CN108489819A - The detection device and appraisal procedure of structure glue for glass curtain wall - Google Patents
The detection device and appraisal procedure of structure glue for glass curtain wall Download PDFInfo
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- CN108489819A CN108489819A CN201810345158.0A CN201810345158A CN108489819A CN 108489819 A CN108489819 A CN 108489819A CN 201810345158 A CN201810345158 A CN 201810345158A CN 108489819 A CN108489819 A CN 108489819A
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- 239000003292 glue Substances 0.000 title claims abstract description 169
- 239000011521 glass Substances 0.000 title claims abstract description 135
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000006073 displacement reaction Methods 0.000 claims abstract description 50
- 238000013461 design Methods 0.000 claims abstract description 17
- 230000006378 damage Effects 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims description 30
- 230000008859 change Effects 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 239000000565 sealant Substances 0.000 abstract description 25
- 238000011156 evaluation Methods 0.000 abstract description 11
- 239000012530 fluid Substances 0.000 abstract description 6
- 230000035882 stress Effects 0.000 description 16
- 229920001296 polysiloxane Polymers 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 241000252254 Catostomidae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009658 destructive testing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Classifications
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/14—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by dead weight, e.g. pendulum; generated by springs tension
-
- G—PHYSICS
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0033—Weight
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Load-Bearing And Curtain Walls (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
The present invention provides a kind of appraisal procedures and detection device of the structure glue for glass curtain wall, the glass curtain wall includes frame and is fixed at least one block of glass to be measured of the frame, and at least one block of glass to be measured is adhered to the frame by the structure glue；The method includes：Measure the thickness t of the structure glueS；Apply the active force far from the frame to the glass to be measured；Measure the displacement ability to bear δ c of the structure glue；And the minimal design thickness t of the structure glue is calculated according to the displacement ability to bear δ c of the structure glueS, c, if tS, thickness ts of the c less than or equal to the structure glueS, and the structure glue described in detection process does not have cohesional failure or bond damage, then the structure glue is rated as effectively.The appraisal procedure of an embodiment of the present invention, can be under the premise of not destroying glass curtain wall structure glue, and comprehensively whether evaluation structure fluid sealant can continue to effectively use.
Description
Technical field
The present invention relates to the detections of structure glue, particularly for the appraisal procedure of the validity of the structure glue of glass curtain wall.
Background technology
Glass curtain wall is to assemble the structure outer of combination based on the glass curtain wall unit part that fluid sealant is bonded and sealed.
Glass unit is resiliently connected together with metal framework by structure sealant, and structure sealant plays construction bonds, is passed
Pass and undertake the stress of agent structure.
In the long-term use, the mechanical property of the structure sealant after aging, the adhesive property meeting kept with base material
Directly influence the safety and service life of glass curtain wall.Specifically, such as concealed frame glass curtain wall, once its structure sealant
Occur being hardened in use, become fragile, elasticity reduction, conjugate ability to bear deficiency and crack, bonding failure, may result in glass
Breathe freely leak, glass plate of glass curtain wall falls the generations of the accidents such as hurting people or smashing objects, seriously affects people's life and property safety.
Therefore, it is necessary to the performances to the structure glue used in existing curtain wall whether still effectively to make assessment.Existing silicone
Structure sealant check and evaluation method mainly uses destructive testing method, generally divides two methods：One is cut from curtain wall
Part-structure fluid sealant sample is removed, then carrying out sample preparation again in laboratory carries out Mechanics Performance Testing, and this method can not judge
The retainable quality of the caking property of structure sealant and base material.
Another method is to be detected at the scene, applies point loading or face to glass panel with puller system, jack etc.
Load, experiment needs large-scale plant to be difficult to operate, and the force value acted in four side structure glue of glass is inhomogenous, can not effective mould
The stressing conditions that wind load generates structure glue in quasi- practical application, while existing method is mostly to use " rubber tapping " form will be intrinsic
Structure glue cut certain length, later applied force make structure glue continue to destroy, according to structure glue continue destroy assessment of scenario knot
Whether the bonding of structure glue is effective, and this method can not judge that the elasticity of structure sealant conjugates whether ability to bear still has
Effect.
It can be seen that existing method can only be unilateral qualitative evaluation structure glue bonding effectiveness, have certain subjectivity
Judge, can not specify whether evaluation structure glue is effective, and destruction, operability are produced to the structure sealant of normal use
It is not strong.
