CN110672663A - Method for detecting sleeve grouting defects based on temperature field change - Google Patents
Method for detecting sleeve grouting defects based on temperature field change Download PDFInfo
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- CN110672663A CN110672663A CN201910997441.6A CN201910997441A CN110672663A CN 110672663 A CN110672663 A CN 110672663A CN 201910997441 A CN201910997441 A CN 201910997441A CN 110672663 A CN110672663 A CN 110672663A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
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Abstract
The invention discloses a method for detecting sleeve grouting defects based on temperature field change, and belongs to the technical field of sleeve grouting compactness detection. Firstly, grouting the sleeve, and then contacting the surface of the sleeve by adopting a medium with a temperature difference with the sleeve to enable the sleeve to form a temperature field with the temperature difference with the medium; then shooting by an imager to obtain a sleeve temperature field image; when sleeve grout had the unconcentration defect, the colour at unconcentration position was distinguished from the colour at closely knit position, realized the detection of the unconcentration defect of grout. Compared with the ray detection and the ultrasonic detection which are nondestructive detection, the method is safer, and the used equipment has no radiation and is more portable. The method is simple to operate, and can simultaneously obtain multiple information about the size and the position of the grouting hole.
Description
Technical Field
The invention belongs to the technical field of sleeve grouting compactness detection, and particularly relates to a method for detecting sleeve grouting defects based on temperature field change.
Background
In the construction process of the assembly type building, the building structural members need to be connected through the sleeves, high-pressure grouting is generally carried out on the joints, so that the sleeves and the basic structural members can be completely connected, the integral stress of the members can be ensured in daily life or earthquake, and the members cannot be loosened or separated from the sleeves. The key point of ensuring the stress lies in whether the grouting slurry connected with the sleeve and the component is compact or not, whether the gap between the sleeve and the component is completely filled, namely whether the filling compactness is 100% or not. The detection of compactness is an important and critical point for realizing the quality of grouting operation, and the conventional methods comprise detection based on ultrasonic waves, detection based on radioactive rays, broken surface inspection and the like, which have defects in different degrees. Finding an economical, safe and reliable grouting compactness detection method becomes an important work for popularization and implementation of the fabricated building.
Disclosure of Invention
The invention aims to provide a sleeve grouting defect detection method based on temperature field change, and solves the problems that in sleeve grouting compactness detection, nondestructive detection equipment is radiated and inconvenient to carry, and the detection process is unsafe and complex to operate.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a method for detecting grouting defects of a sleeve based on temperature field change comprises the steps of performing grouting operation on the sleeve, contacting the surface of the sleeve by adopting a medium with a temperature difference with the sleeve to enable the sleeve to form a temperature field with the temperature difference with the medium, and shooting by using an imager to obtain a sleeve temperature field image; when sleeve grout had the unconcentration defect, the colour at unconcentration position was distinguished from the colour at closely knit position, realized the detection of the unconcentration defect of grout.
The sleeve grouting defect detection method based on temperature field change comprises the following steps:
(1) the basic structural members of the building are connected through sleeves, and grouting equipment is adopted to perform grouting operation on the sleeves after connection is completed;
(2) after grouting is finished, adopting a medium with temperature difference with the sleeve to contact the surface of the sleeve, so that the sleeve forms a temperature field with the temperature difference with the medium; the using amount of the medium is based on the condition that a uniform temperature field with temperature difference is ensured to be formed when the medium covers the surface of the sleeve and is in contact with the sleeve; the medium is gas or liquid, and the temperature difference is 10-100 ℃;
(3) immediately adopting an imager to carry out imaging observation on the surface of the sleeve;
(4) when the sleeve is not tightly grouted, the non-tight part inside the sleeve can be displayed on the imager in a color different from the surrounding area; when the sleeve grouting does not have the non-compact condition, the image color on the imager does not have the difference.
According to the method for detecting the grouting defect of the sleeve based on the temperature field change, the sleeve is a metal sleeve.
According to the method for detecting the grouting defect of the sleeve based on the temperature field change, the sleeve is a cross sleeve, a T-shaped sleeve or a sleeve with a straight-line structure.
According to the method for detecting the sleeve grouting defect based on the temperature field change, the imager is an infrared thermal imager.
According to the method for detecting the sleeve grouting defect based on the temperature field change, the medium is water, nitrogen or Freon.
