柱抗震性能研究

为保护地震作用下历史遗迹帕特农神庙多鼓石柱，提出将破损的石鼓替换为填充颗粒的空鼓，以减轻多鼓石柱动力响应。本文基于PFC3D与FLAC3D软件，实现了离散-有限耦合作用，模拟了附有颗粒阻尼器帕特农神庙多鼓型石柱，研究了颗粒阻尼器对帕特农神庙石柱的减震效果，并分析地震强度、频率、阻尼器位置等因素对减震效果的影响。研究结果表明，将颗粒阻尼器替换破损的空鼓，PFC3D与FLAC3D耦合计算结果与试验结果基本一致，减震效果显著，说明耦合分析方法研究颗粒阻尼器抗震性能具有较高的可靠性；地震强度不同时，分层颗粒阻尼器仍可较好地耗散能量；颗粒阻尼器对结构的减震性能受激励频率的影响显著，频率越高，减震效果越好；颗粒阻尼器布置在古柱中上部减震效果优于布置在古柱下部。

Research on Seismic Performance of Multi-drum Ancient Columns Based on Particle Dampers

In order to protect the multi drum stone column of Parthenon temple under earthquake, it is proposed to replace the damaged stone drum with an empty drum filled with particles to reduce the dynamic response of the multi drum stone column. Based on PFC3D and FLAC3D platforms, this paper realizes the discrete finite joint action, simulates the multi drum stone column of Parthenon temple with particle damper, explores the damping effect of particle damper on the stone column of Parthenon temple, and studies the factors affecting the damping effect of particle damper, such as seismic intensity, frequency, damper position and so on. The results show that the coupling results of PFC3D and FLAC3D are basically consistent with the experimental results, and the damping effect is remarkable, which shows that the coupling analysis method has high reliability in studying the seismic performance of particle damper; When the earthquake intensity is different, the layered particle damper can still dissipate energy better; The damping performance of particle damper is significantly affected by the excitation frequency. The higher the frequency, the better the damping effect; The damping effect of the damper arranged at the upper end of the ancient column is better than that arranged at the lower part of the ancient column. The results of the study are of reference to the earthquake-resistant protection of similar stone-type ancient buildings in China.