Invention content
A primary object of the present invention is in the appraisal procedure for providing a kind of structure glue for glass curtain wall, the glass
Curtain wall includes frame and is fixed at least one block of glass to be measured of the frame, and at least one block of glass to be measured passes through the knot
Structure gluing is connected to the frame；The method includes：
Measure the thickness t of the structure glueS；
Apply the active force far from the frame to the glass to be measured；
Measure the displacement ability to bear δ c of the structure glue；And
The minimal design thickness t of the structure glue is calculated according to the displacement ability to bear δ c of the structure glueS, c, if tS,c
Less than or equal to the thickness t of the structure glueS, and the structure glue described in detection process does not have cohesional failure or bond damage,
Then the structure glue is rated as effectively.
According to an embodiment of the present invention, the size of the active force is adjustable, changes the size of the active force, according to
The thickness change of the structure glue under different role power draws load-deformation curve, and the proportionality coefficient of the curve is the knot
The initial stiffness modulus K of structure glue0,C, by the initial stiffness modulus K0,C is with the structure glue before for the glass curtain wall
Initial stiffness modulus K0It is compared, if 0.5≤K0,c/K0≤ 1.5, and the structure glue described in detection process does not have cohesion
Destroy or bond damage, then the structure glue be rated as effectively.
According to an embodiment of the present invention, it is the thickness t in the thickness change of the structure glueS1%, 2%, 3%,
4%, 5% when or when 5%, 10%, 15%, 20%, 25%, the numerical value of corresponding active force is recorded, to be answered described in drafting
Force-strain curve.
According to an embodiment of the present invention, the thickness of the structure glue is measured by displacement measurement component, the displacement is surveyed
The initial displacement reading for measuring component is more than the thickness tS25%.
According to an embodiment of the present invention, the glass to be measured is rectangle, and the glass to be measured is bonded by four edges
In the frame, while measuring the thickness t of the structure glue of the four edgesSAnd displacement ability to bear δ c.
According to an embodiment of the present invention, the rectangle includes two long sides and two short sides, is applied to the work of the long side
Firmly it is equal to the length ratio of the long side and the short side with the ratio for the active force for being applied to the short side.
An embodiment of the present invention provides a kind of detection device of the structure glue for glass curtain wall, the glass curtain wall
Including frame and at least one block of glass to be measured for being fixed on the frame, at least one block of glass to be measured passes through the structure glue
It is adhered to the frame；The wherein described detection device includes：Exert a force component and displacement measurement component, and force component is to described
Glass to be measured applies the active force far from the frame, and displacement measurement component is measuring the thickness of the structure glue.
According to an embodiment of the present invention, the glass to be measured includes first surface and is oppositely arranged with the first surface
Second surface, the force component is set to the first surface, and the frame is set to the second surface, the displacement
Measuring part is set to the frame.
According to an embodiment of the present invention, the force component includes connecting component and force application part；The connecting component
It is set to the first surface, the force application part is set to the connecting component.
According to an embodiment of the present invention, the force application part include supporting rack, the guiding that is set on support frame as described above
Wheel and applies weight at guidance tape, and the guidance tape is wound in the directive wheel, and the connecting component is fixed in one end, and the other end connects
Weight is applied described in connecing；Under the action of the directive wheel, guidance tape, the weight of applying can be by its own gravity to described to be measured
Glass applies the active force far from the frame.
The appraisal procedure of an embodiment of the present invention is not required to destroy the structures such as glass, the structure glue used in existing building curtain wall
Part, you can the validity of existing glass curtain wall structure glue is evaluated.
Description of the drawings
Fig. 1 is the structural schematic diagram of the detection device of the structure glue for glass curtain wall of an embodiment of the present invention；
Fig. 2 is that four sets of detection devices of an embodiment of the present invention are set to the schematic diagram of glass curtain wall.
Specific implementation mode
Embodying the exemplary embodiment of feature of present invention and advantage will describe in detail in the following description.It should be understood that
The present invention can have various variations in different embodiments, neither depart from the scope of the present invention, and theory therein
Bright and diagram inherently is illustrated as being used, rather than to limit the present invention.Wherein, Fig. 1 is the knot of detection device in Fig. 2
Structure schematic diagram is compressed the height of glass 12 to be measured in Fig. 1 for ease of signal.
