Method for evaluating structural surface defects based on energy characteristics
A technology for defect evaluation and energy characteristics, applied in measuring devices, geophysical measurements, instruments, etc., can solve problems such as inaccurate evaluation and lack of quantitative means
Active Publication Date: 2019-03-29
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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[0005] The purpose of the present invention is to solve the problem that the existing geological defect measurement method in the above-mentioned background technology lacks quantitative means and cannot be accurately judged, and provides a structural surface defect evaluation method based on energy characteristics
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[0046] The accompanying drawings and specific embodiments further describe the present invention in detail.
[0047] To detect the separation seam of a high-speed rail track slab structure, the ultrasonic (actually, as long as it is mechanical wave) reflection method is used for detection, and multiple measuring lines are arranged at intervals along the transverse direction of the track, and each measuring line is arranged longitudinally along the track. A survey line includes multiple survey points, such as figure 2 Shown is the measuring point arrangement structure of this embodiment. Measuring points are evenly arranged on each measuring line, and the distance between adjacent measuring points is 0.2m. When each measuring point is used for data acquisition and measurement, a device with an ultrasonic transducer is placed on the measuring point to excite the ultrasonic transducer. The ultrasonic frequency is 30KHz. There are 11 receiving sensors on the device. The interval...
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The invention relates to the technical field of geological detection methods, in particular to a method for evaluating structural surface defects based on energy characteristics. The method comprisesthe following steps of: 1) arranging measuring points along the medium surfaces to be detected or surveyed; 2) acquiring a signal of each measuring point by point-by-point excitation; 3) processing the signal to calculate a direct wave energy value Er and a reflected wave energy value Ed at the measuring point; and 4) calculating an energy coefficient of a medium structural surface at the measuring point according to the following formula, wherein Ce-structural surface energy coefficient, Ed-reflected wave energy value, and Er-direct wave energy value. It is considered that there is no abnormality in the structural surface at the measuring point when the structural surface energy coefficient Ce is less than or equal to a. It is considered that the structural surface at the measuring pointhas defects such as open joints and disengagement when the structural surface energy coefficient Ce is greater than a. According to the method for evaluating structural surface defects based on energycharacteristics, the structural surface condition at the measuring point is quantitatively analyzed, a direct guiding significance is applied to engineering application, and the gap of nondestructivetesting of known structural surface quality is filled.
Description
technical field [0001] The invention relates to the technical field of geological detection methods, in particular to a method for evaluating structural surface defects based on energy characteristics. Background technique [0002] Structural surface detection: In engineering construction, there are usually a large number of fixed structures installed. With the operation and use of the engineering project, the structure will have different deformations, shedding and other diseases, so it is necessary to regularly perform disease detection on the structural surface. The content of structural surface detection mainly includes void detection, deformation detection, etc., and the detection methods mainly use the ground radar method for detection. [0003] The Seismic Reflection Method is a method of artificial seismic exploration using seismic reflection waves. It is the primary means of resource exploration. The exploration results can accurately determine the depth and shape o...
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IPC IPC(8): G01V1/30
CPCG01V1/307G01V2210/63G01V2210/64
Inventor 化希瑞刘铁刘铁华张邦卞友艳林昀韦德江崔德海肖立锋蔡盛赵威雷理卿志杨正国刘伟陈洪杰
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP