CN201653606U - Strain force-measuring steel plate - Google Patents
Strain force-measuring steel plate Download PDFInfo
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- CN201653606U CN201653606U CN201020161816XU CN201020161816U CN201653606U CN 201653606 U CN201653606 U CN 201653606U CN 201020161816X U CN201020161816X U CN 201020161816XU CN 201020161816 U CN201020161816 U CN 201020161816U CN 201653606 U CN201653606 U CN 201653606U
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Abstract
The utility model relates to a strain force-measuring steel plate, which is particularly applicable to measuring counter force of supports at supporting positions of large-sized aqueducts, large-sized highway bridges, railway bridges and other large-sized aerial structures. The strain force-measuring steel plate comprises a steel plate, strain holes are drilled on one surface of the steel plate, resistance strain gauges are arranged on side walls of the strain holes, lead slots or lead holes are disposed on the steel plate corresponding to the strain holes, leads connected with the resistance strain gauges are laid in the lead slots or lead holes, and epoxy resin is filled in the strain holes and the lead slots or lead holes. The strain force-measuring steel plate has the following advantages that 1, the strain force-measuring steel plate resolves technical difficult problems of counter force monitoring of supports of large-sized aqueducts, bridges and aerial buildings, 2, the strain force-measuring steel plate is simple and firm in structure, convenient in use and mounting, low in manufacturing cost, high in detection precision and low in error, and can be directly used for measuring and monitoring actual stress conditions of large-tonnage loads on foundations of buildings, and 3, the strain force-measuring steel plate can monitor the whole process of counter forces of supports under conditions of heavy loads for a long time.
Description
Technical field
The utility model relates to a kind of strain-type force steel plate, is specially adapted to the measurement of large-sized aqueduct, large-scale vehicular bridge, railway bridge and other large-scale aerial construction supporting place end reactions.
Background technology
At present, all kinds of large-sized aqueducts, vehicular bridge, railway bridge and other large-scale aerial construction engineerings are increasing, these large-scale built on stilts buildingss are at construction and installation and run duration, must make beam, plate in place accurately, require closely to contact with each bearing, must not come to nothing, and should make each bearing all evenly bear identical gravity as far as possible.Therefore, during the crossbeam construction installation and operation, tackle the actual loading situation of each bearing and measure and monitor.
In the prior art, measuring aqueduct or bridge pad counter-force mainly adopts the methods such as distortion of jacking equipment or measurement rubber slab to measure.Shortcoming with lifting jack dynamometry mode is: crossbeam fulcrum place produces perpendicular displacement, makes the bearing reaction redistribution, and actual counter-force that can not representative structure can not long term monitoring; When the temperature influence crossbeam produced distortion, lifting jack can not adapt to displacement, and measuring error is big.Shortcoming that adopt to measure the rubber slab deformation method is: measured pressure value intuitively, the conversion pressure error is big.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency that exists at above-mentioned prior art and provide a kind of simple in structure, easy to use and measure accurate strain-type force steel plate.
The utility model is that the technical scheme that problem adopted of the above-mentioned proposition of solution is: comprise steel plate, on a face of steel plate, be drilled with strain bore, the strain bore sidewall is by being provided with resistance strain gage, corresponding each strain bore is offered lead-in wire groove or fairlead on steel plate, lay the lead that joins with resistance strain gage in lead-in wire groove or the fairlead, equal filling epoxy resin in strain bore, lead-in wire groove or the fairlead.
Press such scheme, be drilled with at steel plate on the one side of strain bore and be pasted with polyfluortetraethylene plate.
Press such scheme, described steel plate is circular or square, and described strain bore is a cylindrical hole, and strain bore is provided with 4～9, and one of them is laid in the position, center (center of circle) of steel plate, all the other strain bores be distributed on apart from center one end distance from circumference on.
Press such scheme, described steel plate thickness of slab is 30～60mm, and the strain bore hole depth is 2/3 of a steel plate thickness.
