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A detection robot and a method for detecting the pouring quality of steel pipe concrete using the detection robot

A concrete-filled steel tube and robot technology, which is used in measuring devices, processing response signals of detection, and analyzing solids using sonic/ultrasonic/infrasonic waves, which can solve problems such as difficulty in observation and detection.

Active Publication Date: 2020-10-30
HUNAN UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems of difficult observation and detection during the pouring process of steel pipe concrete, and invents a robot that can crawl on steel pipe concrete for detecting void damage of steel pipe concrete

Method used

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  • A detection robot and a method for detecting the pouring quality of steel pipe concrete using the detection robot
  • A detection robot and a method for detecting the pouring quality of steel pipe concrete using the detection robot
  • A detection robot and a method for detecting the pouring quality of steel pipe concrete using the detection robot

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Experimental program
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Effect test

Embodiment

[0046] Use artificial percussion listening method or infrared thermal imaging technology to quickly detect the overall structure of the steel pipe concrete to be detected, and initially determine the area where local void damage may occur;

[0047] Such as Figure 7 As shown in , the surface of the steel shell in the area where local void damage may occur is divided into 10×10 grids with a spacing of 25mm, and the microphones are placed 50mm above the intersection points of each column of grids in turn;

[0048] Tap each grid intersection point in each row and column in turn, pick up the sound pressure signal of the microphone directly above the point, and make a frequency response function with the force signal of the hammer, and extract its frequency response by CMIF method For the first obvious frequency peak, calculate the modal compliance sound pressure form at this order frequency. For the above grid, obtain the modal compliance values ​​at each point, as shown in Table ...

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Abstract

The invention provides a detection robot and a method for detecting the pouring quality of a concrete filled steel tube by using the detection robot. The detection robot comprises a mechanical electromagnetic mixing knocking hammer (1), a microphone (3) and a camera (7), wherein both the mechanical electromagnetic mixing knocking hammer (1) and the microphone (3) are respectively fixed on certainends of a knocking hammer mechanical arm (2) and a microphone mechanical arm (4) on the robot by virtue of an adjustable clamp (5), the other ends of the knocking hammer mechanical arm (2) and the microphone mechanical arm (4) are fixed on a control rotating stack (8) on the robot, the control rotating stack (8) is provided with a foundation support (9), the foundation support (9) is provided witha steering device (10), and the steering device (10) is provided with the camera (7).

Description

technical field [0001] The invention relates to the field of construction engineering, and mainly relates to a detection robot and a method for using the detection robot to detect the pouring quality of steel pipe concrete. Background technique [0002] Concrete-Filled Steel Tube composite structure refers to the composite structure formed by filling concrete in steel pipes. The interaction between steel pipes and concrete during the stress process makes the concrete in a complex stress state, thereby improving the strength of the concrete. Plasticity and toughness are improved. The composite structure of steel tube concrete fully utilizes the advantages of steel and concrete. It has the following advantages: light weight, fatigue resistance, high strength, impact resistance and good ductility in terms of mechanical properties, light erection in terms of construction performance, labor and material saving, and convenient construction. Due to the advantages of fast speed, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04G01N29/46G08C17/02
CPCG01N29/045G01N29/46G01N2291/0231G08C17/02
Inventor 周云刘蒙赵瑜李紫玮秦鹏
Owner HUNAN UNIV
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