Defect and void detection device for steel-concrete structures

GT-SSDT steel-concrete structure defect void detector

1、 Core functions

Product Features:Concrete void detection and internal defect detection.

All-scenario application：Pipe gallery, caisson, steel tube concrete arch bridge, steel tube concrete column beam, steel tube bundle concrete structureStructures such as prefabricated steel structures and pressure steel pipes

Intelligent Analysis：single/Dual channel signal acquisition, supporting spectrum analysis and intelligent discrimination of defect types.

2、 Technical advantages

High precision analysis method:Vibration method, impact signal characteristic method, comprehensive iteration of travel time imaging signal amplitude

High precision imported componentsImported core components from Europe and America, with good repeatability and accurate structure.

Intelligent software supportContour lines, color map imaging, elastic wave radar scanning, fast planar imaging, layered slicingProcessing technology, waveform signal stepless scaling, wave velocity tomography, energy tomography, and comprehensive imaging.

sampling precision24 digits.

sampling frequency: Not less than1000KHzAnd adjustable.

Signal input modeDual channel supports both IEPE and DC, and can be used simultaneously.

3、 Detection principle

1Signal feature method

Defect and void detection device for steel-concrete structuresCausing vibration on the surface of the structure through impact; Whether the structure is hollow or not, the phase of the structural vibration signalThe characteristic information such as position, amplitude, and frequency will change, and based on this series of features, the steel structure andIs there any void on the contact surface of concrete.

2Comprehensive iteration of imaging signal amplitude during travel time

This method uses shock elastic waves as the medium, with wave velocity and signal amplitude as the calculation basis, and uses cross validationThe survey line performs structural scanning on the inspected object, and through inversion and reconstruction of the collected data, obtains a true reflectionThe distribution image of the internal situation of the structure achieves the purpose of detecting the internal quality of the structure.

4、 Application scenarios

1. Defect detection of a series of concrete structures such as floor slabs, tunnel lining, beams and slabs, retaining walls, and dam bodies;

2. ArchitectureConstruction and maintenance of highway and railway bridges.

5、 Standard support

（1）Technical Specification for Defect Detection of Hydraulic Concrete Structures（SL 713-2015）；

（2）Technical Condition Evaluation Standards for Highway Bridges（JTG/T H21-2011）；

（3）Inspection and Evaluation Regulations for Steel Tube Concrete Bridges（DB51/T 2425-2017）；

（4）Technical specification for detecting concrete defects by impact echo method（JGJ/T 411-2017）；

（5）Technical Specification for Testing Concrete Defects by Shock Elastic Wave Method（T/CECS 925-2021）.