CN203420371U - Intelligent-monitoring maintenance-free buckling-restrained brace with piezoelectric composite sensing layers - Google Patents
Intelligent-monitoring maintenance-free buckling-restrained brace with piezoelectric composite sensing layers Download PDFInfo
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- CN203420371U CN203420371U CN201320523063.6U CN201320523063U CN203420371U CN 203420371 U CN203420371 U CN 203420371U CN 201320523063 U CN201320523063 U CN 201320523063U CN 203420371 U CN203420371 U CN 203420371U
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- sensing layer
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- electricity composite
- gfrp
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- 239000002131 composite material Substances 0.000 title claims abstract description 57
- 238000012544 monitoring process Methods 0.000 title claims abstract description 13
- 239000010410 layer Substances 0.000 claims abstract description 63
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 239000006260 foam Substances 0.000 claims abstract description 10
- 239000003822 epoxy resin Substances 0.000 claims abstract description 5
- 239000011229 interlayer Substances 0.000 claims abstract description 5
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 5
- 239000004744 fabric Substances 0.000 claims abstract description 4
- 102100040287 GTP cyclohydrolase 1 feedback regulatory protein Human genes 0.000 claims description 31
- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 claims description 31
- 239000011521 glass Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 abstract description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 3
- 230000005540 biological transmission Effects 0.000 abstract 2
- 238000005452 bending Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006735 deficit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses an intelligent-monitoring maintenance-free buckling-restrained brace with piezoelectric composite sensing layers. The intelligent-monitoring maintenance-free buckling-restrained brace comprises an energy dissipation steel core, a GFRP-restrained section, wave-shaped knots, contoured foam, a sensing layer data transmission line and the piezoelectric composite sensing layers. The wave-shaped knots are arranged at the two ends of the GFRP-restrained section, the energy dissipation steel core is arranged in the center inside the GFRP-restrained section and the centers inside the wave-shaped knots, the GFRP-restrained section is arranged in a symmetric mode along the energy dissipation iron core, the piezoelectric composite sensing layers are located in the GFRP-restrained section and arranged on the two long sides of the energy dissipation iron core in parallel, gaps exist between the piezoelectric composite sensing layers and the energy dissipation iron core, the piezoelectric composite sensing layers are connected with the sensing layer data transmission line, the contoured foam is filled into a gap of an integrated structure formed by connecting the piezoelectric composite sensing layers and the GFRP-restrained section, and each piezoelectric composite sensing layer is composed of a piezoelectric intelligent interlayer, glass fiber cloth and epoxy resin.
Description
Technical field
The utility model relates to a kind of buckling restrained brace technology, is specifically related to the non-maintaining buckling restrained brace of a kind of piezo-electricity composite material sensing layer intellectual monitoring.
Background technology
Existing buckling restrained brace can improve the dynamic characteristics of works preferably, improves its antivibration or anti-seismic performance.But existing support adopts passive type restriction mode, cannot know the duty of support, the damage status of support can not be described.
Utility model content
The purpose of this utility model is cannot reflect for existing buckling restrained brace the defect of self duty, proposes a kind of Novel steel-composite material buckling restrained brace with intellectual monitoring function.
The technical solution adopted in the utility model is: the non-maintaining buckling restrained brace of a kind of piezo-electricity composite material sensing layer intellectual monitoring, comprise power consumption steel core, GFRP confinement section, waveform joint, contoured foam, sensing layer data line and piezo-electricity composite material sensing layer, the two ends of described GFRP confinement section are provided with waveform joint, the inside center of GFRP confinement section and waveform joint is provided with power consumption steel core, GFRP confinement section is arranged symmetrically with along power consumption steel core, described piezo-electricity composite material sensing layer is positioned at GFRP confinement section, piezo-electricity composite material sensing layer is set in parallel in the both sides, long limit of power consumption steel core, between piezo-electricity composite material sensing layer and power consumption steel core, leave gap, piezo-electricity composite material sensing layer is connected with sensing layer data line, piezo-electricity composite material sensing layer and GFRP confinement section are connected to form in integrally-built space and are filled with contoured foam, described piezo-electricity composite material sensing layer is by piezoelectric intelligent interlayer, glass fabric and epoxy resin form.
As preferably, described power consumption steel core end is welded with two stiffening ribs, forms junction plate, is provided with the bolt hole being connected with structure node plate above.
