CN205138412U - Cover to reinforcement thickness gauge ware calibration device - Google Patents
Cover to reinforcement thickness gauge ware calibration device Download PDFInfo
- Publication number
- CN205138412U CN205138412U CN201520699191.5U CN201520699191U CN205138412U CN 205138412 U CN205138412 U CN 205138412U CN 201520699191 U CN201520699191 U CN 201520699191U CN 205138412 U CN205138412 U CN 205138412U
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- China
- Prior art keywords
- layer
- thickness
- cover
- steel bar
- calibration
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model provides a cover to reinforcement thickness gauge ware calibration device, calibration device includes top layer covering material layer, middle reinforcing bar layer and nonmagnetic material layer, nonmagnetic material lays on the layer middle reinforcing bar layer, cover on the middle reinforcing bar layer top layer covering material layer. The utility model provides a cover to reinforcement thickness gauge ware calibration device that the reliability is good, the interference killing feature is higher.
Description
Technical field
The utility model belongs to civil engineering work, atomic energy engineering, oceanographic engineering and machinery manufacturing industry field, especially a kind of thickness of protection tier Calibration of measuring instruments equipment.
Background technology
Existing national standards " concrete structure engineering construction quality accident specification " (GB50204-2002) is behind formally issuing and implementation in 2002; thickness of protection tier detects becomes one of content of mandatory acceptance test in specification, and whether thickness of protection tier testing result is qualified directly determines that whether reinforced concrete structure is qualified already.Because reinforcing bar is wrapped in inside concrete, in order to not damaged concrete, basic electromagnetic method or the radar method of adopting measures thickness of protection tier.The multiple thickness of protection tier surveying instrument based on electromagnetic method or radar method is had thus in market.These surveying instruments need the calibration carrying out meeting standard criterion (act.std is JJF1224-2009 " cover to reinforcement, slab thickness measuring instrument calibrating standard ") and legal calibration before use.Legal calibration standard block is made up of nonmagnetic substance coating and single steel bar.The stability of instrument measured value is only weighed in calibration, but cannot weigh the accuracy of instrument measured value.This is one of Problems existing: calibration was lost efficacy, even if calibrate qualified instrument, it is larger that its measured value departs from thickness of protection tier true value.Problems existing two, measured value is subject to the disturbing factor combined influences such as bar diameter, the distribute spacing of reinforcing bar, the distribution number of plies of reinforcing bar, and the antijamming capability of instrument is uneven, and systematic error is uncertain, and the correction factor of measured value cannot be determined.
Summary of the invention
In order to overcome the deficiency that reliability is poor, antijamming capability is poor of existing thickness of protection tier Calibration of measuring instruments mode, the utility model provides the thickness of protection tier Calibration of measuring instruments equipment that a kind of reliability is good, antijamming capability is higher.
The utility model solves the technical scheme that its technical matters adopts:
A kind of thickness of protection tier Calibration of measuring instruments equipment; described correcting device comprises top layer layer of cover material, middle steel bar layer and layer of non-magnetic material; described layer of non-magnetic material is laid described middle steel bar layer, described middle steel bar layer covers described top layer layer of cover material.
Further, described top layer layer of cover material is plane tempering glassy layer.
Further again, described middle steel bar layer is that single or multiple lift arrangement of reinforcement forms, and arrangement is consistent with the reinforcement manner in simulating reinforced concrete structure.
Further, described layer of non-magnetic material is cotton towels layer.Also other nonmagnetic substances can be adopted.
The beneficial effects of the utility model are mainly manifested in: 1, reliability is good, antijamming capability is higher; 2, actual reinforced concrete arrangement of reinforcement situation and protective layer thickness can be simulated, the correction factor of instrument under different arrangement of reinforcement and protective layer thickness situation can be measured before measuring, thus actual measured value is revised; 3, the precision of thickness of protection tier surveying instrument and the stability of range and measured value can be checked; 4, material source is extensive, and material is cheap.Mature preparation process, product quality can meet the demands.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of thickness of protection tier Calibration of measuring instruments equipment.
Fig. 2 is the exploded view of thickness of protection tier Calibration of measuring instruments equipment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
See figures.1.and.2; a kind of thickness of protection tier Calibration of measuring instruments equipment; described correcting device comprises top layer layer of cover material 1, middle steel bar layer 2 and layer of non-magnetic material 3; described layer of non-magnetic material 3 lays described middle steel bar layer 2, described middle steel bar layer 2 covers described top layer layer of cover material 3.
