CN116183152A - Method for testing impact resistance of building curtain wall - Google Patents
Method for testing impact resistance of building curtain wall Download PDFInfo
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- CN116183152A CN116183152A CN202310436891.4A CN202310436891A CN116183152A CN 116183152 A CN116183152 A CN 116183152A CN 202310436891 A CN202310436891 A CN 202310436891A CN 116183152 A CN116183152 A CN 116183152A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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Abstract
The invention provides a method for testing the impact resistance of a building curtain wall, which is applied to the field of impact testing, and is characterized in that the impact resistance is judged by detecting the stress condition of the building curtain wall when the building curtain wall is broken, so that the impact strength is continuously increased or reduced in a small range, the stress data of the damaged building curtain wall is retested, the error of the detection result is effectively reduced, the accuracy of the impact resistance detection is improved, the building curtain wall which does not meet the impact resistance standard is effectively avoided to be used, the safety coefficient of the used building curtain wall is higher, in addition, the pre-treatment can be carried out on the building curtain wall to be detected before the detection, when the crack appears, the temperature of the crack can be deepened, the trace can be enlarged, the high-definition camera can acquire the image information of the crack more timely, and the detection result is more accurate.
Description
Technical Field
The application relates to the field of impact testing, in particular to a method for testing impact resistance of a building curtain wall.
Background
At present, curtain wall structures are adopted outside a plurality of high-rise buildings, wherein the curtain wall structures comprise glass curtain walls, stone curtain walls, metal panel curtain walls and the like, compared with glass curtain walls such as painted brick walls, concrete walls and the like, the curtain wall structure has the characteristics of light weight, flexible design and the like, has modern aesthetic feeling, is more convenient to update and maintain, plays a role in decorating an outer wall, and has elegant and fazenda effects.
Because most of the curtain wall is hung outside a building, the curtain wall has higher safety requirements, and has better wind resistance, water resistance and air permeability and heavy object impact resistance, so that the building curtain wall needs impact resistance detection after production, in the prior art, when impact resistance detection is carried out, the stress detection during fragmentation is more prone to happen, however, the building curtain wall has great potential safety hazards when the building curtain wall is impacted and cracked and is not fragmented, and therefore, when the building curtain wall is detected, the stress during detection is higher in accuracy of the impact resistance detection result, and the detection result is higher.
Disclosure of Invention
The application aims at continuously detecting the stress of only cracking under the condition of detecting stress data during crushing, so as to effectively improve the accuracy of detection results, and compared with the prior art, the method for testing the impact resistance of the building curtain wall comprises the following steps:
s1, firstly, mounting a building curtain wall to be detected on impact resistance performance testing equipment, and adjusting the position of the building curtain wall to enable the center position of the building curtain wall to be opposite to a test heavy ball to be released on the impact resistance performance testing equipment;
s2, preprocessing the building curtain wall before testing, debugging the position of the test heavy ball after preprocessing, and enabling the test heavy ball to fall down and strike the building curtain wall by controlling the free release of the test heavy ball;
s3, shooting and acquiring the surface characteristics of the building curtain wall after being impacted by using a high-definition camera, and judging whether the building curtain wall is cracked or not by using a computer image analysis technology;
and S4, when the building curtain wall is not cracked, installing a new test heavy ball on the impact resistance performance testing equipment, controlling the position gradient of the test heavy ball on the impact resistance performance testing equipment to rise, and repeating the steps S2-S3 until the building curtain wall is cracked or broken, recording the height of the test heavy ball when the building curtain wall is cracked or broken, and then calculating the force when the building curtain wall is contacted with the test heavy ball to finish the test.
