摩擦摆隔震高层框架-剪力墙结构振动台试验研究

为了研究摩擦摆隔震高层结构的抗震性能，提出了摩擦摆隔震设计的具体流程，并设计了一栋12层的摩擦摆隔震框架-剪力墙结构。为考察其隔震效果，制作了相应的缩尺模型并进行振动台试验。基于试验结果，研究上部结构的楼层响应和摩擦摆隔震支座的位移响应，对比分析剪力墙下摩擦摆及框架柱下摩擦摆滞回性能的区别。研究结果表明：通过摩擦摆隔震，该框架-剪力墙结构实现了9度多遇地震弹性，设防地震、罕遇地震甚至超罕遇地震可修；结构的楼层响应显著降低，摩擦摆完全起滑后，地震强度越大，摩擦摆的隔震效果越好，且摩擦摆隔震支座具有良好的自复位能力；在9度罕遇地震作用下，剪力墙下摩擦摆发生了竖向提离抬升，对摩擦摆的滞回性能产生影响。

Shaking table test study of high-rise frame-shear wall structure isolated by friction pendulum bearings

In order to investigate the seismic performance of high-rise buildings isolated by friction pendulum isolation bearings (FPS), the detailed design process was proposed. One 12-story frame-shear wall structure isolated by FPS was designed. The corresponding scaled model was constructed and shaking table tests were conducted to investigate the seismic isolation performance of FPS. Based on the test results, the floor response of superstructure and displacement response of FPS were studied. The differences of hysteresis performance between FPS under the shear wall and that under the frame column were analyzed. The results indicate that the 12-story frame-shear wall structure remains elastic under frequently earthquake and is repairable under fortification earthquake, rarely earthquake and even very rare earthquake of intensity Ⅸ. The floor response of superstructure is significantly reduced. The seismic isolation performance becomes better with the increase of earthquake intensity after completely sliding of FPS. The self-centering capacity of FPS is proved satisfactory. Vertical lifting happens to FPS under shear wall under rarely earthquake of intensity Ⅸ and the hysteretic performance of FPS is affected.