The utility model passes through integral forming technique, piezo-electricity composite material layer and GFRP confinement section form an integral body, piezo-electricity composite material sensing layer and GFRP confinement section parcel contoured foam, contoured foam is the mould of GFRP confinement section and piezo-electricity composite material sensing layer in integral forming technique, in piezo-electricity composite material sensing layer, draw wire as sensing layer data line, power consumption steel core is arranged in GFRP confinement section and the piezo-electricity composite material sensing layer being arranged symmetrically with.
Beneficial effect: the utility model utilizes the duty of the monitoring power consumption steel core of piezo-electricity composite material sensing layer, and then explanation support works performance and degree of impairment.Piezo-electricity composite material sensing layer is become with epoxy resin by glass fiber, piezoelectric intelligent interlayer, close with GFRP composite constraining section composition, adopt integral forming technique, once can complete the making of sensing layer and confinement section, simple and effective, the overall corrosion resistance of formation is good.The utility model is innovated from structural form and the sensor material aspect of buckling restrained brace, have rational in infrastructure, from heavy and light, corrosion-resistant, non-maintaining, feature that can intelligent monitoring.Novel buckling restrained brace, except having the vibratory response (as earthquake, wind shake etc.) that reduces building structure, plays outside the advantage of vibration damping (shake) protective effect, also possesses the advantage that duty is known, degree of impairment can be looked into, and is a kind of novel intelligent structural element.
Accompanying drawing explanation
Fig. 1 is that the utility model supports overall structure schematic diagram;
Fig. 2 is the utility model supporting section schematic diagram;
Fig. 3-7 are buckling restrained brace deformation mechanisms figure.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As illustrated in fig. 1 and 2, the non-maintaining buckling restrained brace of a kind of piezo-electricity composite material sensing layer intellectual monitoring, comprise power consumption steel core 1, GFRP confinement section 2, waveform joint 3, contoured foam 4, sensing layer data line 5 and piezo-electricity composite material sensing layer 6, the two ends of described GFRP confinement section 2 are provided with waveform joint 3, the inside center of GFRP confinement section 2 and waveform joint 3 is provided with power consumption steel core 1, GFRP confinement section 2 is arranged symmetrically with along power consumption steel core 1, described piezo-electricity composite material sensing layer 6 is positioned at GFRP confinement section 2, piezo-electricity composite material sensing layer 6 is set in parallel in the both sides, long limit of power consumption steel core 1, between piezo-electricity composite material sensing layer 6 and power consumption steel core 1, leave gap, piezo-electricity composite material sensing layer 6 is connected with sensing layer data line 5, piezo-electricity composite material sensing layer 6 and GFRP confinement section 2 are connected to form and in integrally-built space, are filled with contoured foam 4, described piezo-electricity composite material sensing layer 6 is by piezoelectric intelligent interlayer, glass fabric and epoxy resin form.Described power consumption steel core 1 end is welded with two stiffening ribs, forms junction plate, is provided with the bolt hole being connected with structure node plate above.
The operating principle of the utility model buckling restrained brace is:
During buckling restrained brace work, power consumption steel core and outside GFRP confinement section and piezo-electricity composite material sensing layer are done as a whole stressed, but than power consumption steel core stress unit, waveform joint axial rigidity is less, axle power is assigned to outside GFRP confinement section and piezo-electricity composite material sensing layer seldom, supports the axial push-pull power of bearing and can be considered completely and is born by power consumption steel core stress unit.Power consumption steel core stress unit can reach surrender when tension; During pressurized, suppose that supporting suffered primitive axis power is P, as shown in Figure 3, power consumption steel core stress unit produces lateral deformation, first the position of power consumption steel core stress unit sidesway maximum contacts with piezo-electricity composite material sensing layer, power consumption steel core stress unit reaches lowest-order buckling mode, and as shown in Figure 4, now GFRP confinement section and piezo-electricity composite material sensing layer bend; Increase along with axle power, the lateral deformation of power consumption steel core stress unit increases, the development of being out of shape on contact point due to the constrained power consumption steel core stress unit of GFRP confinement section and piezo-electricity composite material sensing layer, power consumption steel core stress unit will develop to high-order buckling mode, as shown in Fig. 5-7, GFRP confinement section and the flexural deformation of piezo-electricity composite material sensing layer increase thereupon.So development is gone down, as long as GFRP confinement section and Intelligent carbon fiber sensing layer have enough bending rigidities, support that suffered axle power can increase always until the steel core stress unit that consumes energy reaches total cross-section surrender, now GFRP confinement section and the piezo-electricity composite material sensing layer destruction that do not bend.
