不同截面吊脚柱RC框架结构振动台试验研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (1) : 19-27.

论文

唐洋洋1，李英民1,2，刘立平1,2，姜宝龙1，余洪翔1，姬淑艳3

作者信息 +

Shaking table test of a RC frame structure with different cross-section columns of stilted floor

TANG Yangyang1, LI Yingmin1,2, LIU Liping1,2, JIANG Baolong1, YU Hongxiang1, JI Shuyan3

Author information +

文章历史 +

摘要

为研究山地吊脚RC框架结构的地震响应特征和抗震性能，设计并制作了一个1:8缩尺的吊脚RC框架模型。通过振动台试验，对结构模型的破坏现象、动力特性、加速度反应、变形特征、楼层剪力和扭转效应进行了分析。结果表明：吊脚RC框架结构的吊脚层和2层破坏明显不均匀，吊脚层破坏轻微，且坡顶短柱破坏较早，2层柱底破坏严重，且破坏程度自坡底柱侧向坡顶柱侧递减，结构破坏主要位于吊脚层以上，最终表现为部分柱铰屈服破坏；激励水平大于罕遇地震时，吊脚层的加速度放大系数大于上部结构，楼层剪力的增大程度相对上部结构也更加显著，吊脚层变形不大，结构的最大层间位移角始终在3~4层；结构的最大层间扭转角随地震强度增加自2层转移至吊脚层。

Abstract

In order to study the seismic response and seismic performance of stilted RC frame structure on a slope, the shaking table test of a 1/8 scaled stilted RC frame structure model was performed. The structural damage, dynamic property, acceleration response, deformation characteristics, story shear and torsion effect were analyzed. The results show that the damage of the stilted story and the 2nd story of the model is very uneven. At stilted floor, the damage state is slight, and the short column at the top of the slope is damaged early than other columns. However, the damage of the column bottom at 2nd story is serious, and the degree decreases from the side of the column at the bottom of the slope to the side of the column at the top of the slope. The main damage is located at floors above the stilted story, and partial-column yield failure mechanism is displayed. When the earthquake intensity is greater than the rare earthquake, the acceleration amplification coefficient of the stilted story is greater than that of the upper floors, and the increase of shear force of the stilted story is greater. The deformation of the stilted story is small, and the maximum story drift appeared at 3rd or 4th story. The maximum inter-story torsion angle shifts from the 2nd story to the stilted story with the increase of earthquake intensity.

导出引用

唐洋洋1，李英民1,2，刘立平1,2，姜宝龙1，余洪翔1，姬淑艳3. 不同截面吊脚柱RC框架结构振动台试验研究[J]. 振动与冲击, 2023, 42(1): 19-27

TANG Yangyang1, LI Yingmin1,2, LIU Liping1,2, JIANG Baolong1, YU Hongxiang1, JI Shuyan3. Shaking table test of a RC frame structure with different cross-section columns of stilted floor[J]. Journal of Vibration and Shock, 2023, 42(1): 19-27

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