CN110806379A - On-site detection method for mechanical property of structural adhesive after installation of glass curtain wall - Google Patents
On-site detection method for mechanical property of structural adhesive after installation of glass curtain wall Download PDFInfo
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- CN110806379A CN110806379A CN201810905411.3A CN201810905411A CN110806379A CN 110806379 A CN110806379 A CN 110806379A CN 201810905411 A CN201810905411 A CN 201810905411A CN 110806379 A CN110806379 A CN 110806379A
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- curtain wall
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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Abstract
The utility model provides a glass curtain wall's structural adhesive mechanical properties field test method after installation, the detection device that this method used includes the application of force operation arm (4) of taking the pulling force sucking disc, a plurality of laser emission probe (2, 5, 8) and laser receiving probe (3, 6, 7), includes step A: starting a force application operating arm (4) to adsorb the pulling force sucker to the specified position of the curtain wall glass (1) to be detected; b: the laser emission probes (2, 5 and 8) emit laser, and the laser reflected by the glass is collected by the corresponding laser receiving probes (3, 6 and 7); c: changing the acting force applied on the curtain wall glass (1) to be tested by the force application operating arm (4) according to a specified rule; d: then collecting the change of the laser angle received by each receiving probe, and calculating the deformation of the corresponding laser irradiation point after being stressed; e: and synthesizing the deformation of multiple points to obtain the actual stress distribution of the curtain wall glass to be measured, and obtaining the mechanical property of the structural adhesive for one circle of the curtain wall glass.
Description
Technical Field
The glass curtain wall is generally applied to the modern buildings, and the invention is just aimed at the field detection of the mechanical property of the structural adhesive of the glass curtain wall after installation.
Background
The glass curtain wall of modern high-rise building adopts hollow glass which is formed by combining mirror glass and common glass and filling dry air or inert gas into an interlayer. Hidden frame glass curtain wall wherein: the metal frame is hidden on the back of the glass, the metal frame cannot be seen outdoors, the glass is arranged on the outer side of the aluminum frame, and the glass is bonded with the aluminum frame through the silicone structure sealant. The load of the curtain wall is mainly born by the sealant.
However, after the installation of the glass curtain wall, there may be the following problems. 1. Glass self-explosion; 2. failure of structural adhesive of curtain wall glass; 3. the thermal stress causes the glass to break. The direct greatest harm is that the glass falls off, and the safety of personnel is harmed, so that the field detection of the mechanical property of the glass curtain wall after installation is particularly necessary.
Patent document CN103852417A proposes an existing method for detecting mechanical properties of structural adhesive of glass curtain wall on site, in which a stepping motor is used to drive a suction cup to pull glass, so that the structural adhesive is stretched, and the mechanical properties of the structural adhesive are detected. And a support structure with a supporting sucker and a tension sucker is provided, the middle tension sucker is operated to stretch the glass to be tested, and a device for pulling structural adhesive is attached. Its advantages are on-site detection, and simple operation. But has the following disadvantages: the structural deformation of the curtain wall glass supporting the whole device and the support structure can influence the measurement of the tensile deformation of the structural adhesive of the measured glass curtain wall, and the zero point calibration provided by the original text is difficult to eliminate in the actual measurement; the flatness of the curtain wall glass can also cause errors; the stretching force application point of the stretching disc is difficult to be ensured to be positioned at the gravity center position of the tested glass, the peripheral stress of the tested glass is uneven, the overall mechanical property of the structural adhesive coated on the periphery of the tested curtain wall glass can not be uniformly and accurately reflected, the measured stretching amount is difficult to be considered as the average stress deformation amount of the glass, and the accuracy can not be ensured.
The patent proposes a method for testing the tensile strength of structural adhesives different from those in laboratories, but does not describe the measures and theoretical analysis of the method for ensuring the testing accuracy, and particularly the method for shaped glass is more difficult to apply.
The invention provides a method for indirectly measuring the mechanical property of a structural adhesive of a glass curtain wall by utilizing multipoint deformation, which avoids the inaccuracy of single-point measurement, avoids the influence of other force application points on the measured glass in indirect measurement and improves the measurement accuracy.
Disclosure of Invention
The stress deformation of a circle of the structural adhesive for fixing the curtain wall glass is estimated by utilizing multipoint measurement, the mechanical property of the structural adhesive can be more accurately reflected, and a reliable and simple measurement method is provided for detecting the field irregular stress of the glass curtain wall.
The invention relates to a field detection method for mechanical properties of a structural adhesive after installation of a glass curtain wall.
