Concrete construction nondestructive testing method based on geomagnetic pulsation technology

Abstract

The invention discloses a concrete construction nondestructive testing method based on a geomagnetic pulsation technology. The concrete construction nondestructive testing method is characterized by comprising the following steps of: (1) arranging a pulsation signal detecting and processing system; (2) mounting a three-way pulsation sensor at one part with a good lining integrity; transmitting a collected pulsation signal to a data analysis processor by a pulsation signal demodulator; and using the received data as a reference data by using the data analysis processor; and (3) mounting a three-way pulsation senor at one part needing to be detected; transmitting a collected pulsation data to a data analysis processor by a pulsation signal demodulator; comparing and analyzing the received data and the reference data by using the data analysis processor; and judging the lining integrity according to a result. The concrete construction nondestructive testing method disclosed by the invention has the advantages of high accuracy of the collected signal, capability of collecting the three-way pulsation signal, no need of providing seismic source by using a natural oscillation pulsation signal of the lining as well as capability of being widely applied to health detection of concrete constructions, such as tunnels, water and electricity, slope protection and the like.

Description

technical field [0001] The invention relates to a diagnosis (detection) method applied to the health state of concrete structures, in particular to a detection method based on constant micro-motion technology mainly used to detect the health state of concrete structures. Background technique [0002] At present, there are many methods applied to the diagnosis of concrete health state at home and abroad, but there is no report on the technology of concrete health state diagnosis based on constant fretting technology. [0003] 70% of my country's land is mountainous and hilly areas. With the development of highway transportation, the application of tunnels is becoming more and more extensive, and the construction scale is getting larger and larger. For a long time in the past, due to the constraints of economic conditions and geological exploration level at that time, as well as the limitations of tunnel design and construction technology, after many years of operation, the tu...

AI Technical Summary

Problems solved by technology

The rebound method is the most commonly used non-destructive testing method, but the rebound method can only measure the quality of the concrete surface, but its internal quality information cannot be known

The radar method can accurately locate the internal defects of concrete, but it is easily disturbed by the external environment (such as metal pipe fittings, vehicles, etc.), and is greatly affected by the low-resistance shielding of steel bars, and its practical application is subject to certain restrictions.

The impact echo method can measure the internal defects of concrete and the thickness of concrete components, but it is difficult to distinguish the lower interface of the small longitudinal defects in the concrete

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