CN102704972B - Prestress measuring anchor rod and using method - Google Patents
Prestress measuring anchor rod and using method Download PDFInfo
- Publication number
- CN102704972B CN102704972B CN201210223419.4A CN201210223419A CN102704972B CN 102704972 B CN102704972 B CN 102704972B CN 201210223419 A CN201210223419 A CN 201210223419A CN 102704972 B CN102704972 B CN 102704972B
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- Prior art keywords
- resistance strain
- anchor
- anchor pole
- measuring
- anchor rod
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- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000005259 measurement Methods 0.000 claims description 13
- 239000011435 rock Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000000737 periodic effect Effects 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a prestress measuring anchor rod and a using method. The prestress measuring anchor rod comprises an anchor rod, a nut, a tray, resistance strain sensors, a resistance strain gauge, guide wires, a measuring interface, a protective housing and an end cover, wherein longitudinal grooves are arranged on the two sides of the anchor rod; the resistance strain sensors are arranged inside the grooves; the resistance strain sensors are connected with the measuring interface and the resistance strain gauge by the guide wires in sequence; the measuring interface is arranged inside the protective housing; the protective housing is welded on one end of the anchor rod; the end cover is covered on the protective housing; the anchor rod is provided with threads on the rod body on the end where the protective housing is welded; the rod with threads is assembled with the nut and the tray. The prestress measuring anchor rod has the advantages of convenience in installation and easy operation, can be widely applied to monitoring stress of the pre-stressed anchor rod in such underground engineering fields as water conservancy, traffics, mines and the like.
Description
Technical field
The present invention relates to a kind of device for measuring force, particularly a kind of prestressing force force-measuring anchor stock for geotechnical engineering fields such as mines and using method.
Background technology
Anchor pole is widely used in the geotechnical engineering fields such as coal roadway support, slope reinforcement, tunnel support, in order to study the problem such as the mechanism of action and stressing conditions of anchor pole in above-mentioned engineering, invent force-measuring anchor stock and widely applied in Practical Project, its research etc. that can be used for verifying optimal design parameter, improve construction technology or failure mechanism.If application number is the patent of 02255332.0, disclose a kind of direct-reading tension-measuring anchor rod, in actual use cannot Shi Hanzhang, truly can not reflect the actual loading environment of prestressed anchor in engineering, thus monitoring analysis cannot be carried out to the stress of prestressed anchor.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of structure simple, easy to use can the force-measuring anchor stock of Shi Hanzhang and using method.
For achieving the above object, the present invention adopts following technical proposals:
A kind of prestressing force force-measuring anchor stock, comprises anchor pole, nut, pallet, resistance strain sensor, resistance strain gauge, wire, measurement interface, protecting sheathing, end cap composition; Described anchor pole both sides are provided with longitudinal fluting; In described groove, resistance strain sensor is installed; Being connected with measurement interface and resistance strain gauge successively by wire of described resistance strain sensor; Described measurement interface is arranged in protecting sheathing; Described protecting sheathing is welded on anchor pole one end; Described end cap covers on protecting sheathing; The body of rod that described anchor pole is welded with one end of protecting sheathing is provided with screw thread, and body of rod threaded section is equipped with nut and pallet.
In use, measurement interface is connected with resistance strain gauge, obtains resistance strain sensor initial value by resistance strain gauge; Then force-measuring anchor stock is placed in the boring of rock mass, and is fixed in rock mass by Anchor Agent; Rotating nut is to anchor pole Shi Hanzhang, the torque applied in prefastening torque size simulation Practical Project, resistance strain gauge reading after record prestress application completes, strain value experimentally before and after room calibration result and Shi Hanzhang, measures the axial force thus the prestress application situation obtaining anchor pole under existence conditions in engineering that obtain anchor pole; Meanwhile, periodic monitor in work progress, by the strain variation value of measuring resistance strain transducer and according to calibration result, obtains the load change of prestressed anchor in work progress.
When real work, anchor pole model is selected according to engineering practice, and it is consistent with anchor pole model used in engineering.
The present invention relative to the advantage of prior art is:
(1) the present invention easy for installation, be easy to operation, the underground engineering field such as water conservancy, traffic, mine can be widely used in;
(2) the present invention according to the actual anchor pole selecting model identical of engineering as the body of rod, instead of simple use screw-thread steel, make force-measuring anchor stock have identical physico-mechanical properties with anchor pole used in engineering, survey the stressing conditions that data more can reflect other anchor pole in engineering really;
(3) the present invention possesses the function of Shi Hanzhang, force-measuring anchor stock can be made to be in identical force environment with the prestressed anchor used in engineering, can monitor the prestress application situation of anchor pole under existence conditions in engineering and prestressed anchor loss of prestress and stressed size etc. in use, this is that prior art cannot realize.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the embodiment of the present invention.
Fig. 2 is the use schematic diagram of the embodiment of the present invention.
Marginal data: 1-anchor pole; 2-nut; 3-pallet; 4-resistance strain sensor; 5-wire; 6-measurement interface; 7-protecting sheathing; 8-end cap; 9-resistance strain gauge; 10-Anchor Agent; 11-boring.
Detailed description of the invention
Below in conjunction with the embodiment in accompanying drawing, the present invention is described in further details.