The stress condition during the crushing of the building curtain wall is detected, so that the impact resistance is judged, the impact force is continuously increased or reduced in a small range, the retest is performed, the stress data of the damaged building curtain wall is effectively reduced, the error of the detection result is effectively reduced, the accuracy of the detection of the impact resistance is improved, the building curtain wall which does not meet the impact resistance standard is effectively avoided, the safety coefficient of the building curtain wall which is put into use is higher, in addition, the building curtain wall to be detected is pretreated before detection, when the crack occurs, the temperature of the crack can be deepened, the trace can be enlarged, the image information of the crack can be obtained in time by a high-definition camera, and the detection result is more accurate.
Further, in step S4, when the building curtain wall is only cracked due to the impact of the heavy ball, a building curtain wall with the specification identical to that of the cracked building curtain wall is selected, and when the test is performed again, the initial height of the heavy ball is increased in a gradient manner on the basis of the original cracking, and the increase range is not more than 1/3 of the gradient increase range in step S4 until the building curtain wall is cracked.
Further, in step S4, when the building curtain wall is directly broken by the impact of the heavy ball, a building curtain wall with the specification identical to that of the broken building curtain wall is selected, and when the test is performed again, the initial height of the heavy ball is reduced in a gradient manner on the basis of original cracking, and the reduction range is not more than 1/3 of the gradient increase range in step S4 until the building curtain wall is broken or unchanged.
Further, when retesting, after the high change at every turn of test heavy ball, when retesting, all need change a new building curtain, effectively guarantee the accuracy of testing result, effectively avoid receiving less power, broken promptly because of the building curtain of fracture, lead to the condition emergence of low in the impact resistance in the testing result.
Further, the specific steps of the preprocessing in step S2 are as follows:
cleaning and wiping the upper surface and the lower surface of the building curtain wall to be detected to remove greasy dirt and floating dust, spraying atomized colored water mist on the lower surface of the building curtain wall, forming a thin mist layer on the lower surface of the building curtain wall, gathering the water mist on the surface of the building curtain wall towards the crack after the crack occurs when the building curtain wall is impacted by a heavy ball, and partially penetrating into the crack, so that the crack is visually deepened, a high-definition camera is convenient to capture crack image information, the detection result is more accurate, and the error is smaller.
Further, impact resistance test equipment includes the bottom plate, install the control box on the bottom plate, still install lifting unit on the bottom plate, electric couple is installed to lifting unit lower extreme, grab on the electric couple and press from both sides the heavy ball of test, two test jig are installed to the bottom plate upper end, the fixed centre gripping of building curtain wall that waits to detect is between two test jig, high definition digtal camera is installed to the bottom plate bottom, high definition digtal camera, building curtain and the heavy ball of test are located same axis, when detecting, through the height of electric couple on the steerable lifting unit of control box, make the heavy ball of test highly can change automatically, afterwards control electric couple opens, can realize the free release of the heavy ball of test, make its free fall and fall on the building curtain wall.
Optionally, the step of preprocessing in step S2 is:
the bottom surface of the building curtain wall to be detected is attached with the mark-enlarging paste, the position of the mark-enlarging paste is adjusted to enable the center of the mark-enlarging paste to be opposite to the center point of the building curtain wall, the diameter of the mark-enlarging paste is not smaller than half of the width of the building curtain wall, the mark-enlarging paste and the impact point of the test heavy ball are enabled to coincide with the impact point of the building curtain wall, meanwhile, the radius of the mark-enlarging paste is large, the coverage area of the mark-enlarging paste is large, and the crack detection effect on the periphery of the impact point is better.
Further, the mark-expanding paste comprises a mark-developing ring which is pasted with the building curtain wall, a transparent partition plate fixedly connected to the inner wall of the mark-developing ring and a convex layer fixedly connected to the lower end part of the mark-developing ring, transparent color liquid is filled in the inner part of the mark-developing ring, a plurality of liquid outlet pipes are further arranged on the inner wall of the mark-developing ring, a transparent plug is in interference fit with the mouth part of each liquid outlet pipe, and the liquid outlet pipes are located above the transparent partition plate.
