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A method for detecting the wall thickness of concrete pumping pipeline

A detection method and a concrete pump technology, which are applied in the field of building construction, can solve problems such as inconvenient on-site practical application, high cost, and inconvenient operation of equipment, and achieve the effects of convenient operation, improved accuracy, and reduced errors

Active Publication Date: 2022-03-15
SHANGHAI CONSTRUCTION GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to be operated in the pipeline, which is not convenient for practical application on site
[0008] It can be seen that the existing methods for detecting the wall thickness of concrete pump pipes either require expensive equipment or are not easy to operate. Therefore, it is urgent to develop a simple and low-cost detection equipment and method.

Method used

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  • A method for detecting the wall thickness of concrete pumping pipeline
  • A method for detecting the wall thickness of concrete pumping pipeline
  • A method for detecting the wall thickness of concrete pumping pipeline

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0057] Such as Figure 1 to Figure 4 As shown, a concrete pumping pipeline wall thickness detection device 100 provided in this embodiment includes a housing 110, an electromagnet support 120, a striking hammer 130, a fixing member 140, a stepping motor 150, a gradient paddle 160 and Sound collection and analysis device 170.

[0058] The electromagnet support 120 is arranged on the bottom of the casing 110, combined with figure 2 and image 3 As shown, four electromagnet supports 120 are disposed on the bottom of the casing 110 . After the electromagnet support 120 is energized, it can generate enough electromagnetic field, so that the detection equipment 100 can be firmly adsorbed on the sampling pump tube 1 or the construction pump tube. After the electromagnet support 120 is powered off, the electromagnetic field disappears, and the detection device can be moved to other positions.

[0059] The striking hammer 130 and the fixing part 140 are arranged in the housing 110...

Embodiment 2

[0065] This embodiment provides a method for detecting the wall thickness of a concrete pumping pipeline, comprising the following steps:

[0066] Step 1. Fix the two ends of the sampling pump tube according to the actual working installation method of the construction pump tube. The sampling pump tube adopts the standard section of the construction pump tube; select the pump tube hitting point on the sampling pump tube and measure the sampling pump tube. Average value of pipe wall thickness f 1 .

[0067] It should be noted that the standard section of the construction pump pipe is used as the sampling pump pipe, so that the material and model of the sampling pump pipe and the construction pump pipe are the same, and the outer diameter of the cross section is the same. The present invention is based on a premise, that is, the wear and tear of the same construction pump pipe standard section is basically the same at different sections, so the thickness of each section of the ...

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Abstract

The invention discloses a method for detecting the wall thickness of a concrete pumping pipeline, which comprises the following steps: step 1, fixing both ends of the sampling pump tube, selecting a pump tube hitting point on the sampling pump tube, and measuring the wall thickness of the sampling pump tube the average value f 1 ; Step 2, hit the sampling pump tube at the hitting point, perform sound collection and analysis, and obtain n N-dimensional sound feature vectors v i 1 ; Step 3, adopt the cold working method of metal material, reduce the average thickness of sampling pump pipe to f 2 , repeat step 2 to obtain n N-dimensional sound feature vectors v i 2 Step 4, repeat step 3, form n × m group of neural network input training data pairs altogether: Step 5, train the neural network model parameters, set up the pump tube sound feature regression calculation formula f=F (θ, v); step 6. Hit the construction pump pipe to obtain the N-dimensional feature vector v x , get the construction pump pipe wall thickness as f x =F(θ,v x ). The method has no damage to the construction pump pipe, is easy to operate, and can greatly improve the detection efficiency.

Description

technical field [0001] The invention relates to a method for detecting the wall thickness of a concrete pumping pipeline, which belongs to the technical field of building construction. Background technique [0002] Building construction often involves pumping concrete, which is transported through metal pipes to where it is needed for subsequent pouring. Due to the friction effect of the aggregate in the concrete on the pump pipe, the wall thickness of the pump pipe gradually becomes thinner with the increase of service time. The wall of the pump pipe that is too weak is easy to burst during the concrete pumping process. Therefore, it is necessary to detect the wall thickness of the concrete pump pipe in the project. [0003] The current techniques for detecting concrete mainly include: [0004] (1) The method of ultrasonic excitation is used to directly act on the outer surface of the pump tube, and the reflected sound signal is used to perform appropriate signal process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B17/02G06N3/04G06N3/08
CPCG01B17/02G06N3/084G06N3/045
Inventor 何光辉况中华李鑫奎
Owner SHANGHAI CONSTRUCTION GROUP