Press such scheme, described lead-in wire groove or fairlead radially distribute, and extend to the steel plate circumferential lateral surface from strain bore beginning.
Press such scheme, in a strain bore, be installed on resistance-type or semiconductor-type thermometer.
Press such scheme, described resistance strain gage thermal expansivity is identical with the steel plate thermal expansivity or close, and is bonding with bonding agent and strain bore sidewall.
When the utility model uses; with the strain-type force steel plate as the middle steel plate of pot rubber bearing or utilize the middle steel plate of pot rubber bearing to carry out preprocessing; follow procedure is installed on the rubber slab of pot bearing before crossbeam sets up; under the corrosion resistant plate; and will draw lead and be numbered and protect; set up when superstructure and to finish or at run duration; under the upper load effect; the strain-type force steel plate will bear corresponding pressure; under pressure; be adsorbed on the foil gauge resistor random-access tool distortion on the steel matrix and produce change in resistance; mechanical quantity is converted to electric signal; calculate the average compressive stress of steel plate by electric signal, thereby calculate the force value of steel plate installation place bearing.When having ready conditions, also can carry out indoor standardization to the strain-type steel plate in advance, directly obtain the relation curve of upper load and strain, and with this determine or calculate bearing the actual pressure that bears.When each the measurement, also tackle resistance thermometer and survey and read, so that proofread and correct the influence that steel plate is subjected to temperature stress.
The utility model has been obtained following beneficial effect: 1. the technical barrier that has solved each the end reaction monitoring of large-sized aqueduct, bridge and built on stilts buildings; 2. simple in structure firm, easy to install and use, low cost of manufacture, the accuracy of detection height, error is little, can be directly used in the actual loading situation of measuring and monitoring the large-tonnage load on the buildings pedestal; 3. can provide the end reaction under the heavy loading condition is carried out the long-term monitoring of overall process.
Description of drawings
Fig. 1 is the vertical view of an embodiment of the utility model.
Fig. 2 is the positive view of an embodiment of the utility model.
Embodiment
Further specify specific embodiment of the utility model below in conjunction with accompanying drawing.Comprise a circular steel plate 1, the steel plate thickness of slab is 30～60mm, and diameter is 30～120cm, and its top and bottom are shiny surface; Be drilled with 5 strain bores 2 on a face of steel plate, wherein 1 strain bore is positioned at the position, center (center of circle) of circular steel plate, and all the other 4 strain bores circumferentially are distributed on the circumference of center 1/2 radius distance; The aperture is 12～20mm, and hole depth is 2/3 of a steel plate thickness, and the strain bore sidewall is pasted with single shaft resistance strain gage 4, and the resistance strain gage thermal expansivity is consistent with the steel plate thermal expansivity, and is bonding with cyano group acrylic acid salt bonding agent or other special bonding agent; Resistance strain gage operating temperature range-196～+ 120 ℃, self-temperature compensating under the normal temperature ± 1.0 * 10
-6/ ℃, deformation limit 5%, strain length of a film 10～30mm, resistance 60～1000 Ω; And in a strain bore 1 resistance thermometer 8 is installed therein, the thermometer precision is 0.5 ℃; Corresponding each strain bore is the radially radial lead-in wire groove 3 of offering on the steel plate face, lead-in wire groove groove width 2～4mm, groove depth 3～4mm, the lead-in wire groove extends to the steel plate circumferential lateral surface from strain bore beginning, in each aperture 2 single shaft resistance strain gage 4 is installed, foil gauge is paper tinsel metal strain plate or other types foil gauge, and its thermal expansivity is consistent with the steel plate thermal expansivity, and is bonding with cyano group acrylic acid salt bonding agent or other special bonding agent; Foil gauge operating temperature range-196～+ 120 ℃, self-temperature compensating under the normal temperature ± 1.0 * 10
-6/ ℃, deformation limit 5%, strain length of a film 10～30mm, resistance 60～1000 Ω; And in a hole 1 resistance thermometer 8 is installed therein, the thermometer precision is 0.5 ℃; The lead 5 of each resistance strain gage 4 and resistance thermometer 8 is drawn in groove from each lead-in wire, all is full of epoxy resin 6 in strain bore and the lead-in wire groove, and is drilled with at steel plate on the one side of strain bore and is pasted with polyfluortetraethylene plate 7.