Further, the trace ring comprises an upper drum liquid layer and a lower liquid supporting layer fixedly connected to the lower end of the upper drum liquid layer, the bottom of the lower liquid supporting layer is subjected to cutting leveling treatment, the lower liquid supporting layer is of a hard structure, an adhesive layer is coated on the outer surface of the upper drum liquid layer, a hard plastic film is adhered to the surface of the adhesive layer, when the trace is adhered to the bottom of a building curtain wall, the hard plastic film is torn off firstly, the adhesive layer is exposed and then is adhered to the corresponding position of the bottom of the building curtain wall, a cavity is formed among the transparent partition plate, the trace ring and the building curtain wall, and then the transparent partition plate is pressed, so that the upper drum liquid layer is deformed, and at the moment, transparent color liquid in the upper drum liquid layer overflows into the cavity and fills the cavity.
Further, the evagination layer is transparent hemisphere structure, and the saturation filling has clear pure water in the evagination layer, and its hemispherical structure can be regarded as interim convex lens, can play the effect of amplifying to the crack that inside striking produced, cooperates transparent colored liquid to the deepening effect of crack, can make the high definition camera catch more clear crack, compares in prior art, improves the precision of testing result by a wide margin, when making the building curtain use, factor of safety is higher.
Compared with the prior art, the advantage of this application lies in:
according to the method, the stress condition is detected when the building curtain wall is broken, so that the impact resistance is judged, the impact force is continuously increased or reduced in a small range, the stress data of the damaged building curtain wall is retested, the error of the detection result is effectively reduced, the accuracy of the detection of the impact resistance is improved, the building curtain wall which does not meet the impact resistance standard is effectively avoided, the safety coefficient of the building curtain wall which is put into use is higher, in addition, the building curtain wall which is to be detected before detection is subjected to pretreatment, when cracks appear, the temperature of the cracks can be deepened, the marks can be enlarged, the image information of the cracks can be obtained in time, and the detection result is more accurate.
Drawings
FIG. 1 is a main flow block diagram of the present application;
FIG. 2 is a perspective view of the impact resistance testing apparatus of the present application;
FIG. 3 is a front view of the impact resistance testing apparatus of the present application;
FIG. 4 is a graph showing the comparison of the pretreatment before and after pretreatment in example 1 of the present application;
FIG. 5 is a front view of the impact resistance test apparatus of example 2 of the present application;
FIG. 6 is a perspective view of the patch of the present application;
FIG. 7 is a schematic illustration of the present application when the patch is adhered to a wall of a building;
FIG. 8 is a front view of the patch of the present application;
FIG. 9 is an exploded view of the patch of the present application;
fig. 10 is a graph showing the change of the tracking loop of the patch of the present application before and after it is applied to a building curtain wall.
The reference numerals in the figures illustrate:
1 bottom plate, 2 lifting unit, 21 electric couple, 3 test heavy ball, 4 control box, 5 test fixture, 6 high definition camera, 71 show trace ring, 711 upper drum liquid layer, 712 lower liquid layer, 72 evagination layer, 73 transparent baffle, 8 drain pipe.
Detailed Description
The embodiments will be described in detail and throughout the specification with reference to the drawings, wherein, based on the embodiments in the application, all other embodiments obtained by persons skilled in the art without making creative efforts are within the scope of protection of the application.
Example 1:
the invention provides a method for testing the impact resistance of a building curtain wall, referring to fig. 1, comprising the following steps:
s1, as shown in figures 2-3, a shows a building curtain wall, firstly, mounting the building curtain wall to be detected on impact resistance performance testing equipment, and adjusting the position of the building curtain wall to enable the center position of the building curtain wall to be opposite to a test heavy ball 3 to be released on the impact resistance performance testing equipment;
s2, preprocessing the building curtain wall before testing, debugging the position of the test heavy ball 3 after preprocessing, and enabling the test heavy ball 3 to fall down and strike the building curtain wall by controlling free release of the test heavy ball 3;
s3, shooting and acquiring the surface characteristics of the building curtain wall after being impacted through a high-definition camera 6, and judging whether the building curtain wall is cracked or not through a computer image analysis technology;
and S4, when the building curtain wall is not cracked, installing a new test heavy ball 3 on the impact resistance performance testing equipment, controlling the position gradient of the test heavy ball 3 on the impact resistance performance testing equipment to rise, repeating the steps S2-S3 until the building curtain wall is cracked or broken, recording the height of the test heavy ball 3 when the building curtain wall is cracked or broken, and then calculating the force when the building curtain wall is contacted with the test heavy ball 3 to finish the test.