In the present invention, whether structure glue can effectively be embodied in two aspects：(1) caking property (cementability of structure glue and base material
Can)；(2) elasticity (displacement ability to bear), determines the size of the thickness of structure glue used in curtain wall.Based on this, the present invention one is real
The mode of applying provides a kind of appraisal procedure of structure glue validity, in the condition for not generating destruction to the structure glue of normal use
Under, it can quantify and detect the retainable quality of the mechanical property such as the elasticity of structure glue and judge that the adhesive property of structure glue is protected
The quality held, to which comprehensively whether evaluation structure glue can continue to effectively use.
The size of the structure sealant bonded with glass and metal framework plays an important role to bonding safety, the size packet
Include structure gluing knot width dimensions and structure glue thickness.National regulation has design requirement to corresponding size：
(1) bonds width dimensions size and has with glass panel size, wind load design value and structure glue strength failure criterion
It closes, national regulation will seek same standard value to structure glue strength failure criterion and (only require that structure glue product meets national standard, nothing
By product quality level height), so for a certain glass plate bonding structure glue on fixed a certain building curtain wall, glue
It is fixed to tie width minimum design dimension.
(2) structure glues thickness and structure glue displacement ability to bear, floor elastic displacement angle between floors limit value and glass surface
Plate height is related, for a certain glass plate, floor elastic displacement angle between floors limit value and glass on fixed a certain building curtain wall
Glass panel height is fixed, and structure glue thickness minimum design dimension is different with the difference of structure glue displacement ability to bear.
In an embodiment of the present invention, by the comparison of the actual (real) thickness and minimal design thickness of structure glue, and inspection is combined
The damaged condition of structure glue during survey, assesses the validity of structure glue.In conjunction with Fig. 1,2 pairs of an embodiment of the present invention
The structure glue for glass curtain wall performance estimating method or detection method illustrate, glass curtain wall 10 include 11 He of frame
It is fixed at least one block of glass 12 to be measured of frame 11, at least one block of glass 12 to be measured is adhered to frame 11 by structure glue 20；
The appraisal procedure includes：
The actual (real) thickness t of measurement structure glue 20S；
Apply the active force far from frame 11 to glass 12 to be measured；
The displacement ability to bear δ c of measurement structure glue 20；And
The minimal design thickness t of structure glue 20 is calculated according to the displacement ability to bear δ c of structure glue 20S, c, if tS, c is less than
Equal to the actual (real) thickness t of structure glue 20S, and structure glue 20 does not have cohesional failure or bond damage in detection process, then ties
Structure glue 20 is rated as effectively.
In an embodiment of the present invention, the structure glue 20 for measurement can be silicone structure sealant.
In an embodiment of the present invention, the tension stress that the size of active force is adjusted to structure glue 20 is 0.14N/
mm2, determine the displacement ability to bear δ c of structure glue 20.
In an embodiment of the present invention, ability to bear δ c values are conjugated according to existing glass curtain wall structure glue, it can be under
Formula calculates structure glue minimal design thickness tS,c：
us=θ hg
tsIndicate the adhesive thickness (mm) of structure sealant；
usThe displacement (mm) relative to aluminum alloy frame of glass curtain wall is indicated, when necessary it is also contemplated that temperature change generates
Relative displacement；
θ indicates the lower agent structure story drift limit value (rad) of characteristi cvalue o fwindload effect；
hgThe height (mm) for indicating glass to be measured takes its length of side a or b (long side or short side)；
δ c indicate the displacement ability to bear of structure sealant, and it is 0.14N/mm to take corresponding to its tension stress2When elongation
Rate.
In an embodiment of the present invention, glass curtain wall structure sealant meet it is claimed below be evaluated as still effectively,
Otherwise it is assumed that there are security risks：
A. during the entire process of active force applies structure sealant without cohesional failure or bond damage situation；
B. Glass Curtain Wall Projects structure glue actual (real) thickness tS≥tS,c。
It, can be by individual survey tool, such as graduated scale, vernier caliper etc., directly in an embodiment of the present invention
Measure the thickness t for not applying the structure glue 20 before active forceS；Also can by the way that displacement measurement component is arranged on the frame 11, such as
Displacement meter 30, image instrument etc. are used for the thickness of measurement structure glue 20.
In an embodiment of the present invention, it can show that load-deformation curve carries out the validity of structure glue by measuring
Evaluation, the evaluation and above-mentioned tSAnd tS, the comparison result of c is combined, and can further enhance the accuracy of evaluation result.
