To protect museum cultural relics,slide response of a museum free-standing cultural relic under earthquakes were studied by shaking table tests.Based on actual sizes of a museum showcase,its 1 ∶ 1 scale model was built whose bottom was fixed on the shaking table.A glass cultural relic was put in the showcase by free-standing mode.By inputting 3 different types of earthquake waves with 4 different intensities,curves of displacement,acceleration response and dynamic magnification coefficient of the relic were obtained; influence of friction coefficients were discussed ; theoretical analysis further proved reliability of tests.Results show that slide response of museum cultural relics is obviously affected by earthquake intensity as well as friction between itself and the display stand surface; big friction coefficient value is needed to mitigate slide response of relic,and sizes of the display stand surface have to be big enough for slide motion of relic.%为保护馆藏浮放文物,采用振动台试验方法,研究了浮放文物在地震作用下的滑移响应.基于某博物馆陈列柜的实际尺寸,制作了1∶1比例的模型.考虑陈列柜底部固定在振动台面上,并考虑在陈列柜内部浮放一玻璃文物,研究了模型在地震作用下的滑移响应.通过输入不同类型、不同强度的地震波,获得了文物典型节点的加速度、位移响应及动力放大系数,讨论了不同摩擦条件的影响,并在理论上对试验结果进行了分析.结果表明:随着地震波强度增大及文物与陈列台之间的摩擦系数减小,文物滑移响应趋于明显.因此,为减小文物的滑移震害,陈列台面与文物之间应有较大的摩擦系数,且对陈列台面最小尺寸应有一定的要求,以避免文物因过大滑移量而产生掉落.
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