According to the method for detecting the sleeve grouting defect based on the temperature field change, the basic building structural member is a beam, a column, a wall or a floor slab.
Has the advantages that: compared with the prior art, the invention has the advantages that:
(1) the invention adopts nondestructive detection technology, and can obtain the defect condition inside the sleeve without damaging or destroying the sleeve.
(2) Compared with the ray detection and the ultrasonic detection which are nondestructive detection, the method is safer, and the used equipment has no radiation and is more portable.
(3) The operation is simple, and multiple information about the size and the position of the grouting hole can be obtained simultaneously.
Drawings
FIG. 1 is a schematic view of a beam-column joint sleeve connection in an assembled configuration;
FIG. 2 is a perspective view of a sleeve connection and grouting operation;
FIG. 3 is a diagram illustrating a process of spraying high-temperature or low-temperature steam on the surface of the sleeve;
FIG. 4 is a view showing the thermal imaging process of the metal sleeve member sprayed with high-temperature or low-temperature water vapor.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with examples are described in detail below.
Example 1
A method for detecting sleeve grouting defects based on temperature field changes comprises the following steps that 4 precast concrete columns 1 are connected through metal sleeves 2 to form an assembled structure (shown in figure 1); grouting operation is carried out on the assembled structure at room temperature by adopting grouting equipment 3 (figure 2); and (5) detecting the grouting non-compaction defect after grouting is finished. When the construction engineering operation is in winter, namely the environmental temperature is lower, a high-temperature medium is suitable for being adopted in the detection process, such as high-temperature steam, and the difference value between the temperature of the high-temperature steam and the temperature of the metal sleeve is 100 ℃; the fabricated structure of fig. 1 is sprayed with high temperature steam using a spraying device 4 in an amount to cover the sleeve surface to form a uniform higher temperature field than the environment. The spraying equipment 4 can be a spraying pot which can uniformly spray high-temperature water vapor; and then immediately carrying out thermal imaging observation on the metal sleeve part by using an infrared thermal imaging instrument 5 (Xinstet Hti, HT-19), wherein a grouting result inside the metal sleeve can be presented on a screen 6 of the thermal imaging instrument (figure 4), and an uncompacted part 7 inside the sleeve can be displayed on the imaging instrument in a color which is obviously different from a surrounding area, so that information about the size and the position of a grouting hole can be obtained, and the subsequent further work on the uncompacted part is facilitated.
Example 2
A method for detecting sleeve grouting defects based on temperature field changes comprises the following steps that 4 precast concrete columns 1 are connected through metal sleeves 2 to form an assembled structure (shown in figure 1); grouting the fabricated structure at room temperature by using grouting equipment 3 (fig. 2); when the environmental temperature to the building engineering operation is higher, preferentially adopt low temperature air conditioning to detect the not closely knit condition of grout after the grout is accomplished, like low temperature nitrogen gas. The temperature difference between the temperature of the low-temperature nitrogen and the temperature of the sleeve is 10 ℃; at this time, the assembled structure in fig. 1 is sprayed with an extremely fast freezing agent (Ausbond 87), and then the metal sleeve component is thermally imaged and observed by an infrared thermal imaging instrument 5 (xinste Hti, HT-19), a grouting result inside the metal sleeve is shown on a screen 6 of the thermal imaging instrument (fig. 4), a non-compact part 7 inside the sleeve is displayed on the imaging instrument in a color which is obviously different from a surrounding area, and the non-compact degree is related to the color change depth, so that multiple information about the size and the position of a grouting hole can be obtained simultaneously.
Claims (7)
1. A method for detecting grouting defects of a sleeve based on temperature field change is characterized in that grouting operation is carried out on the sleeve, and then a medium with temperature difference with the sleeve is adopted to contact the surface of the sleeve, so that the sleeve forms a temperature field with temperature difference with the medium; then shooting by an imager to obtain a sleeve temperature field image; when sleeve grout had the unconcentration defect, the colour at unconcentration position was distinguished from the colour at closely knit position, realized the detection of the unconcentration defect of grout.