Specifically, the appraisal procedure of an embodiment of the present invention may include：
The actual (real) thickness t of measurement structure glue 20S；
Apply adjustable active force far from frame 11 to glass 12 to be measured；
According to the thickness change of different role power lower structure glue 20, load-deformation curve, the proportionality coefficient of the curve are drawn
For the initial stiffness modulus K of structure glue 200,C, and with structure glue 20 for the initial stiffness modulus K before glass curtain wall0It carries out
Compare, if 0.5≤K0,c/K0≤ 1.5, and structure glue 20 does not have cohesional failure or bond damage, then structure in detection process
Glue 20 is effective by Primary Evaluation；
The displacement ability to bear δ c of measurement structure glue 20；And
The minimal design thickness t of structure glue 20 is calculated according to the displacement ability to bear δ c of structure glue 20S, c, if tS, c is less than
Equal to the actual (real) thickness t of structure glue 20S, and structure glue 20 is also not present to bond and break both without cohesional failure in detection process
Bad, then structure glue 20 is rated as effectively.
In an embodiment of the present invention, the active force for being applied to glass 12 to be measured is adjustable, in order to measure not
The thickness value of same-action power lower structure glue 20, draws load-deformation curve, and the maximum value of active force may be configured as silicone structure
Fluid sealant reaches the 0.2N/mm that meets with stresses2。
In an embodiment of the present invention, can the thickness change of structure glue 20 be original depth 1%, 2%, 3%,
4%, 5% when or when 5%, 10%, 15%, 20%, 25%, record the numerical value of corresponding active force, answered with drawing stress-
Varied curve.
In an embodiment of the present invention, pass through displacement measurement component, such as displacement meter 30, the thickness of measurement structure glue 20
Degree, 25% of initial displacement reading more than 20 thickness of structure glue of displacement measurement component.
In an embodiment of the present invention, glass 12 to be measured is rectangle, and four sets of detection devices can be used while detecting length
The behaviour in service of the structure glue of rectangular four edges, so that 20 stress of structure glue on 12 4 side of glass to be measured is uniform.
In an embodiment of the present invention, rectangle includes two long sides and two short sides, is applied to the active force of long side and applies
The ratio for being added on the active force of short side is equal to the length ratio of long side and short side.
In an embodiment of the present invention, it can be applied to glass 12 to be measured using the gravity of counterweight 36 by loading counterweight 36
Add active force, the direction of active force that can correspondingly be adjusted according to specific situation, the size of active force can pass through the weight of load
The weight and quantity of code 36 are adjusted.
In an embodiment of the present invention, when the total weight of counterweight 36 is loaded onto national curtain wall engineering technical specification
The silicone structure sealant design value 0.14N/mm that JGJ102-2003 is required2When, the reading of record corresponding displacement meter 30 is to calculate
Go out the displacement ability to bear δ c of structure glue 20.
Wherein, the maximum weight of load counterweight 36 can be that silicone structure sealant reaches the 0.2N/mm that meets with stresses2(state
Family curtain wall engineering technical specification JGJ102-2003 provides strength failure criterion of the structure glue under wind load or geological process), load
During the entire process of counterweight 36, whether observation structure glue has cohesional failure or bond damage situation.
The appraisal procedure of an embodiment of the present invention, the active force being applied on glass to be measured are loaded by gravity,
In long-term test period, not by power, the extraneous factors such as plant machinery failure are influenced, guarantor that can be continual, lasting
Hold direction and the accuracy of stress.It can be used for existing concealed frame glass curtain wall silicone structure sealant validation checking and assessment, newly
It builds curtain wall construction quality examination and also can refer to the method.
Hereinafter, the detection dress of the appraisal procedure for the validity for the structure glue that can be used for implementing one embodiment of the application
It sets and illustrates.
The detection device of the structure glue for glass curtain wall of an embodiment of the present invention can be used for the scene inspection of structure glue
Survey and efficiency assessment.Under the premise of not destroying glass curtain wall, stress size and the deformation of structure glue can either be detected, again
It can judge the retainable quality of the caking property of structure glue, it is comprehensive according to above-mentioned appraisal procedure to data, phenomenon based on detection
Whether ground evaluation structure fluid sealant can continue to effectively use.
