Adjustable frame node anti-vibration test loading device

Abstract

The invention provides an adjustable frame node anti-vibration test loading device. A height difference converter block is arranged on a reaction wall, and is adjustable in height; one end of a loaderis connected with the height difference converter block, and the other end is connected to the side portion of an upper column end of a test piece; a column bottom hinge support is arranged on a rigid ground beam and is used for mounting a lower column end of the test piece; a jack is mounted on the upper column end of the test piece; the upper portion of the jack is provided with a column top rigid reaction plate; the column top rigid reaction plate and the column bottom hinge support are fixedly connected through a fixation connector; and a beam length adjusting square steel pipe sleeves the rigid ground beam to form a beam length adjusting mechanism. The beam length adjusting square steel pipe is mounted on the ground, and is adjustable in axial position. Each beam end adjustable support rod is adjustable in length, wherein one end of the each beam end adjustable support rod is connected with the beam length adjusting mechanism, and the other end there of is connected with the endportion of the test piece beam. The adjustable frame node anti-vibration test loading device is an internal force and self-balance loading system, is adjustable in size and can be used repeatedly.

Description

technical field [0001] The invention relates to a loading device for an anti-seismic experiment of a frame node, in particular to a loading device that can be adjusted according to the size of a test specimen. Background technique [0002] Frame joints are key components of building structures, and their performance directly determines the performance of the entire structure. With the continuous deepening of the research on frame joints at home and abroad, the current research on joints is based on the joint experiment. The researchers obtained the performance parameters of the joints, such as bearing capacity, ductility, energy dissipation capacity, etc., through the seismic loading of the joints, and then applied them to the actual structural design. Due to the needs of the research, in the actual test process, the size of the joints designed by each experimenter is not the same, which leads to the need to design and manufacture a set of tests that are faced by most seism...

AI Technical Summary

Problems solved by technology

This axial force loading method, while loading the vertical axial force on the test member, the force is also transmitted to the hinge support at the bottom of the loading device, which results in the limitation of the shear bearing capacity of the bottom hinge support. The test of the large axial compression ratio model specimen or the full-scale model specimen cannot be carried out

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