CN101957289A - Method for testing wind load of external thermal insulation system of building - Google Patents
Method for testing wind load of external thermal insulation system of building Download PDFInfo
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- CN101957289A CN101957289A CN 201010274344 CN201010274344A CN101957289A CN 101957289 A CN101957289 A CN 101957289A CN 201010274344 CN201010274344 CN 201010274344 CN 201010274344 A CN201010274344 A CN 201010274344A CN 101957289 A CN101957289 A CN 101957289A
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- insulation system
- thermal insulation
- wind load
- external thermal
- silica
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- 238000009413 insulation Methods 0.000 title claims abstract description 34
- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000741 silica gel Substances 0.000 claims abstract description 20
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 20
- 238000010998 test method Methods 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 5
- 230000001070 adhesive effect Effects 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 229960001866 silicon dioxide Drugs 0.000 claims description 17
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 2
- 229920002379 silicone rubber Polymers 0.000 abstract 2
- 238000005187 foaming Methods 0.000 abstract 1
- 238000009864 tensile test Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 230000004044 response Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229920006389 polyphenyl polymer Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012731 temporal analysis Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 206010057071 Rectal tenesmus Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920000260 silastic Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- 208000012271 tenesmus Diseases 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a method for testing the wind load of an external thermal insulation system of a building. The method comprises the following steps of: cutting a silica gel sponge board into a cubic board block; coating an adhesive on the front and back side surfaces of the cubic block of the silica gel sponge board; uniformly sticking the two side surfaces to the surface of the tested thermal insulation system fixed on a base wall and the surface of a pulling board respectively and tightly compacting, wherein the pulling board is connected with a tension device through a spring; pulling the spring, the pulling board and the cubic block of the silica gel sponge board through the tension device so as to apply tension to the tested thermal insulation system; and testing the wind load by taking the damage of the tested thermal insulation system as the base point. In the method, a flexible tensile intermediate combining the spring and the foaming silicon rubber sponge is adopted, wherein the silicon rubber sponge material has higher strength, tests prove that the tensile strength is over 0.4MPa and thus the material can meet the strength requirement of the tensile test of the conventional external thermal insulation system. Meanwhile, a horizontal tension test method is adopted instead of the vertical tension of the prior art and better meets the practical detection requirements.
Description
Technical field
The present invention relates to a kind of wind load field tests of building trade exterior wall, design a kind of heat-preserving building external thermal insulation system wind load method of testing especially.
Background technology
The factor that influences wind load is a lot, the difference of all kinds of surface conditions in different regions, and the variation of the condition of structure own, the difference of shape, surfaceness etc. all can cause the change of wind load on the structure in the same building thing zones of different.Under wind action, structure will produce certain motion, and this motion can cause the variation of body structure surface blast conversely again, adds influencing each other between the adjacent architectural, all make the quite complexity of determining to become of wind load on the structure.
According to documents and materials, the Wind-load Analysis method mainly contains following 4 kinds of methods.
1) frequency domain analysis: is the blast spectrum by wind speed spectrum or by the blast time-histories that wind tunnel test records through Fourier transform, obtains the dynamic response spectrum according to the transmission of power coefficient then, is obtained the dynamic response of structure through the response spectrum integration by random theory.
2) temporal analysis: the blast time-histories of directly using blast time-histories that wind tunnel test records or computer Simulation calculation to obtain is carried out the wind vibration response time-history analysis to engineering structure, obtain the dynamic response of structure then by Cable Power Computation, the statistical framework dynamic response can obtain Wind Vibration Coefficient.Adopt temporal analysis, can consider the temporal correlation and the structural nonlinear influence of natural wind, and the coupling wind of the reflect structure situation of shaking accurately.
3) wind-tunnel method: because wind has effects such as turbulent flow, vortex come off, not only cause shearing and the effect of toppling, also structural entity is caused the dynamic wave dynamic load, therefore in the design of labyrinth, using the wind tunnel test method is a kind of accuracy method of present wind load design, but also has certain instability.
4) numerical value wind-tunnel technology: numerical value wind-tunnel technology is to utilize Fluid Mechanics Computation (CFD) method to find the solution a kind of new technology of body structure surface wind load by the variation of wind field around the model configuration.This technology is a kind of Structural Wind Engineering research method that grows up the nearly more than ten years, and has formed an emerging Structural Wind Engineering branch gradually---calculate Wind Engineering (CWE).At present, " numerical value wind-tunnel " technology has become one of important directions of Structural Wind Engineering research.
The method of testing of analyzing the External Thermal Insulation System wind load at present mainly is static sponge method, to be the pulling force that hydraulic means produced by a tautness meter impose on the steel anchor clamps with the speed of 10 ± 1mm/min to this method, be delivered in the sample test block through scale board, foam block then, applied force when its main specimen is destroyed, this power is maximum wind load value.In the test process, steel anchor clamps and scale board are fixed, and scale board and foam block bond with bi-component epoxide-resin.
