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Neutron transmission imaging system for prefabricated wall detection and application thereof

An imaging system and prefabricated technology, applied in the direction of material analysis using wave/particle radiation, material analysis using radiation, measuring devices, etc., can solve the problems of insufficient equipment for detecting the connection quality of prefabricated buildings, and achieve good applicability , high work efficiency and high reliability

Pending Publication Date: 2021-02-09
ANHUI URBAN CONSTR DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a neutron transmission imaging system for prefabricated wall detection and its application, so as to solve the deficiencies in the equipment for detecting the connection quality of prefabricated buildings in the prior art technical problem

Method used

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  • Neutron transmission imaging system for prefabricated wall detection and application thereof
  • Neutron transmission imaging system for prefabricated wall detection and application thereof
  • Neutron transmission imaging system for prefabricated wall detection and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] combine figure 1 , this embodiment provides a neutron transmission imaging system for prefabricated wall detection, including a neutron transmitter assembly 1 for emitting fast neutrons arranged on both sides of the prefabricated wall to be detected and a neutron transmitter assembly for The neutron receiver assembly 2 for receiving thermal neutrons, the neutron transmitter assembly 1 and the neutron receiver assembly 2 are respectively fixedly installed on a vertical wall parallel to the vertical surface where the assembled wall to be detected is located. On the first driving device 3 and the second driving device 4 moving in a two-dimensional plane, the neutron transmitter assembly 1 is connected to the first driving device 3, and the neutron receiver assembly 2 is connected to the second driving device 4 connected, and the first driving device 3 and the second driving device 4 are connected to the main control device 5 respectively.

[0045] working principle:

[0...

Embodiment 2

[0057] This embodiment provides a method for detecting the saturation of sleeve grouting in the wall of a prefabricated building by using the above-mentioned equipment, specifically:

[0058]First, the first driving device 3 and the second driving device 4 are respectively installed on both sides of the wall of the prefabricated building to be detected, and the neutron transmitter assembly 1 and the neutron receiver assembly 2 are relative to the wall of the prefabricated building to be detected The center is symmetrically arranged, and the two are synchronously moved under the respective control of the main control device 5 via the first drive device 3 and the second drive device 4, and then the following steps are performed:

[0059] S1. Determine the following parameters and input them into the main control device 5: Delineate the detection area S, the wall thickness d of the prefabricated building to be detected, the depth h of the sleeve in the detection area, the outer di...

Embodiment 3

[0071] Adopt above-mentioned apparatus and method to carry out following experiment:

[0072] 1) use the equipment shown in embodiment 1 to such as image 3 The shown base plate and body of wall adopt the method shown in embodiment 2 to detect its connection quality, specifically:

[0073] 2) The wall thickness d is 200mm. Use equipment to calibrate and sample various parts of the wall sample plate with a thickness of 200mm, including the area A1 without any internal structure, and the area A2 containing standard sleeves, steel bars but no slurry, including standard sleeves, steel bars and slurry. area A3 of the body. Form a calibration image P A1 ( Figure 4 ), P A2 ( Figure 5 ), P A3 ( Figure 6 ).

[0074] 3) As an implementation case, select image 3 One of the connecting sleeves defines the detection area and divides the area 1 into an equally divided grid of N columns and M rows. Using a dedicated automated neutron scattering scanning imaging equipment, accor...

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Abstract

The invention discloses a neutron transmission imaging system for fabricated wall detection and an application thereof, and relates to the technical field of nondestructive testing. The system comprises a neutron transmitter assembly for transmitting fast neutrons and a neutron receiver assembly for receiving thermal neutrons, which are arranged at two sides of a detected fabricated wall. The neutron transmitter assembly and the neutron receiver assembly are fixedly installed on a first driving device and a second driving device respectively, the first driving device and the second driving device can drive the neutron transmitter assembly and the neutron receiver assembly to move on a vertical plane parallel to the vertical plane where a detected fabricated wall is located, and then two-dimensional planar motion is achieved. The neutron receiver assembly is connected with the second driving device, and the first driving device and the second driving device are connected with the main control device. Meanwhile, the invention further provides a detection method using the technology. According to the invention, the connection quality in the building wall can be effectively detected, and the reliability is high.

Description

technical field [0001] The invention relates to the field of non-destructive testing, in particular to a neutron transmission imaging system for testing prefabricated building walls. Background technique [0002] The quality of the connection between the prefabricated concrete wall structure and its walls, such as the sleeve connection and the grout anchor connection, the grout saturation directly affects the safety of the structure. At present, there is a lack of effective detection methods for the quality of the joints of prefabricated concrete structures. In recent years, more and more attention has been paid to the detection method of the grouting fullness of the sleeve connection joint of the prefabricated concrete structure. Various methods and patents emerge in endlessly, but there is still no reliable and effective detection method. There are also problems within the wall structure itself, such as lack of reinforcement, voids, and substandard concrete grades. [00...

Claims

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Application Information

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IPC IPC(8): G01N23/05G01N23/02
CPCG01N23/025G01N23/05
Inventor 廖旭涛吴东彪孟玉曹光暄徐文华万富李天宝
Owner ANHUI URBAN CONSTR DESIGN & RES INST
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