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

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. © 2024 Chinese Vibration Engineering Society. All rights reserved.