Multifunctional impact experiment platform and method capable of continuously applying axial force

Abstract

The invention discloses a multifunctional impact experiment platform and method capable of continuously applying an axial force. The device comprises seven parts including a rigid support, a fixed end, a sliding end, a sliding assembly, a loading assembly, a hydraulic assembly and a data acquisition assembly and is characterized in that an annular spring is assembled on a jack between the sliding end and the hydraulic assembly; pressure is pre-applied to a test piece through a compression spring; in an impact experiment, the spring is gradually stretched and the axial force is reduced; an axial force gradually weakening process of an axial pressure component is really simulated under an impact or explosion load effect; four inner thread bolt holes are pre-formed in the bottom of the sliding end; after the sliding end is fixedly connected with the rigid support, a failure process of a bent component under an impact load can be simulated; and the multifunctional impact experiment platform and method have the advantages that the whole structure is simple and compact and experiment operation is simple and convenient.

Description

technical field [0001] The invention relates to an experiment platform, in particular to a multifunctional impact experiment device capable of continuously applying axial force. Background technique [0002] Compression components (such as columns, walls, etc.) are important components of building structures, and their impact resistance is an important indicator for evaluating the collapse resistance of structures. [0003] Experiments on such components are usually carried out with the help of hydraulic testing machines or simple jacks. However, once the compression component undergoes axial displacement due to lateral impact, the loading instrument is separated from the specimen and the axial force disappears, which is different from the structural collapse process. The situation of the weakening of the axial force does not match, and the data based on such experiments cannot provide reliable support for an accurate understanding of the impact resistance behavior of compre...

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Problems solved by technology

[0003] Experiments on such components are usually carried out with the help of hydraulic testing machines or simple jacks. However, once the compression component undergoes axial displacement due to lateral impact, the loading instrument is separated from the specimen and the axial force disappears, which is different from the structural collapse process. The situation of the weakening of the axial force does not match, and the data based on such experiments cannot provide reliable support for an accurate understanding of the impact resistance behavior of compression members

[0004] In addition, traditional testing machines can only carry out impact tests on components whose boundary conditions are fixed at one end and free at the other end, and the working conditions are single

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