In the step S4, when the test heavy ball 3 impacts to enable the building curtain wall to be cracked, a building curtain wall with the specification identical to that of the cracked building curtain wall is selected, and when the test is carried out again, the initial height of the test heavy ball 3 is increased in a gradient manner on the basis of the original cracking, and the increasing amplitude is not more than 1/3 of the gradient increasing amplitude in the step S4 until the building curtain wall is cracked.
In the step S4, when the building curtain wall is directly broken by the impact of the test heavy ball 3, a building curtain wall with the specification identical to that of the broken building curtain wall is selected, and when the test is carried out again, the initial height of the test heavy ball 3 is reduced in a gradient manner on the basis of original cracking, and the reduction range is not more than 1/3 of the gradient increase range in the step S4 until the building curtain wall is broken or has no change.
When retesting, the high back of every turn change of test heavy ball 3, when retesting, all need change a new building curtain, effectively guarantee the accuracy of testing result, effectively avoid receiving less power, broken promptly because of the building curtain of fracture, lead to the condition emergence of low impact resistance in the testing result.
Referring to fig. 4, b represents a mist layer, and the specific steps of pretreatment in step S2 are as follows:
cleaning and wiping the upper surface and the lower surface of the building curtain wall to be detected to remove greasy dirt and floating dust, spraying atomized colored water mist on the lower surface of the building curtain wall, forming a thin mist layer on the lower surface of the building curtain wall, gathering the water mist on the surface of the building curtain wall towards the crack after the crack occurs when the building curtain wall is impacted by the heavy ball 3, and partially penetrating into the crack, so that the crack is visually deepened, the high-definition camera 6 is convenient to capture crack image information, the detection result is more accurate, and the error is smaller.
Referring to fig. 2-3, the impact resistance test device comprises a bottom plate 1, a control box 4 is installed on the bottom plate 1, a lifting component 2 is also installed on the bottom plate 1, an electric hook 21 is installed at the lower end of the lifting component 2, a test heavy ball 3 is clamped on the electric hook 21, two test clamps 5 are installed at the upper end of the bottom plate 1, a building curtain wall to be detected is fixedly clamped between the two test clamps 5, a high-definition camera 6 is installed at the bottom of the bottom plate 1, the high-definition camera 6, the building curtain wall and the test heavy ball 3 are located on the same central axis, during detection, the height of the electric hook 21 on the lifting component 2 can be controlled through the control box 4, so that the height of the test heavy ball 3 can be automatically changed, then the electric hook 21 is controlled to be opened, and free release of the test heavy ball 3 can be realized, so that the test heavy ball falls on the building curtain wall.
According to the method, the stress condition is detected when the building curtain wall is broken, so that the impact resistance is judged, the impact force is continuously increased or reduced in a small range, the stress data of the damaged building curtain wall is retested, the error of the detection result is effectively reduced, the accuracy of the detection of the impact resistance is improved, the building curtain wall which does not meet the impact resistance standard is effectively avoided, the safety coefficient of the building curtain wall which is put into use is higher, in addition, the building curtain wall which is to be detected before detection is subjected to pretreatment, and when cracks appear, the temperature of the cracks can be deepened, so that the high-definition camera 6 can acquire the cracked image information more timely, and the detection result is more accurate.