The glass curtain wall detected for example can be existing Concealed glass curtain wall, and as shown in Figure 1, 2, glass curtain wall 10 includes
Frame 11 and at least one block of glass to be measured for being fixed on frame 11, at least one block of glass to be measured are adhered to frame by structure glue 20
11；Wherein detection device includes force component and displacement measurement component, exerts a force component to apply to glass to be measured far from frame
11 adjustable active force；Displacement measurement component to measurement structure glue 20 thickness.
In an embodiment of the present invention, at least one block of glass to be measured may include one block of glass or multiple pieces of glass, such as singly
Piece or multi-disc hollow glass.
It in an embodiment of the present invention, is illustrated with any glass 12 to be measured, glass 12 to be measured includes first surface
The 12a and second surface 12b being oppositely arranged with first surface 12a, force component may be disposed at first surface 12a, and frame 11 is logical
It crosses structure glue 20 and is adhered to second surface 12b, displacement measurement component is set to frame 11.
In an embodiment of the present invention, force component includes connecting component and force application part；Connecting component can directly be set
It is placed in first surface 12a, force application part is set to connecting component.Connecting component for example can be sucker 31, and sucker 31 can be in
Strip can be the combination of one or more.Force application part can be acted on for example, by being set to the link on 31 surface of sucker
Sucker 31, and then apply an active force far from frame 11 to first surface 12a.
It is influenced by above-mentioned active force, the structure glue 20 between frame 11 and glass to be measured 12 can deform upon, position
Shift measurement component can obtain the deformation after deformation and unloading of the structure glue 20 under effect by the thickness of measurement structure glue 20.Position
Shift measurement component for example can be existing displacement meter 30, and displacement meter 30 is securable to frame 11, probe contacts second surface
12b, to measure the thickness for the structure glue 20 being folded between frame 11 and second surface 12b.
In an embodiment of the present invention, force application part applies one and the perpendicular work of glass 12 to be measured to glass 12 to be measured
Firmly.
In an embodiment of the present invention, force application part includes supporting rack 32, directive wheel 33, guidance tape 34 and applies weight.
Wherein, directive wheel 33 is fixed on supporting rack 32, and guidance tape 34 is wound in directive wheel 33, and one end is fixed on connecting component and is for example inhaled
Weight is applied in the link of disk 31, other end connection.Specifically, guidance tape 34 for example can be steel wire.Directive wheel 33 can be by guidance tape
34 are divided into horizontal part and vertical portion, and horizontal part is perpendicular to glass 12 to be measured, end connecting sucker 31；Vertical portion is along vertical side
To setting, weight is applied in end connection.Directive wheel can be passed through by applying the gravity for the vertical portion that weight acts on guidance tape 34 as a result,
33 effect is converted into along active force of the horizontal part direction far from frame 11.
In an embodiment of the present invention, the work for being applied to glass 12 to be measured can be adjusted by adjusting the weight for applying weight
Firmly.Specifically, it may include pallet 35 and at least one counterweight 36 on pallet 35 to apply weight, increase and decrease weight can be passed through
The quantity of code 36 adjusts the quality of single counterweight 36 to adjust the active force for being applied to glass 12 to be measured.
In an embodiment of the present invention, by displacement measurement component and apply weight can simultaneously measurement structure glue 20 thickness
Variation and the size of corresponding active force, and according to the variation of this two numerical value drafting load-deformation curve, it both can be according to being obtained
Initial stiffness modulus variation detection structure glue the retainable quality of mechanical property, and can whether there is or not interior by observation structure glue 20
Poly- destruction or bond damage situation judge the adhesive property of structure glue 20, are preliminarily sentenced to the validity of structure glue 20
It is disconnected.
In an embodiment of the present invention, supporting rack 32 is securable to the glass or other objects adjacent with glass 12 to be measured
On.
In an embodiment, glass 12 to be measured can be rectangle glass, viscous by four edges (two long sides and two short sides)
It is connected to frame 11, to keep testing result more accurate, it is preferable that detection can be carried out at the same time to the four edges of rectangle glass.Such as
Shown in Fig. 2, the strip sucker 31 that four are served as connecting component can be respectively arranged near the four edges of rectangle glass, it is adjacent
Nearly frame 11, and four suckers 31 is made to be respectively parallel to four edges setting；Meanwhile making the junction of force application part and sucker 31
(point of application) is located at the centre position of each edge so that each point of application can be with the point of application on relative edge about rectangular
Center keeps symmetrical, and the contact of the probe of displacement meter 30 on glass 12 to be measured is preferably located at the middle part of the length of side, that is, measures side
The thickness of the structure glue of long near middle, so that in detection process, 20 stress of structure glue of rectangle glass four edges is equal
Even, testing result is more accurate.