The method comprises the following steps:
a: starting a force application operating arm, and adsorbing the tension sucker to the specified position of the curtain wall glass to be tested;
b: the laser emission probes emit laser, and the laser reflected by the glass is collected by the corresponding laser receiving probes;
c: changing the acting force applied on the curtain wall glass to be tested by the force application operating arm according to a specified rule;
d: then collecting the change of the laser angle received by each receiving probe, and calculating the stressed deformation of the corresponding laser irradiation point;
e: and synthesizing the deformation of multiple points to obtain the actual stress distribution of the curtain wall glass to be measured, and obtaining the mechanical property of the structural adhesive for one circle of the curtain wall glass.
According to the field detection method for the mechanical property of the structural adhesive after the glass curtain wall is installed, at least three pairs of laser emission probes and laser receiving probes are adopted in the step B.
The glass curtain wall is formed by bonding curtain wall glass with an aluminum frame by using silicone structural sealant, and the load of the curtain wall is mainly born by the sealant. Besides the mechanical properties of the curtain wall glass, the mechanical properties of the structural adhesive are also very important, and irregular and on-site detection is needed.
The force application operating arm is a device capable of applying tension or thrust to the mounted curtain wall glass to be measured, and mainly comprises a tension sucker, a moving device, a driver and the like. The pulling force sucking disc can adsorb the application of force operating arm to being surveyed on the assigned position of curtain wall glass, the assigned position is near being surveyed curtain wall glass's focus.
And starting the force application operating arm to be close to the measured glass, aligning the tension sucker to the position close to the specified gravity center of the measured curtain wall glass, starting the adsorption action, and adsorbing the glass. After the tension chuck is reliably adsorbed, the moving device of the force application operating arm can drive the whole force application operating arm to move, so that the tension chuck is driven to generate the acting force for pulling and pressing the curtain wall glass, and the curtain wall glass correspondingly drives the curtain wall glass to be coated with a circle of structural adhesive to generate certain tensile deformation.
Because the designated position is only near the gravity center of the curtain wall glass, and simultaneously, the curtain wall glass is not always very flat, and is in an asymmetric and irregular shape in many times, if only measuring the stress deformation of a single point, the mechanical property of the structural adhesive which is coated for one circle is difficult to accurately measure.
Therefore, a plurality of pairs of laser emission probes and laser receiving probes are arranged in front of the curtain wall glass to be detected, and in a set angle range, laser emitted by the laser emission probes in one pair of laser probes is irradiated onto the surface of the curtain wall glass to be detected and then reflected to the other laser receiving probe in the corresponding pair in short distance.
The invention has at least three pairs of laser emission probes and laser receiving probes.
When a laser beam emitted by the laser emission probe reaches the surface of the curtain wall glass, the laser beam can be reflected to the laser receiving probe at a short distance due to the reasonable setting of the angle. At the moment, the tested curtain wall glass is not applied with pulling force or pushing force by the force application operating arm, and the light spot of the laser can be stabilized on a certain fixed position of the corresponding laser receiving probe. When the force application operating arm is changed to apply pulling force or pushing force, the laser irradiation point of the curtain wall glass to be detected is correspondingly deformed, the reflection angle of the reflected laser is changed, the position of a light spot of the reflected laser on the laser receiving probe is changed along with the change of the reflection angle of the reflected laser, and the change of the position of the light spot of the reflected laser corresponding to the glass is larger when the glass is deformed. And detecting and processing the position change to calculate and obtain the corresponding deformation of the curtain wall glass at the stress light irradiation point.
The acting force of the curtain wall glass to be tested, which is applied by the force application operating arm, is changed according to the specified rules and cannot exceed the reasonable range which can be borne by the glass and the structural adhesive, and meanwhile, the loading modes such as the loading change rate and the like are also in accordance with the specification.
The above is the working condition of one pair of probes, and during actual measurement, other pairs of probes can also simultaneously obtain the corresponding deformation of the curtain wall glass at each laser irradiation point.
From the geometrical knowledge: three points may define a plane. At least the deformation of the three points is obtained, and the plane position of the space can be accurately obtained in real time after the whole piece of curtain wall glass is stressed, so that the whole stress deformation and stress distribution of the whole piece of curtain wall glass coated with a circle of structural adhesive can be accurately measured. If there are more than three points, the opportunity for more accurate correction of the plane is obtained, as is required in view of the greater deformation of the glass. If the mechanical properties of the glass are consistent and known or the deformation is very small, the distribution of the deformation of the structural adhesive around the curtain wall glass and the geometric relationship between the structural adhesive and the applied external force can be accurately calculated by using the deformation of the three points, so that the mechanical properties of the corresponding structural adhesive can be calculated in real time.
