Experimental device and implementation method for testing self-tapping screw pull-out resistance connection performance
A connection performance, self-tapping screw technology, applied in the direction of applying stable tension/compression to test material strength, etc., can solve the problem that there is no self-tapping screw connection that is specially used for testing cold-formed steel joists and building panels. problem, to achieve the effect of improving convenience
Active Publication Date: 2019-09-20
SOUTHEAST UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the problem that the prior art does not have an experimental device specially used for testing the pull-out performance of self-tapping screw connectors of cold-formed steel keels and building panels, and proposes a method for testing the pull-out resistance of self-tapping screws Experimental device and its implementation method
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[0029] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.
[0030] An experimental device for testing the pull-out resistance of self-tapping screws, including upper connecting parts and lower connecting parts. The upper connection part includes a cylindrical pin-shaped connecting block-1 and a square steel end plate 2, and a through hole-11 is provided on the outer peripheral surface of the cylindrical pin-shaped connecting block-1, and the cylindrical pin-shaped connecting block-1 is vertically fixed In the middle of the square steel end plate 2, and the centroid of the cylindrical pin-shaped connecting block-1 and the centroid of the square steel end plate 2 are on the same vertical line. There are 4 hexagonal bolt holes 1 on the square steel end plate 2, the bolt holes 1 are evenly and symmetrica...
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The invention discloses an experimental device for the testing anti-pull connection performance of self-tapping screws, and an implementation mode of the experimental device. The experimental device comprises an upper part connecting component and a lower part connecting component, wherein the upper part connecting component comprises a cylinder pin-shaped connecting block I (1) and a square steel end plate (2), wherein the cylinder pin-shaped connecting block I is vertically fixed at the middle part of the square steel end plate. The lower part connecting component comprises a square upper flat plate (3), a square lower flat plate (4) and a cylinder pin-shaped connecting block II (5), wherein the cylinder pin-shaped connecting block II is vertically fixed at the middle part of the square lower flat plate. The square upper flat plate and the square lower flat plate are respectively provided with an opening, and the cylinder pin-shaped connecting block I and the cylinder pin-shaped connecting block II are respectively provided with a through hole. According to the implementation mode, a cold-formed steel joist and a building board test piece are connected and installed on the experimental device by the self-tapping screws, so that the anti-pull mechanical property of the self-tapping screws can be further tested. The experimental process is simple and convenient, and the convenience is improved.
Description
technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to an experimental device for testing the pull-out resistance performance of a self-tapping screw connector between a cold-formed steel keel and a building plate and an implementation method thereof. Background technique [0002] The application of steel structure is very extensive. Compared with traditional reinforced concrete structures, steel structures have the characteristics of uniform material, good performance, high strength and strength-to-mass ratio, good ductility, and strong earthquake resistance. With the rapid development of the national economy, my country's steel output has already ranked first in the world, far exceeding other countries, and the domestic steel structure industry has also developed rapidly. However, compared with developed countries, the proportion of my country's steel structure buildings in steel production is still significa...
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IPC IPC(8): G01N3/08
Inventor 陈励纬陈伟陈盛根张翼东苏意然叶继红
Owner SOUTHEAST UNIV