Wherein, two opposite set detecting devices can share same supporting rack 32, and supporting rack 32 can be the frame of strip,
The long side or short side setting, both ends that rectangle glass can be parallel to can be fixed on adjacent with glass 12 to be measured upper by sucker 37
Under or left and right glass on.Sucker 37 can be circular magnetic chuck, adsorbable in the glass or other objects adjacent with glass 12 to be measured
On body, it is located proximate to the centre position of 12 long side of glass to be measured or short side, the both sides of frame 11 are located at the point of application.
In an embodiment of the present invention, in the same period, it is applied to the directed force F of long side glassaBe applied to short side
The directed force F of glassbDifference, Fa:Fb=a:B, a, b are respectively long side and the length of short side, can so make 12 4 side of glass to be measured
The born active force of structure glue is impartial so that measurement structure is more accurate.
Progress with reference to specific embodiment to the appraisal procedure of the validity of the structure glue of an embodiment of the present invention
Explanation.
Embodiment
Engineering Projects：According to an embodiment of the present invention method to certain concealed frame glass curtain wall silicone structure sealant into
Row check and evaluation, implementation steps are as follows：
1) one piece of glass panel of the curtain wall is chosen, glass panel size is measured：Length × wide=2000mm × 900mm；
2) vernier caliper or graduated scale measurement structure glue thickness t are usedsFor 10mm；It is 12mm to bond width；
3) the curtain wall engineering design information is inquired, structure glue is being 10% for the displacement ability to bear δ before glass curtain wall,
Initial stiffness modulus k0For 1.4MPa.The displacement components u relative to aluminum alloy frame of glass curtain wall is calculated as followssFor 3.636mm；
us=θ hg
θ indicates the lower agent structure story drift limit value (rad) of characteristi cvalue o fwindload effect；Value is 1/550
hgIndicate the height (mm) of glass to be measured, value 2000；
4) according to δ values and usValue, the structure glue minimal design thickness t before can calculating according to the following formula for glass curtain wallS0For
7.94mm, structure glue actual (real) thickness ts(10mm)≥tS0(7.94mm), it is seen that structure glue meets when initial for glass curtain wall
Design requirement, structure glue are effective.
5) structure glue is calculated by stress 0.14N/mm2When long side need to load counterbalance mass maFor 343kg, short side need to load weight
Code quality mbFor 154kg；Structure glue is calculated by stress 0.20N/mm2When long side need to load counterbalance mass maFor 490kg, short side needs
Load counterbalance mass mbFor 220kg.
6) supporting rack 32 is fixed on the glass adjacent with glass 12 to be measured, by being stepped up counterweight 36, to be measured
The long side and short side of glass 12 apply the active force far from frame 11 respectively, to the four edges of rectangle glass to be measured 12 simultaneously into
Row detection；Measurement is loaded onto structure glue 20 by stress 0.14N/mm2When four edges a1, a2, b1, b2 structure glue thickness change
Respectively 0.44mm, 0.48mm, 0.51mm, 0.58mm；Mean value is 0.50mm, and the displacement ability to bear δ c of structure glue are 0.50/
10=5%.
Measurement is loaded onto structure glue by stress 0.20N/mm2When four edges a1, a2, b1, b2 structure glue thickness change
Respectively 0.68mm, 0.75mm, 0.81mm, 0.72mm；Mean value is 0.74mm, and corresponding strain is 7.4%, while observation structure glue
Without unsticking and cracking phenomena.Similarly being continuously increased with loaded weight records change in displacement data, obtains structure glue by stress
For 0.07N/mm2When it is corresponding strain be 3.1%；Stress is 0.05N/mm2When it is corresponding strain be 2%；Stress is 0.02N/
mm2When it is corresponding strain be 0.9%；
Curve is drawn by the above stress-strain data, calculates initial stiffness modulus K0,C is 2.67, and is existed with structure glue
For the initial stiffness modulus K before glass curtain wall0It is compared, K0,c/K0=1.9.