Piezo-electricity composite material signal antijamming capability is strong, be swift in response, response band is wide, can possess the function of driver and sensor simultaneously, at monitoring structural health conditions and damage identification, plays a significant role.Piezo-electricity composite material sensing layer has good sensing characteristics, and its output voltage presents obvious one-to-one relationship with input load, and basic synchronization, does not have hysteresis.
While consuming energy steel core bending deformation in supporting, the voltage signal of piezo-electricity composite material sensing layer has reflected the strain level of GFRP confinement section and piezo-electricity composite material sensing layer, in conjunction with steel-composite material buckling restrained brace Bearing capacity model, just can be obtained by the strain of piezo-electricity composite material sensing layer the bending deformation of power consumption steel core, the flexing duty of reflection power consumption steel core.Power consumption steel core duty can reflect service condition and the integrality supporting.
It should be pointed out that for those skilled in the art, not departing under the prerequisite of the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.In the present embodiment not clear and definite each ingredient all available prior art realized.
Claims (2)
1. the non-maintaining buckling restrained brace of piezo-electricity composite material sensing layer intellectual monitoring, it is characterized in that: comprise power consumption steel core, GFRP confinement section, waveform joint, contoured foam, sensing layer data line and piezo-electricity composite material sensing layer, the two ends of described GFRP confinement section are provided with waveform joint, the inside center of GFRP confinement section and waveform joint is provided with power consumption steel core, GFRP confinement section is arranged symmetrically with along power consumption steel core, described piezo-electricity composite material sensing layer is positioned at GFRP confinement section, piezo-electricity composite material sensing layer is set in parallel in the both sides, long limit of power consumption steel core, between piezo-electricity composite material sensing layer and power consumption steel core, leave gap, piezo-electricity composite material sensing layer is connected with sensing layer data line, piezo-electricity composite material sensing layer and GFRP confinement section are connected to form in integrally-built space and are filled with contoured foam, described piezo-electricity composite material sensing layer is by piezoelectric intelligent interlayer, glass fabric and epoxy resin form.
2. the non-maintaining buckling restrained brace of piezo-electricity composite material sensing layer intellectual monitoring according to claim 1, is characterized in that: described power consumption steel core end is welded with two stiffening ribs, forms junction plate, is provided with the bolt hole being connected with structure node plate above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320523063.6U CN203420371U (en) | 2013-08-26 | 2013-08-26 | Intelligent-monitoring maintenance-free buckling-restrained brace with piezoelectric composite sensing layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320523063.6U CN203420371U (en) | 2013-08-26 | 2013-08-26 | Intelligent-monitoring maintenance-free buckling-restrained brace with piezoelectric composite sensing layers |
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| Publication Number | Publication Date |
|---|---|
| CN203420371U true CN203420371U (en) | 2014-02-05 |
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|---|---|---|---|
| CN201320523063.6U Expired - Lifetime CN203420371U (en) | 2013-08-26 | 2013-08-26 | Intelligent-monitoring maintenance-free buckling-restrained brace with piezoelectric composite sensing layers |
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| CN (1) | CN203420371U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422586A (en) * | 2013-08-26 | 2013-12-04 | 南京工业大学 | Intelligent monitoring maintenance-free buckling restrained brace for piezoelectric composite material sensing layer |
-
2013
- 2013-08-26 CN CN201320523063.6U patent/CN203420371U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422586A (en) * | 2013-08-26 | 2013-12-04 | 南京工业大学 | Intelligent monitoring maintenance-free buckling restrained brace for piezoelectric composite material sensing layer |
| CN103422586B (en) * | 2013-08-26 | 2015-07-01 | 南京工业大学 | Intelligent monitoring maintenance-free buckling restrained brace for piezoelectric composite material sensing layer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140205 Effective date of abandoning: 20150701 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140205 Effective date of abandoning: 20150701 |
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| RGAV | Abandon patent right to avoid regrant |