Detection method of wall deformation

Abstract

The present invention provides a detection method of wall deformation. Infrared thermal imagers are taken as tools, three modes of separation are performed at a wall area, the infrared thermal imagerswith different inclinations are employed to perform imaging of the surface of the wall at the separation positions to effectively enhance trace deformation and distortion information on the wall andreject error information, materials being the same as the materials of the wall are employed to prepare a reference block, critical corrosion damaging is performed in the reference block as comparisonfor information feedback so as to present shape change in a wall structure in different visual angles and achieve safety early warning of building bodies. The detection method of wall deformation performs detection analysis of the trace deformation information on the wall and outputs hidden dangers of the buildings rapidly and flexibly and solves a problem of difficulties in early warning throughenhancing hidden risks of structural deformation of wall structures of large scale buildings.

Description

technical field [0001] The invention relates to safety detection technology in the field of construction engineering, in particular to a detection method for wall deformation. Background technique [0002] With the development of industrial and civil construction, various complex and large-scale engineering buildings are increasing, and many large-scale engineering buildings in cities (such as large reservoir dams, large office buildings, expressway flyovers and multi-storey buildings in urban areas) Overpasses, etc.) During the construction process, there are strict national standards for quality control, and before these buildings are put into use, strict quality inspections will be carried out on them, and they can only be put into use after passing the test. However, after being put into use for a certain number of years, since the main structure of the building is affected by non-human destructive factors such as natural disasters, sudden changes in external forces, and...

AI Technical Summary

Problems solved by technology

[0003] At present, the deformation detection of building walls mainly relies on post-construction inspections and regular inspections. The inspection methods are mainly visual inspection and other manual measurement methods relying on tools. It mainly relies on personal experience and is greatly affected by personal subjective factors. Even if the appraiser has a high level of professional skills, judgment errors may occur. To improve the accuracy, it is necessary to use other auxiliary tools for detection. Tools usually need to open holes to extend sensors or probes into the wall, and find specific damage points through in-depth inspections, which will cause damage to the building wall structure to a certain extent, and at the same time provide continuity, usability, and reliability. However, ultrasonic testing, as a commonly used non-destructive testing method, is more demanding on the surface flatness of the test area, and because the surface of the damaged part of the wall is often relatively loose, it is difficult for the detection wave Prone to attenuation and therefore less suitable for detection on damaged building wall surfaces

There is also a thermal imager for wall deformation detection. This method uses the thermal radiation and heat conduction performance of the sun after the wall is irradiated, so that the temperature distribution at the deformation defect of the wall is significantly different from the temperature distribution at the non-damaged part. In order to determine the quality of the wall, it has the advantages of non-contact detection, convenience and quickness, but the infrared detection in the prior art is imaged by large-area scanning detection, and there are still defects such as large measurement errors and unsatisfactory measurement accuracy. , it is necessary to further improve the detection method

Images