7) according to δ c values and usValue, can calculate structure glue minimal design thickness t according to the following formulaS, c 11.36mm；
8) it assesses：
A. during the entire process of active force applies observation structure fluid sealant without unsticking and cracking situation (no cohesional failure and
Bond damage situation)；
B. Glass Curtain Wall Projects structure glue actual (real) thickness tS(10mm) ＜ tS,c(11.36mm)；
C. initial stiffness modulus change K0,c/K0=1.9, except 0.5~1.5 range.
Although as it can be seen that structure glue is without cohesional failure or bond damage, the actual (real) thickness of structure glue in detection process
Less than minimal design thickness, in addition, the initial stiffness modulus with structure glue for before glass curtain wall is compared, structure glue is initial
Rigidity module change rate exceeds 50%, therefore assesses the glass curtain wall structure sealant there are security risk, and the later stage must adopt
It takes reinforcing or reprocesses the measures of grade and can continue use.
From above-mentioned case study on implementation can be seen that the method for the present invention be not required to destroy existing building curtain wall used in glass, structure
The components such as glue, you can the validity of existing glass curtain wall structure glue is evaluated.
Unless limited otherwise, term used herein is the normally understood meaning of those skilled in the art.
Embodiment described in the invention is merely for exemplary purpose, not to limit the scope of the invention,
Those skilled in the art can be made within the scope of the invention various other replacements, changes and improvements, thus, the present invention is not limited to
The above embodiment, and be only defined by the claims.
Claims (10)
1. a kind of appraisal procedure of structure glue for glass curtain wall, the glass curtain wall includes frame and is fixed on the frame
At least one block of glass to be measured, at least one block of glass to be measured is adhered to the frame by the structure glue；The method
Including：
Measure the thickness t of the structure glueS；
Apply the active force far from the frame to the glass to be measured；
Measure the displacement ability to bear δ c of the structure glue；And
The minimal design thickness t of the structure glue is calculated according to the displacement ability to bear δ c of the structure glueS, c, if tS, c is less than
Equal to the thickness t of the structure glueS, and the structure glue described in detection process does not have cohesional failure or bond damage, then institute
Structure glue is stated to be rated as effectively.
2. according to the method described in claim 1, the size of the wherein described active force is adjustable, change the big of the active force
It is small, according to the thickness change of the structure glue under different role power, draw load-deformation curve, the proportionality coefficient of the curve
For the initial stiffness modulus K of the structure glue0,C, by the initial stiffness modulus K0, c is with the structure glue for the glass
Initial stiffness modulus K before glass curtain wall0It is compared, if 0.5≤K0,c/K0≤ 1.5, and the structure glue described in detection process
There is no cohesional failure or bond damage, then the structure glue is rated as effectively.
3. according to the method described in claim 2, being wherein the thickness t in the thickness change of the structure glueS1%, 2%,
3%, 4%, 5% when or when 5%, 10%, 15%, 20%, 25%, the numerical value of corresponding active force is recorded, described in drafting
Load-deformation curve.
4. according to the method described in claim 2, wherein measure the thickness of the structure glue by displacement measurement component, institute's rheme
The initial displacement reading of shift measurement component is more than the thickness tS25%.
5. according to the method described in claim 1, the wherein described glass to be measured is rectangle, the glass to be measured passes through four edges
It is adhered to the frame, while measuring the thickness t of the structure glue of the four edgesSAnd displacement ability to bear δ c.
6. according to the method described in claim 5, the wherein described rectangle includes two long sides and two short sides, it is applied to the long side
Active force and be applied to the short side active force ratio be equal to the long side and the short side length ratio.
7. a kind of detection device of structure glue for glass curtain wall, the glass curtain wall includes frame and is fixed on the frame
At least one block of glass to be measured, at least one block of glass to be measured is adhered to the frame by the structure glue；It is wherein described
Detection device includes：
Exert a force component, to apply the active force far from the frame to the glass to be measured；And
Displacement measurement component, to measure the thickness of the structure glue.
8. device according to claim 7, wherein the glass to be measured include first surface and with the first surface phase
To the second surface of setting, the force component is set to the first surface, and the frame is set to the second surface, institute
Displacement measurement component is set to the frame.
9. device according to claim 8, wherein the force component includes connecting component and force application part；The connection
Component is set to the first surface, and the force application part is set to the connecting component.
10. device according to claim 9, wherein the force application part includes supporting rack, is set on support frame as described above
Directive wheel, guidance tape and apply weight, the guidance tape is wound in the directive wheel, and the connecting component is fixed in one end, separately
Weight is applied described in the connection of one end；Under the action of the directive wheel, guidance tape, the weight of applying can be by its own gravity to institute
It states glass to be measured and applies the active force far from the frame.
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