Sleeve grouting connection defect detection system

Abstract

The invention discloses a sleeve grouting connection defect detection system. The system comprises a signal transmitting system, a signal receiving system and a data evaluation system, wherein the signal transmitting system comprises finite element analysis software, a driving power supply, a signal transmission line and a piezoelectric intelligent aggregate sensor; the signal receiving system comprises a piezoelectric ceramic piece, a signal transmission line, a power amplifier and an oscilloscope; the data evaluation system comprises a signal transmission line, a waveform analysis end and a data storage end. The system is advantaged in that the limitation of the arrangement form of the sleeve and thickness of the component is overcome, only part of concrete is chiseled without cutting off the stressed steel bars, and the influence on the stress performance of the joint is small; only a single sleeve is detected, projection superposition is avoided, the imaging effect is good, and the recognition degree is high; a waveform analysis end is introduced, waveforms are converted into images, detection results are reflected simply and clearly, and operation of general engineers is facilitated.

Description

technical field [0001] The application relates to the field of prefabricated buildings and the technical field of non-destructive testing, in particular to a detection system for socket grouting connection defects. Background technique [0002] Prefabricated buildings refer to buildings that are processed and manufactured in the factory for building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.), transported to the construction site, and assembled and installed on site through reliable connection methods. The traditional building has the advantages of saving labor force, overcoming the influence of seasons, and being convenient for perennial construction. It is one of the important ways to realize the industrialization of construction. [0003] In the prefabricated concrete structure, the connection node is the key link in the construction quality control. Among the several existing connection methods, the sleeve grouting connection is...

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Problems solved by technology

[0003] In the prefabricated concrete structure, the connection node is the key link in the construction quality control. Among the several existing connection methods, the sleeve grouting connection is the most widely used. The sleeve grouting connection refers to inserting steel bars into prefabricated metal sleeves. Then inject grouting material into the metal sleeve to realize the connection between the steel bars. The reliability of the sleeve grouting connection depends on the bonding strength between the steel bar and the grouting material and between the grouting material and the sleeve. The quality of the grouting directly affects the As far as the quality of the concrete structure is concerned, the traditional detection methods are not satisfactory for the detection of the construction quality of the sleeve, and the portable X-ray, because of the relatively large scale of the building components, the detection effect can only meet the requirements under certain conditions

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