A method for detecting the fullness of sleeve grouting by unilateral ultrasonic method along the grouting channel
A technology of ultrasonic testing and sleeve grouting, which is applied in the direction of using sound waves/ultrasonic waves/infrasonic waves to analyze fluids, etc. It can solve problems such as unsuitable operation, low efficiency, and large concrete range, and achieve fast detection speed and high efficiency.
Active Publication Date: 2019-11-26
KUNSHAN CONSTRUCT ENG QUALITY TESTING CENT +1
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Problems solved by technology
The local damage X-ray detection method is to enable the imaging plate to be placed on the back of the sleeve. The scope of chiseling concrete is large, which is not suitable for on-site operation, and other limitations of the X-ray method still exist; the sleeve surface ultrasonic and sleeve surface excitation methods require Do pre-calibration tests for sleeves of different specifications and models, the efficiency is low, and the influence of human operation factors is greater
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[0045] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0046] figure 1 A schematic diagram of the grouting connection of the steel bar sleeve is given, including the prefabricated component 1, the sleeve 2 embedded in the prefabricated component, the upper and lower ends of the sleeve are respectively inserted into the upper and lower steel bars, and the grout outlet 3 of the sleeve and the prefabricated A grouting channel 5 is provided between the grouting ports 4 on the surface of the component, and a grouting channel 8 is provided between the grouting port 6 of the sleeve and the grouting port 7 on the surface of the prefabricated component. Shrink the grouting material 9, stop the grouting after the undetermined grouting material ...
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Abstract
A method for detecting the grout plumpness of a sleeve cylinder (2) with single-sided ultrasound detection along a grout outlet channel (5), a grout material end surface on the side within the grout outlet channel (5) in proximity to the surface of a prefabricated component (1) is configured as an ultrasound detection surface (10) having a flush surface and perpendicular to the grout outlet channel (5). Detection steps comprise: deploying on the ultrasonic detection surface (10) an ultrasonic transducer (11) capable of exciting an ultrasonic wave and receiving an ultrasonic wave at the same time; when the ultrasound transducer (11) excites the ultrasonic wave, the ultrasonic wave is propagated along the grout outlet channel (5) towards the rear surface of the prefabricated component (1), when the sleeve cylinder (2) is grouted plumply, the ultrasonic wave is reflected on the rear surface of the prefabricated component (1), when the sleeve cylinder (2) is not grouted plumply, the ultrasonic wave is scattered at a grout defective end part (14) on one side within the grout outlet channel (5) in proximity to the sleeve cylinder (2); the ultrasonic transducer (11) receives an echo signal of the ultrasonic wave; and grout plumpness is determined on the basis of whether a significant echo signal is present in the range of an area corresponding to the grout outlet channel (5). This allows lossless, fast, and effective detection of whether the sleeve cylinder (2) is grouted plumply.
Description
technical field [0001] The invention relates to the technical field of prefabricated buildings, in particular to a method for detecting the fullness of sleeve grouting along a grouting channel with a unilateral ultrasonic method. Background technique [0002] Prefabricated buildings refer to the production of some or all of the components and parts of the building in the prefabricated factory, and then transported to the construction site, using reliable connection methods and installation machinery to assemble the components to form a building with design and use functions. Compared with the construction of cast-in-place structures, prefabricated structures have the advantages of convenient construction, fast project progress, little impact on the surrounding environment, and easy guarantee of the quality of building components. Prefabricated structures are widely used in industrial buildings in my country, and have been vigorously promoted and applied in civil buildings, e...
Claims
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IPC IPC(8): G01N29/02
CPCG01N29/02
Inventor 顾盛潘永东童寿兴吴玉龙张军蒋向于
Owner KUNSHAN CONSTRUCT ENG QUALITY TESTING CENT