Research on seismic response of museum cultural relics for shock absorption and seismic isolation

Abstract

AbstractMuseum cultural relics are valuable heritages of the development and change of the Chinese Nation over thousands of years, so the research on the protection of cultural relics is of great significance. In this paper, for the research on double shockproof of museums and cultural relics showcases in the museum, finite element models of the base fixed structure, base isolated structure and viscous fluid damper structure of the museum are established, modal analysis and time-history analysis are carried out to compare the seismic effect of the three kinds of structures. At the same time, the fixed cultural relics showcase, isolated cultural relics showcase and viscous fluid damper cultural relics showcase are established, and the seismic response analysis is carried out by inputting seismic waves and floor waves of the museums to study the acceleration and displacement response of the showcase countertop. The results show that, compared with the base fixed structure and base isolated structure of the museum, the viscous fluid damper structure of the museum can better reduce the inter-story shear force, inter-story drift and the floor acceleration response of the structure, and more effectively consume the seismic energy input to the structure, with the most obvious effect of shock absorption and seismic isolation; relative to the base fixed structure and base isolated structure, under the action of floor waves of the viscous fluid damper structure of the museum, the isolated cultural relics showcase and viscous fluid damper cultural relics showcase for shock absorption and seismic isolation are very obvious, so the isolated cultural relics showcase and viscous fluid damper cultural relics showcase are placed in the viscous fluid damper structure of the museum, all can achieve the purpose of the double shockproof of the cultural relics.