水平地震作用下卡固件固定馆藏文物抗震效果评估方法研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (1) : 153-164.

论文

邹晓光1，杨维国1，王萌1，刘佩1，葛家琪2

作者信息 +

Evaluation method for aseismic effect of using fasteners to fix museum collections under horizontal seismic action

ZOU Xiaoguang1, YANG Weiguo1, WANG Meng1, LIU Pei1, GE Jiaqi2

Author information +

文章历史 +

摘要

震害研究表明，博物馆内展示、收藏的浮放文物在地震中易发生损坏，博物馆工作人员经常依靠自身经验采用卡固件固定文物来保护文物在地震中不受损坏，但却缺乏科学的方法来评估该抗震措施的有效性和对文物地震安全性水平的提升程度。为对卡固件固定措施的抗震效果进行合理评估，本研究针对文物震损破坏模式，基于二项逻辑回归模型提出了以文物摇摆角和接触应力为综合判别指标的文物地震易损性分析方法，最终提出了通过风险卷积计算得出文物地震风险，从而评估卡固件固定措施抗震效果的方法。本文通过开展有限元算例分析，进一步解释、论述了所提出的评估方法，并利用所提出的方法对华北某博物馆内展陈的一件珍贵文物所采用的卡固件固定措施的抗震效果进行了评估，提出了合理的改进意见。研究结果表明：本文所提出的以概率风险分析为基础的评估方法可以量化卡固件固定措施的抗震效果，为卡固件固定措施的选择提供科学依据；所开展算例分析的计算流程及评估结果可为其它馆藏文物提供有效的参考。

Abstract

Earthquake damage research showed that the freestanding museum collections housed in the museum were easily damaged when earthquakes occurred. While museum staff often rely on their own experience to secure the museum collections with fasteners to protect them from being damaged in the earthquakes, but there is a lack of scientific methods to evaluate the effectiveness and seismic performance of fasteners. In order to reasonably evaluate the seismic performance of fasteners, aiming at the seismic damage mode of museum collections, this paper put forward an analysis method of seismic fragility for museum collections based on logical regression, which takes the rocking angle and contact stress as the discriminant indexes. Finally, a method to evaluate the seismic performance of fasteners by calculating the seismic risk of museum collections through risk convolution is proposed. In this paper, the finite element analysis was carried out to further explain and verify the proposed evaluation method, and the proposed method was used to evaluate the seismic performance of the fasteners adopted for a precious museum object exhibited in a museum in North China. The results show that the evaluation method based on probability risk analysis proposed in this paper can quantify the seismic performance of fasteners for securing museum collections, and provide a scientific basis for the selection of fasteners. The evaluation process and results of the case study can provide effective reference for museum collections.

导出引用

邹晓光1，杨维国1，王萌1，刘佩1，葛家琪2. 水平地震作用下卡固件固定馆藏文物抗震效果评估方法研究[J]. 振动与冲击, 2024, 43(1): 153-164

ZOU Xiaoguang1, YANG Weiguo1, WANG Meng1, LIU Pei1, GE Jiaqi2. Evaluation method for aseismic effect of using fasteners to fix museum collections under horizontal seismic action[J]. Journal of Vibration and Shock, 2024, 43(1): 153-164

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