Example 2:
referring to fig. 5 and 7, c represents a trace patch, and the preprocessing step in step S2 is as follows:
the bottom surface of the building curtain wall to be detected is attached with the mark-enlarging paste, the position of the mark-enlarging paste is adjusted, the center of the mark-enlarging paste is opposite to the center point of the building curtain wall, the diameter of the mark-enlarging paste is not smaller than half of the width of the building curtain wall, the mark-enlarging paste and the impact point of the test heavy ball 3 are overlapped with the impact point of the building curtain wall, meanwhile, the radius of the mark-enlarging paste is larger, the coverage area of the mark-enlarging paste is larger, and the crack detection effect on the periphery of the impact point is better.
Referring to fig. 6 and 8, the trace patch includes a trace ring 71 adhered to the building curtain wall, a transparent partition plate 73 fixedly connected to the inner wall of the trace ring 71, and an outer convex layer 72 fixedly connected to the lower end of the trace ring 71, wherein transparent color liquid is filled in the trace ring 71, a plurality of liquid outlet pipes 8 are further installed on the inner wall of the trace ring 71, the mouth of each liquid outlet pipe 8 is in interference fit with a transparent plug, and the liquid outlet pipes 8 are located above the transparent partition plate 73, as shown in fig. 9, the trace ring 71 includes an upper drum liquid layer 711 and a lower liquid-propping layer 712 fixedly connected to the lower end of the upper drum liquid layer 711, the bottom of the lower liquid-propping layer 712 is subjected to a leveling treatment, the lower liquid-propping layer 712 is of a hard structure, an adhesive layer is coated on the outer surface of the upper drum liquid layer 711, as shown in fig. 10, when the trace patch is attached to the bottom of the building curtain wall, the hard plastic film is torn off, the adhesive layer is exposed, and then attached to the corresponding position of the bottom of the building curtain wall, the transparent partition plate 73, the trace ring 71 and the building curtain wall form a cavity, and then the upper drum liquid layer 711 is pressed down, and the lower liquid layer is enabled to permeate into the cavity when the cavity, and the cavity is full of the color crack, and the color crack is formed.
The outer convex layer 72 is of a transparent hemispherical structure, clear purified water is filled in the outer convex layer 72 in a saturated mode, the hemispherical structure can be used as a temporary convex lens, an amplifying effect can be achieved on cracks generated by internal impact, and the transparent color liquid is matched with the deepening effect of the cracks, so that the high-definition camera 6 can capture more clear cracks, and compared with the prior art, the accuracy of detection results is greatly improved, and when the building curtain wall is used, the safety coefficient is higher.
The foregoing is merely a preferred embodiment of the present application, which is used in connection with the actual requirement, but the scope of the present application is not limited thereto.
Claims (10)
1. The method for testing the impact resistance of the building curtain wall is characterized by comprising the following steps of:
s1, firstly, mounting a building curtain wall to be detected on impact resistance performance testing equipment, and adjusting the position of the building curtain wall to enable the center position of the building curtain wall to be opposite to a test heavy ball (3) to be released on the impact resistance performance testing equipment;
s2, preprocessing the building curtain wall before testing, debugging the position of the test heavy ball (3) after preprocessing, and enabling the test heavy ball (3) to fall down and strike the building curtain wall by controlling the free release of the test heavy ball;
s3, shooting and acquiring the surface characteristics of the building curtain wall after being impacted through a high-definition camera (6), and judging whether the building curtain wall is cracked or not through a computer image analysis technology;
and S4, when the building curtain wall is not cracked, installing a new test heavy ball (3) on the impact resistance performance testing equipment, controlling the position gradient of the test heavy ball (3) on the impact resistance performance testing equipment to rise, repeating the steps S2-S3 until the building curtain wall is cracked or broken, recording the height of the test heavy ball (3) when the building curtain wall is cracked or broken, and then calculating the force when the test heavy ball is contacted with the building curtain wall to finish the test.