Further, described top layer layer of cover material 1 is plane tempering glassy layer.
Further again, described middle steel bar layer 2 forms for single or multiple lift arrangement of reinforcement, and arrangement is consistent with the reinforcement manner in simulating reinforced concrete structure.
Further, described layer of non-magnetic material 3 is cotton towels layer.Also other nonmagnetic substances can be adopted.
In the present embodiment, top layer layer of cover material adopts n (n >=6) block plane tempered glass, and area is no less than 300mm × 300mm; Thickness is 5 ± 1mm; Flatness is not more than 0.04mm.N value should simulate actual reinforced concrete structure protective layer thickness, and is averaged by the thickness at vernier caliper measurement top layer cladding material four angles and determine.The advantage of plane tempered glass is adopted to be that material is non magnetic, transparent, effectively can simulate actual reinforced concrete structure protective layer thickness.Middle steel bar layer is single or multiple lift reinforcing bar, the arrangement of reinforcement situation of the actual reinforced concrete structures of parameter simulation such as reinforcing bar type, diameter and spacing, as arranged two-layer reinforcing bar, the main muscle in horizontal one deck reinforcing bar simulating reinforced concrete structure, for the deformed bar of diameter 20mm, bar spacing is 50mm; Stirrup in vertical one deck reinforcing bar simulating reinforced concrete structure, be the plain bar of diameter 10mm, bar spacing is 70mm.Layer of non-magnetic material adopts cotton towels, has antiskid function and rough leveling effect.Data are had to show; certain domestic equipment is under the calibration mode (legal calibration) of single steel bar; when setting protective layer thickness is 40mm; instrument indicating value is 40mm; namely error (instrument indicating value-setting protective layer thickness) is 0mm, under the pattern of above-mentioned two-layer reinforcing bar, and measured value and set the error of protective layer thickness as+3mm; under the reinforced concrete structure entity of same two-layer reinforcing bar, the error of measured value and entity structure protective layer thickness is+3mm.If go to calculate entity structure protective layer thickness with the error of single steel bar (0mm), then will cause the protective layer thickness estimated value instrument indicating value-error of entity structure) distortion.If the error measured with this correcting device (3mm) goes to calculate the protective layer thickness of entity structure, then estimated value can the protective layer thickness of reaction entity structure strictly according to the facts.
Claims (4)
1. a thickness of protection tier Calibration of measuring instruments equipment; it is characterized in that: described correcting device comprises top layer layer of cover material, middle steel bar layer and layer of non-magnetic material; described layer of non-magnetic material is laid described middle steel bar layer, described middle steel bar layer covers described top layer layer of cover material.
2. thickness of protection tier Calibration of measuring instruments equipment as claimed in claim 1, is characterized in that: described top layer layer of cover material is plane tempering glassy layer.
3. thickness of protection tier Calibration of measuring instruments equipment as claimed in claim 1 or 2, is characterized in that: described middle steel bar layer is that single or multiple lift arrangement of reinforcement forms, and arrangement is consistent with the reinforcement manner in simulating reinforced concrete structure.
4. thickness of protection tier Calibration of measuring instruments equipment as claimed in claim 1 or 2, is characterized in that: described layer of non-magnetic material is cotton towels layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520699191.5U CN205138412U (en) | 2015-09-10 | 2015-09-10 | Cover to reinforcement thickness gauge ware calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520699191.5U CN205138412U (en) | 2015-09-10 | 2015-09-10 | Cover to reinforcement thickness gauge ware calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205138412U true CN205138412U (en) | 2016-04-06 |
Family
ID=55624198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520699191.5U Expired - Fee Related CN205138412U (en) | 2015-09-10 | 2015-09-10 | Cover to reinforcement thickness gauge ware calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205138412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411316A (en) * | 2019-07-30 | 2019-11-05 | 国网山东省电力公司经济技术研究院 | A kind of project of transmitting and converting electricity thickness of protection tier detection auxiliary device |
-
2015
- 2015-09-10 CN CN201520699191.5U patent/CN205138412U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411316A (en) * | 2019-07-30 | 2019-11-05 | 国网山东省电力公司经济技术研究院 | A kind of project of transmitting and converting electricity thickness of protection tier detection auxiliary device |
| CN110411316B (en) * | 2019-07-30 | 2021-04-06 | 国网山东省电力公司经济技术研究院 | Power transmission and transformation engineering steel bar protective layer thickness detection auxiliary device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20160910 |