Method for protecting safety and stability of movable museum collection in earthquake

Abstract

The invention relates to a method for protecting the safety and stability of a movable museum collection in an earthquake. The method comprises the following steps: a museum collection imitation is subjected to a material characteristic test in a laboratory, so that tensile and compression resistance limit stress, shear resistance limit stress and a dynamic modulus of elasticity and a dynamic modulus of shearing of a material are obtained; after a stress reduction factor K is fetched, the tensile and compression resistance limit stress and the shear resistance limit stress of the imitation are multiplied by the K, and the product serves as allowable dynamic stress of the museum collection; allowable acceleration is calculated according to the D'Alembert's principle; the stability of the museum collection is classified into three stability levels according to the allowable acceleration, the friction factor and the height-width ratio (namely the allowable vibration index)of the museum collection; finally, an exhibition stand is designed and arranged, and the museum collection is placed according to a classification result. The discriminating method is simple and practicable, and the result is accurate; the allowable vibration index provides a scientific basis and a quantitative criterion for control cover the safety guarantee of the museum collection in an earthquake.

Description

technical field [0001] The invention relates to the protection of cultural relics collected in cultural relics buildings under earthquake conditions, in particular to a method for protecting the safety and stability of movable cultural relics under earthquake action by controlling the allowable acceleration index and stability index corresponding to the safety level of cultural relics method. Background technique [0002] The evaluation of the seismic safety of movable cultural relics is currently mainly based on the judgment of cultural relics under macroscopic responses such as slipping, overturning, and shaking. Combining the earthquake-proof experience of the Getty Museum in Los Angeles, Lowry and others pointed out that the center of gravity of movable cultural relics is the main factor affecting their safety, and derived a theoretical formula for determining the stability of movable cultural relics through the aspect ratio. When the effective aspect ratio is not greate...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the deficiencies in the prior art, and provide a method to control the allowable vibration index of cultural relics under the action of an earthquake according to the safety level, analyze and analyze the seismic response and safety evaluation of the cultural relics in the collection under the microscopic response situation. Discrimination and discrimination methods are systematic and specific, and the judgment conclusion is true and reliable. It is a method to protect the safety and stability of movable cultural relics under the action of earthquakes, and solve the problem of insecurity and instability of movable cultural relics under the action of earthquakes. The safety of the macro motion response judgment, the single and general judgment index, the complex judgment method, and the inaccurate results; at the same time, it also solves the problem that there is no judgment on the microscopic response of the cultural relics in the seismic response analysis and safety evaluation of the cultural relics in the collection. methods, and did not carry out hierarchical control of cultural relics according to the safety level, so it is impossible to truly and accurately judge the safety performance of cultural relics under the action of earthquakes

Images