2. The method for testing the impact resistance of the building curtain wall according to claim 1, wherein in the step S4, when the building curtain wall is only cracked due to the impact of the test heavy ball (3), a building curtain wall with the specification identical to that of the cracked building curtain wall is selected, and when the test is carried out again, the initial height of the test heavy ball (3) is increased in a gradient manner on the basis of the original cracking, and the increase amplitude is not more than 1/3 of the gradient increase amplitude in the step S4 until the building curtain wall is cracked.
3. The method for testing the impact resistance of the building curtain wall according to claim 2, wherein in the step S4, when the building curtain wall is directly broken due to the impact of the test heavy ball (3), a building curtain wall with the specification identical to that of the broken building curtain wall is selected, and when the test is carried out again, the initial height of the test heavy ball (3) is reduced in a gradient manner on the basis of the original broken building curtain wall, and the reduction range is not more than 1/3 of the gradient increase range in the step S4 until the building curtain wall is broken or unchanged.
4. A method for testing the impact resistance of a building curtain wall according to claim 3, wherein when retesting, a new building curtain wall is required to be replaced after each change in the height of the heavy ball (3) is tested.
5. The method for testing the impact resistance of the building curtain wall according to claim 1, wherein the specific steps of the pretreatment in the step S2 are as follows:
cleaning the upper and lower surfaces of the building curtain wall to be detected, removing greasy dirt and floating dust, spraying atomized colored water mist on the lower surface of the building curtain wall, and forming a thin mist layer on the lower surface of the building curtain wall.
6. The method for testing the impact resistance of the building curtain wall according to claim 1, wherein the impact resistance testing equipment comprises a base plate (1), a control box (4) is installed on the base plate (1), a lifting assembly (2) is further installed on the base plate (1), an electric hook (21) is installed at the lower end of the lifting assembly (2), a test heavy ball (3) is clamped on the electric hook (21), two testing clamps (5) are installed at the upper end of the base plate (1), the building curtain wall to be tested is fixedly clamped between the two testing clamps (5), a high-definition camera (6) is installed at the bottom of the base plate (1), and the high-definition camera (6), the building curtain wall and the test heavy ball (3) are located on the same central axis.
7. The method for testing the impact resistance of the building curtain wall according to claim 6, wherein the method comprises the following steps: the step of preprocessing in the step S2 is as follows:
and attaching a mark patch to the bottom surface of the building curtain wall to be detected, and adjusting the position of the mark patch to enable the center of the mark patch to be opposite to the center point of the building curtain wall, wherein the diameter of the mark patch is not smaller than half of the width of the building curtain wall.
8. The method for testing the impact resistance of the building curtain wall according to claim 7, wherein the mark-enlarging paste comprises a mark-enlarging ring (71) pasted with the building curtain wall, a transparent partition plate (73) fixedly connected to the inner wall of the mark-enlarging ring (71) and an outer convex layer (72) fixedly connected to the lower end part of the mark-enlarging ring (71), transparent color liquid is filled in the mark-enlarging ring (71), a plurality of liquid outlet pipes (8) are further arranged on the inner wall of the mark-enlarging ring (71), transparent plugs are in interference fit with the mouth parts of the liquid outlet pipes (8), and the liquid outlet pipes (8) are located above the transparent partition plate (73).
9. The method for testing the impact resistance of the building curtain wall according to claim 8, wherein the tracking ring (71) comprises an upper drum liquid layer (711) and a lower liquid-resisting layer (712) fixedly connected to the lower end of the upper drum liquid layer (711), the bottom of the lower liquid-resisting layer (712) is subjected to leveling treatment, the lower liquid-resisting layer (712) is of a hard structure, an adhesive layer is coated on the outer surface of the upper drum liquid layer (711), and a hard plastic film is attached to the surface of the adhesive layer.
10. The method for testing the impact resistance of the building curtain wall according to claim 9, wherein the outer convex layer (72) is of a transparent hemispherical structure, and clear purified water is filled in the outer convex layer (72) in a saturated manner.
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