Universal initial failure device for progressive collapse experiment of long-span spatial grid structure

Abstract

The invention discloses a general device for the initial failure of a space grid structure continuous collapse experiment, comprising a first connecting pipe, a second connecting pipe, a connecting part, a cross bar, a ferrule, a first steel pipe, a second steel pipe, a clamping piece, An eccentric wheel, a support rod, a base, a shaft and a drive system for rotating the shaft; the ferrule is vacantly sleeved on the connecting part, the upper end of the first steel pipe is connected with the ferrule, and the lower end surface of the first steel pipe is connected with the second steel pipe The upper end surfaces of the upper end surfaces are buckled together to form a cylindrical structure; the clamping piece includes a housing, a spring, a movable plate, and a number of first weights fixed on the outer wall of the housing and evenly distributed, and one end of the movable plate passes through the end surface of one end of the housing Inserted into the casing, the eccentric wheel contacts and presses the end face of the other end of the movable plate, one end of the spring is sleeved and fixed on the side of the movable plate, and the cylindrical structure passes through the casing and the movable plate. The invention can realize the automatic starting of the progressive collapse device.

Description

technical field [0001] The invention belongs to the technical field of progressive collapse experiments, and relates to a general device for initial failure, in particular to a general device for initial failure of components in a continuous collapse experiment of a large-span space grid structure. Background technique [0002] When carrying out large-scale progressive collapse experiments, the start-up of the traditional progressive collapse device is realized by manual overthrow. This method is simple and convenient, but for large-scale progressive collapse, since it cannot be automated, the safety and Reliability is poor, and the starting structure of the progressive collapse device has not been involved so far. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a universal device for initial failure of progressive collapse experimental components of a large-span space ...

AI Technical Summary

Problems solved by technology

[0002] When carrying out large-scale progressive collapse experiments, the start-up of the traditional progressive collapse device is realized by manual overthrow. This method is simple and convenient, but for large-scale progressive collapse, since it cannot be automated, the safety and less reliable and so far not involved in the actuation structure of progressive collapse devices

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