A three-dimensional visual detection method and device for sleeve grouting compactness

Abstract

The invention discloses a three-dimensional visual detection method and device for sleeve grouting compactness. Using ultrasonic measurement and CT technology, an ultrasonic transmitting matrix board and an ultrasonic receiving matrix board are respectively arranged on both sides of a concrete structure to be tested, so that the transmitting The transducer and the receiving transducer are facing one by one, realizing the detection of multiple transmissions and multiple receptions in the matrix type. During the detection process, the ultrasonic transducer does not need to be frequently moved, which greatly improves the detection efficiency. This method can form a very intuitive three-dimensional image of the density of the grouting sleeve, which greatly improves the accuracy and readability of the test results.

Description

technical field [0001] The invention belongs to the technical field of building quality inspection, and more specifically relates to a method and device for detecting the compactness of sleeve grouting based on ultrasonic CT technology and utilizing ultrasonic transducers arranged in a matrix. Background technique [0002] Prefabricated concrete structures have been rapidly promoted and used in China in recent years because of their high degree of industrialization, high reliability of construction quality, high construction efficiency, energy saving and environmental protection. The "Guiding Opinions of the General Office of the State Council on Vigorously Developing Prefabricated Buildings" ((2016) No. 71) puts forward the work objectives: the three major urban agglomerations of Beijing-Tianjin-Hebei, the Yangtze River Delta, and the Pearl River Delta are the focus of promoting the development of prefabricated concrete structures The rest of the cities are actively promoti...

AI Technical Summary

Problems solved by technology

In particular, ultrasonic tomography (CT) technology, which uses the multi-angle measurement and oblique side of the ultrasonic transmitting transducer and receiving transducer on the same section, can realize the quantitative determination of the size, shape and position of the section defect , which improves the imaging accuracy and visualization of ultrasonic nondestructive testing, but the traditional ultrasonic CT scanning technology is a two-dimensional cross-sectional scanning imaging, which cannot fully show the overall shape of the sleeve in the form of a three-dimensional cylinder. The density of the grout

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