Grouting fullness detection method and system based on sleeve surface excitation

Abstract

The invention proposes a grouting fullness detection method and detection system based on sleeve surface excitation. The detection method includes the following steps: reserve an inspection opening on the prefabricated component or remove the concrete protective layer to form an inspection opening, and the inspection opening can expose the grouting The outer surface of the sleeve; an acceleration sensor and a vibrator are arranged on the outer surface of the grouting sleeve, and the acceleration sensor is connected to the signal acquisition and analysis device; the vibrator is started for instantaneous excitation, and the grouting sleeve is collected The acceleration response data of the outer surface of the cylinder; through the analysis of the acceleration response data, the defects of grouting inside the grouting sleeve are judged. The detection method of the present invention avoids the interference of the concrete protective layer on the test signal by setting an inspection port, greatly improves the detection accuracy, has simple operation steps, has good applicability, and has intuitive detection results and high reliability.

Description

technical field [0001] The invention relates to the technical field of prefabricated buildings, in particular to a method and a system for detecting the fullness of grouting based on the excitation of the surface of a sleeve. Background technique [0002] For a long time, my country's construction industry has mainly adopted the cast-in-place construction method. From erecting scaffolding, setting up formwork, binding steel bars to pouring concrete, most of the work is done at the construction site, which is labor-intensive, chaotic at the construction site, and consumes a lot of building materials. There is a lot of construction waste generated on site, which has a great impact on the surrounding environment. As labor costs continue to rise, on-site construction production methods based on low labor prices are increasingly being challenged, and prefabricated construction methods have attracted more and more attention from the industry. [0003] Sleeve grouting connection is...

AI Technical Summary

Problems solved by technology

When the size of the component is appropriate and the grouting sleeves are arranged in a single row or in a plum blossom shape, the detection effect of the X-ray method is better. Because of its radioactivity, there are certain restrictions on its use on the construction site

Due to the complexity of the detection object, it is very difficult to detect grouting defects inside the grouting sleeve on the concrete surface using non-destructive testing methods such as ultrasonic waves and shock elastic waves.

[0007] The local damage detection method is usually to drill the core of the grouting sleeve suspected to have internal defects, directly cut off the grouting sleeve, and check the internal defects. Rarely used, destructive testing is considered only when project quality is in dispute and no other effective method is available

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