砌体墙片滑移和固结振动台试验对比研究

Experimental comparative study on shaking table test of low-rise masonry wall with sliding absorption system and solid system

提出一种简易滑移减震技术,进行滑移层材料制备相关试验,同时进行单层砌体墙片滑移和固结模型振动台试验。对比不同基底约束情况下结构自振周期、加速度、位移等方面的地震反应差异。研究结果表明:在设计地震波峰值加速度较小时,滑移模型和固结模型的顶层加速度和层间位移都较小,在设计地震加速度为0.31g(1g=9.8 m/s2)时,相应为在7.5度罕遇地震作用下,固结模型出现裂缝,而滑移模型有较为明显的滑移,且相对滑移量随着地震波峰值加速度的增大而增大,上部结构在振动过程中为整体水平滑动,一直没有出现裂缝,减震效果明显。

A simply sliding seismic absorption technology was proposed, and the experiment about the material of sliding layer was carried out. At the same time, shaking table test at low-rise masonry wall with sliding absorption system and solid system was carried out. Two different forms of the corresponding of the structure in acceleration and sliding displacement, and other aspects of earthquake response were compared. The results show that when the design mesa peak acceleration is small, the corresponding of the structure in acceleration and sliding displacement is small; when the design mesa peak acceleration is increased to 0.31g （7.5 degree） of the original building, the model of solid appears cracks, while the model of sliding seismic absorption slides much and the slip increases with the increase of the peak acceleration. The model has no any cracks, and the top structure slides all together. The sliding seismic absorption structure has advantages in reducing the structural seismic response.