This static state sponge method experiment is simulated actual wind-force flexibility and is acted on the influence that system surfaces causes by adopting flexible material bonding pulling force equipment and heat-insulation system.But the method also exists weak point, and at first the sponge material of this method use is softer, is only applicable in the vertical direction and carries out the wind load test; Secondly the sponge material undercapacity (about 0.1MPa) that should the static state sponge method adopts, be mainly used in the detection of the lower rock wool outer heat preservation system of intensity, and the undercapacity of common sponge material is to implement the wind load simulation test at the higher expansion polyphenyl plate system of intensity, extruded polystyrene board system, polyurethane system.
Summary of the invention
The object of the present invention is to provide a kind of External Thermal Insulation System wind load method of testing, this method of testing has not only overcome in the prior art can not horizontal stretch carry out the drawback of wind load test, and can test the wind load of the higher expansion polyphenyl plate system of intensity, extruded polystyrene board system, polyurethane system etc.
For solving the problems of the technologies described above, described External Thermal Insulation System wind load method of testing, with the silica-gel sponge plate side of cutting into body plate, former and later two sides at silica-gel sponge plate square are smeared tackifier respectively, then these two sides are evenly bondd with the surface of a surface that is fixed on the tested heat-insulation system on the foundation wall and an arm-tie respectively and compress solid; Another surface of described arm-tie is connected with a puller system by equally distributed spring; By puller system pulling spring, arm-tie and silica-gel sponge plate square tested heat-insulation system is applied an outside pulling force, test its wind load as basic point with tested heat-insulation system breakage.
Wherein, described arm-tie is by the speed that draws high loading and the vertical and adhesive surface of maintenance loading direction of 1.5-16.7mm p.s..
Wherein, when tackifier is smeared in former and later two sides of giving silica-gel sponge plate square, earlier clean two sides with gasoline, smear tackifier in another opposite flank again after smearing tackifier and dry a side then, adhesive coating should not too thick and cure under pressure.
Wherein, also be provided with a plurality of displacement transducers in described silica-gel sponge plate square, above-mentioned displacement transducer is evenly distributed in the described silica-gel sponge plate square.
Compared with prior art, External Thermal Insulation System wind load method of testing of the present invention has following advantage:
1, this method adopts the test method of horizontal stretch to substitute vertical stretching of the prior art; More realistic detection needs, because outer heat preservation system need carry out atmospheric exposure test, adopts horizontal stretch directly to carry out the wind load test to the model after the atmospheric exposure test;
2, this method adopts the flexibility stretching mediator that spring and foamed silastic sponge combine; The silicone sponge material is different from common polyurethane sponge material, and it has higher intensity, can reach more than the 0.4MPa through its pulling strengrth of testing and verification, can satisfy the requirement of strength of existing outer heat preservation system tension test.Simultaneously owing to adopt the test method of horizontal stretch, in the flexibility dielectric material unsuitable after, otherwise have the problem of tenesmus, so adopt spring and the mode that the silicone sponge material combines, shortened the thickness of sponge material, the increase spring guarantees flexibility;
3, this method adopts in the multidigit displacement sensor monitoring entire test and systematically destroys situation, tests more accurate; For reflecting the process of system destruction more clearly, on the pulling force panel, evenly be furnished with a plurality of displacement transducers, can systematically destroy situation in the monitoring test process.
Description of drawings
Fig. 1 is the unit construction principle synoptic diagram of External Thermal Insulation System wind load method of testing of the present invention.
Among the figure: 1, tested heat-insulation system, 2, tackifier, 3, the silica-gel sponge plate, 4, arm-tie, 5, spring, 6, puller system.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
External Thermal Insulation System wind load method of testing as shown in Figure 1, with silica-gel sponge plate 3 side's of cutting into body plates, former and later two sides at silica-gel sponge plate 3 squares are smeared tackifier 2 respectively, then these two sides are evenly bondd with the surface of a surface that is fixed on the tested heat-insulation system 1 on the floor and an arm-tie 4 respectively and compress solid; Another surface of described arm-tie 4 is connected with a puller system 6 by equally distributed spring 5; By puller system 6 pulling springs 5, arm-tie 4 and silica-gel sponge plate 3 squares tested warming plate 1 is applied an outside pulling force, destroy with tested heat-insulation system 1 and test its wind load as basic point.
In the test process, sample is considered as destroyed during as if one of following phenomenon of appearance:
1) heat-insulation layer fracture;
2) in the heat-insulation layer or between heat-insulation layer and its protective layer layering appears;
3) protective layer itself is thrown off;
4) heat-insulation layer is pulled out from fixture;
5) mechanical fixed part is extracted from substrate;
6) heat-insulation layer breaks away from from supporting construction.
Puller system 6 is installed in the pulling force framework, provides pulling force by 20t worm and gear lifter, and the 20t pulling force sensor is housed between screw mandrel and tension board.The pulling force frame according to tested warming plate position conveniently adjusted in vertical plane ± 6 °, fit tightly to guarantee both.In described silica-gel sponge plate square, also be provided with a plurality of displacement transducers, the displacement that takes place in the tested heat-insulation system drawing process of instant playback.
