【摘要】 本文通过振动台试验，对全户内铅芯橡胶隔震支座（LRB）隔震半刚性钢结构变电站的抗震性能进行了研究。研究选取了1∶3缩尺模型，遵循相似理论设计模型结构，并通过振动台试验获取了结构与设备的加速度响应以及支座位移信息。试验结果表明，LRB能有效延长结构的自振周期，避开地震波中的卓越周期，减少结构响应，且阻尼增加明显，起到了较好的减震效果。然而，电气设备的加速度放大现象较为显著，其加速度放大系数最大值达到了6.76，表明电气设备的安全和稳定性需要特别关注。特别是在带有脉冲效应的近场地震波作用下，地震波对电气设备的峰值加速度影响更为显著。本研究为全户内半刚性钢结构变电站的减隔震研究提供了试验依据。更多还原

【Abstract】 This study investigates the seismic performance of a fully indoor semi-rigid steel-structured substation equipped with Lead-Rubber Bearings(LRBs) for seismic isolation through a shaking table test. A 1∶3 scaled model was adopted, and the model structure was designed in compliance with the similarity theory. Shaking table tests were conducted to obtain the acceleration responses of the structure and electrical equipment, as well as the displacement data of the supports. Test results demonstrate that the LRB isolation bearings can effectively extend the natural vibration period of the structure, avoid the dominant period in seismic waves, and reduce structural responses. Additionally, the damping capacity of the structure is significantly enhanced, thereby achieving a favorable seismic mitigation effect. However, the acceleration amplification effect of electrical equipment is relatively notable, with the maximum acceleration amplification factor reaching 6.76. This indicates that special attention must be paid to the safety and stability of electrical equipment. In particular, under the action of near-field seismic waves with pulse effects, the impact of seismic waves on the peak acceleration of electrical equipment becomes more pronounced. This research provides an experimental basis for the study on seismic isolation and mitigation of fully indoor semi-rigid steel-structured substations.更多还原