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System and method for detecting void mass energy of thick steel shell concrete

A technology for concrete and concrete structures, which is applied in the processing of detection response signals, the generation of ultrasonic/sonic/infrasonic waves, and the analysis of solids using sonic/ultrasonic/infrasonic waves, which can solve the problems of poor applicability and low detection accuracy.

Active Publication Date: 2021-06-11
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a system and method for detecting void quality and energy of thick steel shell concrete, which solves the problems of poor applicability and low detection accuracy of conventional void detection methods

Method used

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  • System and method for detecting void mass energy of thick steel shell concrete
  • System and method for detecting void mass energy of thick steel shell concrete
  • System and method for detecting void mass energy of thick steel shell concrete

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Embodiment 1

[0073] Such as figure 1 As shown, the present invention provides a hollow quality and energy detection system for thick steel shell concrete, including a grid division module, a data acquisition module, a filter module, a normalization module, a quality and energy analysis module and a display module; grid division The module is used to divide the thick steel shell concrete into grids to determine the detection area; the data acquisition module is used to use the percussion hammer to apply impact loads on the detection area to excite elastic vibration waves, and according to the excited elastic vibration waves, use The sensor obtains the free vibration wave of the steel plate surface in the detection area; the filter module is used to decompose and filter the free vibration wave of the steel plate surface to eliminate noise; the normalization module is used to normalize the automatic vibration wave after noise elimination processing to obtain the normalized free vibration wave...

Embodiment 2

[0077] Such as figure 2 As shown, the present invention provides a method for detecting void mass and energy of thick steel shell concrete, and its implementation method is as follows:

[0078] S1. Mesh division of thick steel shell concrete to determine the detection area;

[0079] In this embodiment, since the void area and void height are detected by different detection devices, the coverage areas of the two detection devices are different, and the divided grids provide standards for the detection areas of the two devices, realizing the full detection of the detection areas. Covering; after the steel shell concrete is divided into grids, statistics and analysis can be carried out according to the void situation in different grids, providing detailed data support for improving the quality of steel shell concrete pouring.

[0080] S2. Using a percussion hammer to apply an impact load on the detection area to excite an elastic vibration wave, and according to the excited ela...

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Abstract

The invention provides a system and a method for detecting void mass energy of thick steel shell concrete and belongs to the technical field of concrete void detection. The system comprises a grid division module which is used for performing grid division on thick steel shell concrete and determining a detection area; a data acquisition module which is used for applying an impact load on the detection area by utilizing a knocking hammer, exciting elastic vibration waves and acquiring free vibration waves on the surface of the steel plate in the detection area by utilizing a sensor; a filtering module which is used for decomposing and filtering free vibration waves on the surface of the steel plate and eliminating noise; a normalization module which is used for carrying out normalization processing on the automatic vibration waves after noise elimination; a mass-energy analysis module which is used for establishing a relationship between mass-energy strength and a thick steel shell concrete void index according to the normalized free vibration wave; and a display module which is used for displaying the relationship between the mass energy strength and the thick steel shell concrete void index. The system is advantaged in that problems that a conventional void detection method is poor in applicability and low in detection precision are solved.

Description

technical field [0001] The invention belongs to the technical field of concrete void detection, and in particular relates to a void quality and energy detection system and method for thick steel shell concrete. Background technique [0002] Non-destructive testing is an important guarantee to ensure the high-quality construction and long-term operation safety of steel shell concrete. Steel shell concrete is a composite structure of steel plate and concrete, so the tightness of the combination of the two materials is directly related to the bearing capacity and durability of the structure. [0003] Japanese researchers have conducted a large number of experimental studies on the detection of the pouring quality of steel shell concrete. Due to the existence of the steel shell, various electromagnetic wave detection methods cannot be applied. At present, elastic wave and ray detection methods are mainly used. Elastic wave detection methods mainly include sounding method, ultra...

Claims

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Application Information

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IPC IPC(8): G01N29/04G01N29/34G01N29/44
CPCG01N29/04G01N29/34G01N29/44G01N2291/0232
Inventor 李松辉王康臣张龑宋神友刘静金文良席俊杰刘瑞强彭英俊白冰
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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