More than show and described ultimate principle of the present invention and principal character and advantage thereof.The technology personage of the industry should understand; the present invention is not subjected to the restriction of above-mentioned implementing regulations; that describes in above-mentioned implementing regulations and the instructions just is used to illustrate principle of the present invention; under the prerequisite that does not break away from the principle of the invention and scope; the present invention also can have various changes and modifications, and these changes and improvements all belong in the claimed scope of the invention.
The claimed scope of the present invention defines with appending claims and other equivalent.
Claims (4)
1. External Thermal Insulation System wind load method of testing, it is characterized in that: with the silica-gel sponge plate side of cutting into body plate, former and later two sides at silica-gel sponge plate square are smeared tackifier respectively, then these two sides are evenly bondd with the surface of a surface that is fixed on the tested heat-insulation system on the foundation wall and an arm-tie respectively and compress solid; Another surface of described arm-tie is connected with a puller system by equally distributed spring; By puller system pulling spring, arm-tie and silica-gel sponge plate square tested heat-insulation system is applied an outside pulling force, test its wind load as basic point with tested heat-insulation system breakage.
2. External Thermal Insulation System wind load method of testing according to claim 1 is characterized in that: described arm-tie loads and the vertical and adhesive surface of maintenance loading direction by the speed that draws high of 1.5-16.7mm p.s..
3. External Thermal Insulation System wind load method of testing according to claim 1, it is characterized in that: when smearing tackifier in former and later two sides of giving silica-gel sponge plate square, clean two sides with gasoline earlier, smear tackifier in another opposite flank again after smearing tackifier and dry a side then, adhesive coating should not too thick and cure under pressure.
4. External Thermal Insulation System wind load method of testing according to claim 1 is characterized in that: also be provided with a plurality of displacement transducers in described silica-gel sponge plate square, above-mentioned displacement transducer is evenly distributed in the described silica-gel sponge plate square.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102743443A CN101957289B (en) | 2010-09-07 | 2010-09-07 | Method for testing wind load of external thermal insulation system of building |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102743443A CN101957289B (en) | 2010-09-07 | 2010-09-07 | Method for testing wind load of external thermal insulation system of building |
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| Publication Number | Publication Date |
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| CN101957289A true CN101957289A (en) | 2011-01-26 |
| CN101957289B CN101957289B (en) | 2012-10-31 |
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| CN2010102743443A Expired - Fee Related CN101957289B (en) | 2010-09-07 | 2010-09-07 | Method for testing wind load of external thermal insulation system of building |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749249A (en) * | 2012-06-12 | 2012-10-24 | 浙江亚厦幕墙有限公司 | Method for testing glass ribs of full-glass curtain wall, and device thereof |
| CN112683683A (en) * | 2020-12-24 | 2021-04-20 | 中国建材检验认证集团股份有限公司 | Detection unit and detection device for wind pressure resistance of stone curtain wall |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021460A (en) * | 2007-04-04 | 2007-08-22 | 中国建筑材料科学研究总院 | Detecting equipment and detecting method for metal ceiling system strength |
| CN101470034A (en) * | 2007-12-25 | 2009-07-01 | 昆山双桥传感器测控技术有限公司 | Wind load pressure transducer |
-
2010
- 2010-09-07 CN CN2010102743443A patent/CN101957289B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021460A (en) * | 2007-04-04 | 2007-08-22 | 中国建筑材料科学研究总院 | Detecting equipment and detecting method for metal ceiling system strength |
| CN101470034A (en) * | 2007-12-25 | 2009-07-01 | 昆山双桥传感器测控技术有限公司 | Wind load pressure transducer |
Non-Patent Citations (2)
| Title |
|---|
| 《中华人民共和国国家标准》 20020301 中华人民共和国建设部 建筑结构载荷规范 11-15 1-4 , 1 * |
| 《新型建筑材料》 20070930 李德荣等 风载荷对外墙外保温系统安全性的影响 47-50 1-4 , 2 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749249A (en) * | 2012-06-12 | 2012-10-24 | 浙江亚厦幕墙有限公司 | Method for testing glass ribs of full-glass curtain wall, and device thereof |
| CN102749249B (en) * | 2012-06-12 | 2014-07-30 | 浙江亚厦幕墙有限公司 | Method for testing glass ribs of full-glass curtain wall, and device thereof |
| CN112683683A (en) * | 2020-12-24 | 2021-04-20 | 中国建材检验认证集团股份有限公司 | Detection unit and detection device for wind pressure resistance of stone curtain wall |
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| Publication number | Publication date |
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| CN101957289B (en) | 2012-10-31 |
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Owner name: SHANGHAI CONSTRUCTION SCIENCE RESEARCH INST. Free format text: FORMER OWNER: SHANGHAI BUILDING SCIENCE RESEARCH INSTITUTE CO., LTD. Effective date: 20131008 |
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Effective date of registration: 20131008 Address after: 200032 Shanghai city Xuhui District Wanping Road No. 75 first floor Patentee after: SHANGHAI Research Institute OF BUILDING SCIENCES Address before: 200032 Shanghai city Xuhui District Wanping Road No. 75 Patentee before: SHANGHAI RESEARCH INSTITUTE OF BUILDING SCIENCES (Group) Co.,Ltd. |
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Granted publication date: 20121031 |