Intelligent grouting bush and saturation and damage position detection device and method thereof

Abstract

The invention provides an intelligent grouting bush and a saturation and damage position detection device and method thereof. The intelligent grouting bush comprises a bush body, sealing rings arranged at openings in the two ends of the bush body and at least three conducting sheets arranged in the inner cavity of the bush body, wherein two conducting sheets are located at the two ends of the inner cavity of the bush body respectively, and the other conducting sheets are arranged at intervals in the axis direction of the bush body. According to the invention, the conducting sheets are connected in series with the power supply and the universal meter to form the detection device, so that the resistance of the grouting material can be detected by using the formed conductive loop after the conductive grouting material is injected, and the saturation and unsaturated positions of the grouting material can be detected according to the resistance values of different positions; in the long-term service process of the anchoring body in the grouting bush, the resistance of the anchoring body at different positions is detected, and the damage position of the anchoring body can be effectively judged; and the detection device provided by the invention is simple in structure, the detection method is simple, convenient and feasible, and the application value is relatively high.

Description

technical field [0001] The invention relates to the technical field of grouting sleeve detection, in particular to an intelligent grouting sleeve and a device and method for detecting its saturation and damage position. Background technique [0002] Prefabricated buildings refer to buildings that are prefabricated in factories and spliced ​​and integrated on site. It is one of the important realization forms of building industrialization. Since the components used in prefabricated buildings are mainly prefabricated by factories, which reduces on-site construction operations, they have the characteristics of stable component quality, energy saving and environmental protection, fast construction speed, little impact on climate, and reduced labor demand. At present, prefabricated buildings are mainly connected to each other in the form of grouting sleeves, and the sleeve grouting has fewer restrictions and higher reliability. However, when there are problems such as improper o...

AI Technical Summary

Problems solved by technology

[0005] However, due to the poor electrical conductivity of cement paste, it has a certain resistance value, and the dispersion of particles inside the paste is not uniform. Therefore, the resistance value at the same position may vary due to the local density of the paste that the electrode contacts. Changes, the above patents test the metal detection wire or probe into the inner cavity of the grouting sleeve to test the local resistance value, which is easily affected by the local density of the slurry, resulting in inaccurate test results

At the same time, according to Ohm's law and the law of resistivity, the size of the resistance value is related to the contact area and length of the object to be measured. The contact area between the metal detection line and the probe provided by the above-mentioned patent and the grouting material is small, and it is difficult to fully and effectively respond The real resistance value change of the grout

In addition, the method provided by the above-mentioned patent is not suitable for accurate judgment of the damage location of the anchor during long-term service, and has great application limitations

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