Claims (8)
1. strain-type force steel plate, it is characterized in that comprising steel plate, on a face of steel plate, be drilled with strain bore, the strain bore sidewall is by being provided with resistance strain gage, corresponding each strain bore is offered lead-in wire groove or fairlead on steel plate, lay the lead that joins with resistance strain gage in lead-in wire groove or the fairlead, equal filling epoxy resin in strain bore, lead-in wire groove or the fairlead.
2. by the described strain-type force steel plate of claim 1, it is characterized in that on steel plate is drilled with the one side of strain bore, being pasted with polyfluortetraethylene plate.
3. by claim 1 or 2 described strain-type force steel plates, it is characterized in that described steel plate for circular or square, described strain bore is a cylindrical hole, and strain bore is provided with 4～9, one of them is laid in the centre bit of steel plate, all the other strain bores be distributed on apart from center one end distance from circumference on.
4. by claim 1 or 2 described strain-type force steel plates, it is characterized in that described steel plate thickness of slab is 30～60mm, the strain bore hole depth is 2/3 of a steel plate thickness.
5. by claim 1 or 2 described strain-type force steel plates, it is characterized in that described lead-in wire groove or fairlead radially distribute, extend to the steel plate circumferential lateral surface from the strain bore beginning.
6. by claim 1 or 2 described strain-type force steel plates, it is characterized in that in a strain bore, being installed on resistance-type or semiconductor-type thermometer.
7. by claim 1 or 2 described strain-type force steel plates, it is characterized in that described resistance strain gage thermal expansivity is identical with the steel plate thermal expansivity or close, bonding with bonding agent and strain bore sidewall.
8. by the described strain-type force steel plate of claim 3, it is characterized in that described steel plate for circular, diameter is 30～120cm, and its top and bottom are shiny surface; Be drilled with 5 strain bores on a face of steel plate, wherein 1 strain bore is positioned at the centre bit of circular steel plate, and all the other 4 strain bores circumferentially are distributed on the circumference of center 1/2 radius distance; The aperture is 12～20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020161816XU CN201653606U (en) | 2010-04-12 | 2010-04-12 | Strain force-measuring steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020161816XU CN201653606U (en) | 2010-04-12 | 2010-04-12 | Strain force-measuring steel plate |
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| Publication Number | Publication Date |
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| CN201653606U true CN201653606U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020161816XU Expired - Lifetime CN201653606U (en) | 2010-04-12 | 2010-04-12 | Strain force-measuring steel plate |
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| CN (1) | CN201653606U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454027A (en) * | 2013-09-16 | 2013-12-18 | 北京机械设备研究所 | Dynamic pressure measuring device based on pressure difference |
| CN103868947A (en) * | 2014-03-31 | 2014-06-18 | 孙东生 | Measurement method and measurement device for 0-60 DEG C rock linear thermal expansion coefficient |
| CN108168775A (en) * | 2017-12-28 | 2018-06-15 | 广州引航者信息科技有限公司 | A kind of force sensing resistance tester |
-
2010
- 2010-04-12 CN CN201020161816XU patent/CN201653606U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454027A (en) * | 2013-09-16 | 2013-12-18 | 北京机械设备研究所 | Dynamic pressure measuring device based on pressure difference |
| CN103868947A (en) * | 2014-03-31 | 2014-06-18 | 孙东生 | Measurement method and measurement device for 0-60 DEG C rock linear thermal expansion coefficient |
| CN108168775A (en) * | 2017-12-28 | 2018-06-15 | 广州引航者信息科技有限公司 | A kind of force sensing resistance tester |
| CN108168775B (en) * | 2017-12-28 | 2020-06-12 | 马卫富 | Force sensitive resistance tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
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| CX01 | Expiry of patent term |