In summary, the whole measurement steps are as follows:
a: starting a force application operating arm, and adsorbing the tension sucker to the specified position of the curtain wall glass to be tested;
b: the laser emission probes emit laser, and the laser reflected by the glass is collected by the corresponding laser receiving probes;
c: changing the acting force applied on the curtain wall glass to be tested by the force application operating arm according to a specified rule;
d: then collecting the change of the laser angle received by each receiving probe, and calculating the stressed deformation of the corresponding laser irradiation point;
e: and synthesizing the deformation of multiple points to obtain the actual stress distribution of the curtain wall glass to be measured, and obtaining the mechanical property of the structural adhesive for one circle of the curtain wall glass.
The structural adhesive mechanical property field detection method after the glass curtain wall is installed is convenient to detect, simple in device, convenient to apply on site and good in popularization value.
Drawings
FIG. 1 is a schematic structural diagram of a structural adhesive mechanical property field detection device after installation of a glass curtain wall.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
In the attached drawing 1, the curtain wall glass 1 is a measured curtain wall glass to be measured, the periphery of which is coated with the structural adhesive, and the lower surface of one circle of the edge of the curtain wall glass is coated with the structural adhesive (or coated on the upper surface of one circle, which is determined according to the position of adhesion). Three pairs of laser emitting probe and laser receiving probe are respectively placed at different positions in front of the glass (shown as above the glass), wherein the laser emitting probe 2 and the laser receiving probe 3 are a pair, the laser emitting probe 5 and the laser receiving probe 6 are a pair, and the laser emitting probe 8 and the laser receiving probe 7 are a pair.
The force application operating arm 4 is provided with a tension sucker 9.
Firstly, the force application operating arm 4 is started to be close to the detected curtain wall glass 1, and the pulling force suction cup 9 is aligned to the position close to the gravity center of the detected curtain wall glass 1, namely the designated position. Starting the adsorption action, the pulling force suction cup 9 is reliably adsorbed on the specified position of the curtain wall glass 1.
Then, the laser emission probe 2, the laser emission probe 5 and the laser emission probe 8 of the three pairs of laser probes respectively emit laser, and the laser receiving probe 3, the laser receiving probe 6 and the laser receiving probe 7 acquire the laser emitted by the corresponding laser emission probes and reflected by the curtain wall glass.
At this time, the acting force applied to the curtain wall glass 1 to be measured by the force application operating arm 4 is changed according to a predetermined rule. The acting force of the curtain wall glass 1 to be tested, which is applied by the force application operating arm 4, is changed according to the regulation rule and cannot exceed the reasonable range of the glass and the structural adhesive, and the loading modes such as the loading change rate and the like are also in accordance with the regulation.
After the curtain wall glass 1 is stressed, deformation can be generated, corresponding deformation can be generated at each laser irradiation point, the angle of the reflected laser also changes along with the change, and the positions of the light spots of the reflected laser collected by the laser receiving probe 3, the laser receiving probe 6 and the laser receiving probe 7 also change along with the change, so that the change of the angle of the received laser reflection can be calculated, and the deformation of the laser reflection point of the curtain wall glass 1 can be indirectly calculated.
After the deformation of the three points of the curtain wall glass 1 is obtained, the plane position of the space of the whole corresponding curtain wall glass 1 after being stressed can be accurately obtained in real time, so that the whole stress deformation and stress distribution of the whole corresponding structural adhesive coated on the whole curtain wall glass 1 in a circle can be accurately measured. The distribution of the deformation of the structural adhesive for one circle of the curtain wall glass 1 and the geometric relationship between the structural adhesive and the applied external force can be accurately calculated by using the deformation of the three points, so that the mechanical property of the corresponding structural adhesive can be calculated in real time. In practice, more than three pairs of laser emitting and receiving probes may be used.
The above operation process is carried out according to the following measurement steps:
a: starting a force application operating arm, and adsorbing the tension sucker to the specified position of the curtain wall glass to be tested;
b: the laser emission probes emit laser, and the laser reflected by the glass is collected by the corresponding laser receiving probes;
c: changing the acting force applied on the curtain wall glass to be tested by the force application operating arm according to a specified rule;
d: then collecting the change of the laser angle received by each receiving probe, and calculating the stressed deformation of the corresponding laser irradiation point;
e: and synthesizing the deformation of multiple points to obtain the actual stress distribution of the curtain wall glass to be measured, and obtaining the mechanical property of the structural adhesive for one circle of the curtain wall glass.
