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Concrete embedded crack monitoring sensor and monitoring method

A technology for monitoring sensors and concrete, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of large errors in manual inspection methods, high detection time costs, and no way to repair, etc., to increase transmission paths and improve monitoring effect, the effect of increasing coverage

Pending Publication Date: 2021-09-03
DESIGN INST NO 9 MINISTRY OF MECHINE BUILDING
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AI Technical Summary

Problems solved by technology

[0003] The existing monitoring methods for concrete cracks generally use acoustic emission sensors or manual inspection of concrete, the efficiency of embedded sensors is low, and there is no way to repair; manual inspection methods have large errors, and it is not easy to find many problems;
[0004] On the one hand, the cost of using ultrasonic waves to detect internal cracks in concrete is very high;

Method used

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  • Concrete embedded crack monitoring sensor and monitoring method
  • Concrete embedded crack monitoring sensor and monitoring method
  • Concrete embedded crack monitoring sensor and monitoring method

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Such as Figure 1-3 As shown, a concrete embedded crack monitoring sensor system includes an array of ultrasonic probes, an embedded standard block 2, a vibration sensor, an analysis host and a power supply module;

[0042]On the upper and lower surfaces of the concrete to be monitored, installation holes for installing the ultrasonic probe array are respectively set. The number of installation holes is 9 on the upper surface of the concrete to be monitored and 9 on the lower surface, all arranged in a 3×3 array; 4 are set near the four corners of the top or bottom of the concrete, 4 are set near the midpoint of the edge of the top or bottom, and 1 is set at the center of the top or bottom;

[0043] The installation hole is used to install the ultrasonic probe 1, the ultrasonic probe 1 is a transceiving probe, which can both emit ultrasonic waves and collect ultrasonic waves, and the ultrasonic probe 1 is connected to the analysis host;

[0044] Embed the embedded stan...

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Abstract

The invention relates to the technical field of engineering detection, in particular to a concrete embedded crack monitoring sensor and a monitoring method. By using an array ultrasonic probe mode, the coverage range of the ultrasonic probe is enlarged, and meanwhile, the crack detection precision of the ultrasonic probe is improved; on the other hand, a built-in standard block is arranged, so that the propagation path of ultrasonic waves in the concrete is increased, and the monitoring effect is improved; furthermore, the humidity in the concrete is detected through the wave velocity of the standard block, and concrete maintenance is facilitated; and in addition, only two vibration sensors are embedded in the embedded equipment, the cost is reduced, other equipment can be reused, the arrangement mode is very suitable for monitoring large-range concrete, devices such as the ultrasonic probe and the like can be detached after detection is completed, and concrete monitoring can be achieved only through regular detection.

Description

technical field [0001] The invention relates to the technical field of engineering detection, in particular to a monitoring sensor and a monitoring method for embedded cracks in concrete. Background technique [0002] In civil construction engineering, concrete structures dominate, and cracks inevitably exist in concrete structures due to internal and external factors, and cracks are the main reason for the reduction of bearing capacity, durability and waterproofness of concrete structures. [0003] The existing monitoring methods for concrete cracks generally use acoustic emission sensors or manual inspection of concrete, the efficiency of embedded sensors is low, and there is no way to repair; manual inspection methods have large errors, and it is not easy to find many problems; [0004] On the one hand, the cost of using ultrasonic waves to detect internal cracks in concrete is very high; [0005] In addition, it is safe to prevent problems before they happen. It is diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/07G01N29/22G01N29/24G01N29/34
CPCG01N29/07G01N29/22G01N29/24G01N29/34G01N2291/011G01N2291/0232G01N2291/02845
Inventor 王大义
Owner DESIGN INST NO 9 MINISTRY OF MECHINE BUILDING
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