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One-dimensional coaxial reinforced concrete member measurement equipment and method based on equivalent circuit

A reinforced concrete and equivalent circuit technology, applied in the field of concrete quality monitoring and building material testing

Inactive Publication Date: 2018-07-10
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention is mainly limited to the detection of concrete cracks, and does not detect other abnormal behaviors, so there are limitations

Method used

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  • One-dimensional coaxial reinforced concrete member measurement equipment and method based on equivalent circuit
  • One-dimensional coaxial reinforced concrete member measurement equipment and method based on equivalent circuit
  • One-dimensional coaxial reinforced concrete member measurement equipment and method based on equivalent circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Example 1. See attached figure 1 , 3 .

[0090]The outer conductor of the circular one-dimensional coaxial reinforced concrete member is composed of circular stirrups 2-1-2-n and longitudinal bars 3-1-3-m. The inner conductor 1 is composed of circular stirrup longitudinal bars similar in structure to the outer conductor, but the diameter of the circular stirrup is smaller than that of the outer conductor circular stirrup, and the inner conductor is located at the axial center inside the reinforced concrete member.

[0091] For circular one-dimensional coaxial reinforced concrete, the outer diameter r of the inner conductor is equal to the inner diameter R of the outer conductor divided by 10 to the xth power, that is: r=R / 10 x

[0092] Elliptical one-dimensional reinforced concrete members are similar to circular one-dimensional reinforced concrete members, except that the stirrups are elliptical. For elliptical one-dimensional coaxial reinforced concrete, let the ...

Embodiment 2

[0094] Example 2. See attached figure 2 , 3 .

[0095] For a square one-dimensional coaxial reinforced concrete member, let the side length of the outer conductor be LN, and the side length of the outermost circle of the inner conductor be l; then l is equal to LN divided by 10 to the xth power,

[0096] Namely: l=LN / (10 x ).

[0097] For a rectangular one-dimensional coaxial reinforced concrete member, let the length of the outer conductor be Y, the width be W, the length of the inner conductor be y, and the width be w. Then y is equal to Y divided by 10 to the xth power, and w is equal to W divided by 10 to the xth power

[0098] Namely: y=Y / (10 x ); w=W / (10 x ).

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Abstract

The invention discloses a one-dimensional coaxial reinforced concrete member measuring device and method based on an equivalent circuit. The equivalent circuit measuring equipment and the inner and outer conductors of the measured one-dimensional coaxial reinforced concrete member jointly complete the measurement. Equivalent circuit measurement equipment is composed of control server, microprocessor, signal source, power divider, reverse signal isolator, measurement connection port, directional coupler, program-controlled attenuator, signal resolver, and switch circuit. The two ends are connected to the two ends of the measured one-dimensional coaxial reinforced concrete member. During the measurement, the control process is completed through the control of the microprocessor by the control server, and the equivalent circuit model of the subroutine component is calculated in the parameters of the microprocessor, so that the pathological state of the one-dimensional coaxial reinforced concrete can be estimated and monitored conveniently and accurately. The invention utilizes the concrete material itself as a sensing material, has high automation degree of equivalent circuit model measurement and calculation, simple and reliable operation, and is easy to popularize.

Description

(1) Technical field [0001] The invention belongs to the category of building material detection and relates to concrete quality monitoring, in particular to a one-dimensional coaxial reinforced concrete member measuring device and method based on an equivalent circuit. (2) Background technology [0002] Concrete is the most widely used structural material in civil engineering structures. The damage of concrete structural materials will seriously damage the integrity of the structure, affect the durability of the structure, and even directly endanger the safety of the engineering structure. Therefore, the damage detection or monitoring of concrete materials is very important. An important part of engineering quality inspection and structural health monitoring. Real-time effective detection and real-time monitoring of concrete components, scientifically grasp the dynamic changes in the structural performance of concrete components, and timely take disaster prevention and contr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/00
CPCG01N27/00
Inventor 莫思特杨森李碧雄王熙月苏其瑜柳银张展
Owner SICHUAN UNIV