The deformation of multiple points and the actual stress distribution of the curtain wall glass to be measured are integrated, and the mechanical property of the structural adhesive for one circle of the curtain wall glass can be accurately measured in real time.
The method is simple and convenient, the device is simple, the field application is easy, and the method has wide application prospect.
Claims (2)
1. The utility model provides a structural adhesive mechanical properties field test method after glass curtain wall installation, the detection device that this method used includes the application of force operation arm of taking the pulling force sucking disc, a plurality of laser emission probe and receiving probe, its characterized in that:
the method comprises the following steps:
a: starting a force application operating arm, and adsorbing the tension sucker to the specified position of the curtain wall glass to be tested;
b: the laser emission probes emit laser, and the laser reflected by the glass is collected by the corresponding laser receiving probes;
c: changing the acting force applied on the curtain wall glass to be tested by the force application operating arm according to a specified rule;
d: then collecting the change of the laser angle received by each receiving probe, and calculating the stressed deformation of the corresponding laser irradiation point;
e: and synthesizing the deformation of multiple points to obtain the actual stress distribution of the curtain wall glass to be measured, and obtaining the mechanical property of the structural adhesive for one circle of the curtain wall glass.
2. The method for the on-site detection of the mechanical property of the structural adhesive after the installation of the glass curtain wall as claimed in claim 1, further characterized in that: and B, at least three pairs of laser emission probes and laser receiving probes are used in the step B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905411.3A CN110806379A (en) | 2018-08-06 | 2018-08-06 | On-site detection method for mechanical property of structural adhesive after installation of glass curtain wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905411.3A CN110806379A (en) | 2018-08-06 | 2018-08-06 | On-site detection method for mechanical property of structural adhesive after installation of glass curtain wall |
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| CN110806379A true CN110806379A (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810905411.3A Pending CN110806379A (en) | 2018-08-06 | 2018-08-06 | On-site detection method for mechanical property of structural adhesive after installation of glass curtain wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740146A (en) * | 2021-09-08 | 2021-12-03 | 安徽美安密封件股份有限公司 | Sealed glue detecting system based on laser calibration |
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| CN103257152A (en) * | 2012-02-21 | 2013-08-21 | 中国科学院金属研究所 | Small-size solid sample thermal expansion measuring device |
| CN103499496A (en) * | 2013-09-18 | 2014-01-08 | 浙江工业大学 | Flexural rigidity testing device in copious cooling and high-temperature environments |
| CN104631516A (en) * | 2014-12-22 | 2015-05-20 | 长安大学 | Portable wall space deformation monitoring device for reinforced soil retaining wall and monitoring method |
| CN105973452A (en) * | 2016-05-12 | 2016-09-28 | 秦皇岛市地方道路管理处 | Remote bridge vibration monitoring system and method |
| CN106092631A (en) * | 2016-07-20 | 2016-11-09 | 浙江五洲工程项目管理有限公司 | A kind of detection device of the reliability after glass curtain wall installation |
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2018
- 2018-08-06 CN CN201810905411.3A patent/CN110806379A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257152A (en) * | 2012-02-21 | 2013-08-21 | 中国科学院金属研究所 | Small-size solid sample thermal expansion measuring device |
| CN103499496A (en) * | 2013-09-18 | 2014-01-08 | 浙江工业大学 | Flexural rigidity testing device in copious cooling and high-temperature environments |
| CN104631516A (en) * | 2014-12-22 | 2015-05-20 | 长安大学 | Portable wall space deformation monitoring device for reinforced soil retaining wall and monitoring method |
| CN105973452A (en) * | 2016-05-12 | 2016-09-28 | 秦皇岛市地方道路管理处 | Remote bridge vibration monitoring system and method |
| CN106092631A (en) * | 2016-07-20 | 2016-11-09 | 浙江五洲工程项目管理有限公司 | A kind of detection device of the reliability after glass curtain wall installation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740146A (en) * | 2021-09-08 | 2021-12-03 | 安徽美安密封件股份有限公司 | Sealed glue detecting system based on laser calibration |
| CN113740146B (en) * | 2021-09-08 | 2024-03-12 | 安徽美安密封件股份有限公司 | Sealant detection system based on laser calibration |
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Application publication date: 20200218 |
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