Abstract：In order to obtain the true characteristics of ground motions acting on cultural relics, a soil-museum-showcase-cultural relics system model and a rigid foundation (museum-showcase-cultural relics) system model were established. Three seismic wave amplitude modulations were selected for time-history analysis. The analysis of parameters such as, displacement, and cultural relic angle considers the influence of soil-structure interaction (SSI). Taking the Class II site as an example, the analysis and consideration of the law of vibration transmission from soil to cultural relics under the soil-structure interaction provides more accurate data support for judging the safety of cultural relics under earthquake. The results show that for the structure, considering SSI makes the calculated seismic response smaller. For showcases and cultural relics, considering SSI under small earthquakes makes the calculated seismic response smaller. However, under the action of moderate and large earthquakes, the response of display cabinets and cultural relics when considering the SSI effect is often greater than that of rigid foundations. Based on the perspective of protecting cultural relics, the impact of SSI should be considered in earthquake analysis, especially large earthquake analysis. For the Class II site and the 4-story reinforced concrete frame structure, considering the influence of SSI, in the process of seismic wave transmission from the soil to the cultural relic, the structure enters plasticity under the earthquake, and the maximum dynamic amplification factor of the cultural relic is 5.70 (including soil, Structure, power amplification factor of the showcase), the maximum sliding amount is 129.69mm, and the phenomenon of overturning occurs. The spectrum components of each transmission link have certain differences. The structure, display cabinets and cultural relics will all have an impact on the seismic wave spectrum. The impact of each part should be taken into account in the analysis.
杨维国1，葛家琪2，李斌斌1，王萌1，刘佩1，邹晓光1. 土体-博物馆-展柜-文物全系统中地震传递规律研究[J]. 振动与冲击, 2023, 42(4): 247-255.
YANG Weiguo1, GE Jiaqi2, LI Binbin1, WANG Meng1, LIU Pei1, ZOU Xiaoguang1. A study on the seismic transmission law in the whole system of a soil-museum structure-showcase-museum collection. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(4): 247-255.
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