2. The method for detecting the grouting defect of the sleeve based on the temperature field change is characterized by comprising the following steps of:
(1) the basic structural members of the building are connected through sleeves, and grouting equipment is adopted to perform grouting operation on the sleeves after connection is completed;
(2) after grouting is finished, adopting a medium with temperature difference with the sleeve to contact the surface of the sleeve, so that the sleeve forms a temperature field with the temperature difference with the medium; the using amount of the medium is based on the condition that a uniform temperature field with temperature difference is ensured to be formed when the medium covers the surface of the sleeve and is in contact with the sleeve; the medium is gas or liquid, and the temperature difference is 10-100 ℃;
(3) immediately adopting an imager to carry out imaging observation on the surface of the sleeve;
(4) when the sleeve is not tightly grouted, the non-tight part inside the sleeve can be displayed on the imager in a color different from the surrounding area; when the sleeve grouting does not have the non-compact condition, the image color on the imager does not have the difference.
3. The method for detecting grouting defects of sleeves based on temperature field change according to claim 1 or 2, wherein the sleeves are metal sleeves.
4. The method for detecting grouting defects of sleeves based on temperature field change according to claim 1 or 2, wherein the sleeves are cross-shaped sleeves, T-shaped sleeves or straight sleeves.
5. The method for detecting grouting defects of sleeves based on temperature field change according to claim 1 or 2, wherein the imager is an infrared thermal imager.
6. The method for detecting grouting defects of sleeves based on temperature field changes according to claim 1 or 2, wherein the medium is water, nitrogen or freon.
7. The method for detecting grouting defects of sleeves based on temperature field change according to claim 2, wherein the basic structural members of the building are beams, columns, walls or floors.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910997441.6A CN110672663A (en) | 2019-10-18 | 2019-10-18 | Method for detecting sleeve grouting defects based on temperature field change |
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| CN201910997441.6A CN110672663A (en) | 2019-10-18 | 2019-10-18 | Method for detecting sleeve grouting defects based on temperature field change |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451970A (en) * | 2008-12-18 | 2009-06-10 | 上海交通大学 | Non-contact nondestructive detecting method for hollow drum position of ancient mural painting |
| CN106248734A (en) * | 2016-08-31 | 2016-12-21 | 爱德森（厦门）电子有限公司 | The device and method of auxiliary excitation in a kind of infrared thermal imaging detection technique |
| CN106324036A (en) * | 2016-08-30 | 2017-01-11 | 中国特种设备检测研究院 | Infrared thermal imaging detection method and device for heat shrinkable tape |
| CN106680315A (en) * | 2016-12-19 | 2017-05-17 | 中国建筑第八工程局有限公司 | Compactness detection method of steel pipe concrete |
| CN108226230A (en) * | 2018-01-05 | 2018-06-29 | 宁波大学 | A kind of reinforced bar sleeve grouting material compactness defect inspection method based on Piezoelectric Impedance effect |
| CN108519400A (en) * | 2018-02-06 | 2018-09-11 | 温州市交通工程试验检测有限公司 | A kind of prestressed girder grouting plumpness intelligent detecting method and system |
| CN109959683A (en) * | 2019-04-18 | 2019-07-02 | 南通大学 | A kind of detection method of sleeve Grouted density quality |
-
2019
- 2019-10-18 CN CN201910997441.6A patent/CN110672663A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451970A (en) * | 2008-12-18 | 2009-06-10 | 上海交通大学 | Non-contact nondestructive detecting method for hollow drum position of ancient mural painting |
| CN106324036A (en) * | 2016-08-30 | 2017-01-11 | 中国特种设备检测研究院 | Infrared thermal imaging detection method and device for heat shrinkable tape |
| CN106248734A (en) * | 2016-08-31 | 2016-12-21 | 爱德森（厦门）电子有限公司 | The device and method of auxiliary excitation in a kind of infrared thermal imaging detection technique |
| CN106680315A (en) * | 2016-12-19 | 2017-05-17 | 中国建筑第八工程局有限公司 | Compactness detection method of steel pipe concrete |
| CN108226230A (en) * | 2018-01-05 | 2018-06-29 | 宁波大学 | A kind of reinforced bar sleeve grouting material compactness defect inspection method based on Piezoelectric Impedance effect |
| CN108519400A (en) * | 2018-02-06 | 2018-09-11 | 温州市交通工程试验检测有限公司 | A kind of prestressed girder grouting plumpness intelligent detecting method and system |
| CN109959683A (en) * | 2019-04-18 | 2019-07-02 | 南通大学 | A kind of detection method of sleeve Grouted density quality |
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