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Loading device and method for bond slip performance test

A loading device and bond-slip technology, applied in the direction of using mechanical devices, measuring devices, instruments, etc., can solve the problems of reduced loading accuracy, reduced test accuracy of bond-slip performance, and inability to release loading connection bending moment, etc. Achieve the effect of improving accuracy, improving loading efficiency, and enhancing strength

Pending Publication Date: 2018-11-13
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Application Information

AI Technical Summary

Problems solved by technology

The existing test loading devices generally have the problem of not being able to release the bending moment generated during the loading connection, which will lead to a decrease in the accuracy of the bond-slip performance test; and most of the existing loading devices perform indirect loading through the frame of the loading device, and the indirect loading The intermediate loss will reduce the loading accuracy

Method used

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  • Loading device and method for bond slip performance test
  • Loading device and method for bond slip performance test
  • Loading device and method for bond slip performance test

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] refer to Figure 1 to Figure 12 , a loading device for bond-slip performance test of the present invention, comprising: a loading frame, a test piece and a testing machine.

[0044]The loading frame comprises legs, a first support plate 4, a second support plate 10 and a third support plate 13, and the first support plate 4, the second support plate 10 and the third support plate 13 are fixedly arranged on the legs in sequence; The legs are four screw rods 2, and the three support plates are all rectangular steel plates. There are corresponding coaxial threaded mounting holes near the four corners of the three support plates. For fixed connection, the screw rod 2 is used as the leg to adjust the distance between the first support plate 4 and the second support plate 10 according to the length of the test piece, which is conven...

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Abstract

The invention discloses a loading device and method for bond slip performance test. The loading device comprises a loading frame comprising support legs, a first support plate, a second support plateand a third support plate, wherein the first support plate, the second support plate and the third support plate are fixedly arranged on the support legs in sequence and are provided with coaxial mounting through holes; a penetrating ball hinge is fixedly arranged on the first support plate, and a center hole of the penetrating ball hinge is coaxial with the mounting through hole in the first support plate; a ball-hinge connecting rod with a ball hinge is installed in the mounting through hole in the third support plate, and the third support plate can be connected with a chuck of a testing machine through the ball-hinge connecting rod. The loading device can enhance the accuracy of bond slip performance test by bending moment release during self alignment.

Description

technical field [0001] The invention belongs to the technical field of civil engineering or the technical field of test and research on bond-slip performance of steel bars and concrete, and in particular relates to a loading device and method for test of bond-slip performance. Background technique [0002] Reinforcement and concrete structures can work together and give full play to the advantages of their respective materials. The key is to rely on the bond between the rebar and concrete. In practice, the method of measuring the bond between the rebar and concrete generally adopts the "Concrete Structure Test Method Standard" Cubic center pull-out specimens are recommended in . [0003] For the existing testing machine fixtures, it is often necessary to use a test loading device to meet the requirements of the testing machine to clamp the specimen. Usually, a steel bar is embedded in the center of the concrete, and a load is applied to one end of the steel bar to measure th...

Claims

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Application Information

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IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 曾珂李睿毛满邓珍强卢燕燕周振海徐超岳炜焱
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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