Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method

A technology for bonding properties and concrete specimens, applied in the direction of measuring devices, mechanical devices, instruments, etc., can solve the problems of lack of test devices and centering of test pieces, and achieve convenient operation, solve the problem of centering of test pieces, and simple assembly Effect

Inactive Publication Date: 2016-01-20
THE CITY VOCATIONAL COLLEGE OF JIANGSU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is a lack of a unified test device, and the direct pull-out test between steel bars and concrete needs to solve the problem of test piece alignment

Method used

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  • Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method
  • Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method
  • Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method

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Embodiment Construction

[0021] The technical scheme of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as Figure 1-5 Shown is a pull-out device for measuring the bonding performance of steel bars and concrete of the present invention, the device includes a loading frame, a concrete specimen 5, a steel bar 6, a T-shaped steel tie bar 7, a force sensor 8, and a universal material testing machine 9. Displacement meter 11, static signal test and analysis system 13 and computer 14.

[0023] The loading frame consists of an upper steel plate 1, a lower steel plate 2, a high-strength bolt screw 3 and a high-strength bolt nut 4 connecting the upper steel plate 1 and the lower steel plate 2; the surface of the upper steel plate 1 is provided with a T-shaped chute 15; The T-shaped head is installed in the T-shaped chute 15, and the end of the T-shaped steel bar 7 is connected with the clamp at one end of the universal material testing machi...

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Abstract

The invention discloses a device for testing bond performance of a reinforcing steel bar and concrete through drawing. The device comprises a loading frame, a concrete test sample, a T-shaped steel bracing wire, the reinforcing steel bar, a force sensor, a universal material testing machine, a displacement meter, a static signal test analysis system and a computer, wherein a PVC (polyvinyl chloride) pipe is arranged in the middle positions of the upper part and the lower part of the concrete test sample, the reinforcing steel bar penetrates through the PVC pipe, accordingly, the bonding-slip section of the poured test sample is only located in the middle of the concrete test sample, a T-shaped slide chute and a notch are reserved in steel plates at the upper part and the lower part of the loading frame, size scales are marked, and the loading device is accurately aligned by adjusting the positions of the reinforcing bar and the T-shaped steel bracing wire. The device is simple in structure and convenient to disassemble, few materials and instruments are required, and the device is applicable to scientific research and test of the bond performance of the reinforcing steel bar and the concrete on a construction site.

Description

technical field [0001] The invention relates to a pull-out device for measuring the bonding performance of steel bars and concrete, which belongs to the field of concrete construction. Background technique [0002] The bonding performance between steel bars and concrete is the basis for the joint work of steel bars and concrete components, and it is also the premise for the bearing of reinforced concrete structures. This effect enables stress transfer between steel bars and concrete, so that the reinforcement The working stress necessary to establish the structural load-bearing in the concrete. At present, there is a lack of a unified test device, and the direct pull-out test of steel bars and concrete needs to solve the problem of specimen alignment. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a pull-out test device for measuring the bonding performance of steel bars and concrete in view of the above-mentio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04
Inventor 袁娇娇侯新宇张晓东火映霞
Owner THE CITY VOCATIONAL COLLEGE OF JIANGSU
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