With reference to accompanying drawing 1 and accompanying drawing 2, a kind of prestressing force force-measuring anchor stock, comprises anchor pole 1, nut 2, pallet 3, resistance strain sensor 4, resistance strain gauge 9, wire 5, measurement interface 6, protecting sheathing 7, end cap 8; Described anchor pole 1 both sides are provided with longitudinal fluting; Resistance strain sensor 4 is installed in described longitudinal fluting; Being connected with measurement interface 6 and resistance strain gauge 9 successively by leading 5 lines of described resistance strain sensor 4; Described measurement interface 6 is arranged in protecting sheathing 7; Described protecting sheathing 7 is welded on anchor pole 1 one end; Described end cap 8 covers on protecting sheathing 7; The body of rod that described anchor pole 1 is welded with one end of protecting sheathing 7 is provided with screw thread, and body of rod threaded section is equipped with nut 2 and pallet 3.
In use, measurement interface 6 is connected with resistance strain gauge 9, obtains resistance strain sensor 4 initial value by resistance strain gauge 9; Then prestressing force force-measuring anchor stock is placed in the boring 11 of rock mass, and is fixed in rock mass by Anchor Agent 10; Rotating nut 2 pairs of anchor pole 1 Shi Hanzhang, the torque applied in prefastening torque size simulation Practical Project, resistance strain gauge 9 reading after record prestress application completes, strain value experimentally before and after room calibration result and Shi Hanzhang, measures the axial force thus the prestress application situation obtaining anchor pole under existence conditions in engineering that obtain anchor pole 1; Meanwhile, periodic monitor in work progress, by the strain variation value of measuring resistance strain transducer 4 and according to calibration result, obtains the load change of prestressed anchor in work progress.
As known by the technical knowledge, the present invention can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, with regard to each side, all just illustrating, is not only.Within the scope of the present invention all or be all included in the invention being equal to the change in scope of the present invention.
Claims (1)
1. a using method for prestressing force force-measuring anchor stock, described prestressing force force-measuring anchor stock, comprises anchor pole, nut, pallet, resistance strain sensor, resistance strain gauge, wire, measurement interface, protecting sheathing, end cap; Described anchor pole both sides are provided with longitudinal fluting; In described groove, resistance strain sensor is installed; Being connected with measurement interface and resistance strain gauge successively by wire of described resistance strain sensor; Described measurement interface is arranged in protecting sheathing; Described protecting sheathing is welded on anchor pole one end; Described end cap covers on protecting sheathing; The body of rod that described anchor pole is welded with one end of protecting sheathing is provided with screw thread, and body of rod threaded section is equipped with nut and pallet;
It is characterized in that, step is as follows: in use, is connected by measurement interface with resistance strain gauge, obtains resistance strain sensor initial value by resistance strain gauge; Then force-measuring anchor stock is placed in the boring of rock mass, and is fixed in rock mass by Anchor Agent; Rotating nut is to anchor pole Shi Hanzhang, the torque applied in prefastening torque size simulation Practical Project, resistance strain gauge reading after record prestress application completes, strain value experimentally before and after room calibration result and Shi Hanzhang, measures the axial force thus the prestress application situation obtaining anchor pole under existence conditions in engineering that obtain anchor pole; Meanwhile, periodic monitor in work progress, by the strain variation value of measuring resistance strain transducer and according to calibration result, obtains the load change of prestressed anchor in work progress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210223419.4A CN102704972B (en) | 2012-06-29 | 2012-06-29 | Prestress measuring anchor rod and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210223419.4A CN102704972B (en) | 2012-06-29 | 2012-06-29 | Prestress measuring anchor rod and using method |
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| Publication Number | Publication Date |
|---|---|
| CN102704972A CN102704972A (en) | 2012-10-03 |
| CN102704972B true CN102704972B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210223419.4A Expired - Fee Related CN102704972B (en) | 2012-06-29 | 2012-06-29 | Prestress measuring anchor rod and using method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104272B (en) * | 2013-02-01 | 2015-05-27 | 湖南科技大学 | Lossless dynamic detection device of anchor stock preload and detection method thereof |
| CN113481982A (en) * | 2021-05-31 | 2021-10-08 | 卞婷玉 | Slope reinforcing anchor rod for constructional engineering |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1468168A2 (en) * | 2001-12-31 | 2004-10-20 | The Government of the United States of America, as represented by the Secretary, Department of Health & Human Services | Strain detection in rock bolts |
| CN101004137A (en) * | 2007-01-17 | 2007-07-25 | 马善泉 | Resin anchor bar for measuring force |
| CN201010905Y (en) * | 2007-03-27 | 2008-01-23 | 鞠文君 | Force-measuring anchor stock |
| CN201382830Y (en) * | 2009-04-10 | 2010-01-13 | 中国水电顾问集团华东勘测设计研究院 | Monitoring anchor bar structure |
| CN201852662U (en) * | 2010-10-15 | 2011-06-01 | 淮南矿业(集团)有限责任公司 | Device for measuring relationship between pre-tightening torque and axial force of anchor bolt |
| CN202788894U (en) * | 2012-06-29 | 2013-03-13 | 山东大学 | Prestressing force measuring anchor stock |
-
2012
- 2012-06-29 CN CN201210223419.4A patent/CN102704972B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1468168A2 (en) * | 2001-12-31 | 2004-10-20 | The Government of the United States of America, as represented by the Secretary, Department of Health & Human Services | Strain detection in rock bolts |
| CN101004137A (en) * | 2007-01-17 | 2007-07-25 | 马善泉 | Resin anchor bar for measuring force |
| CN201010905Y (en) * | 2007-03-27 | 2008-01-23 | 鞠文君 | Force-measuring anchor stock |
| CN201382830Y (en) * | 2009-04-10 | 2010-01-13 | 中国水电顾问集团华东勘测设计研究院 | Monitoring anchor bar structure |
| CN201852662U (en) * | 2010-10-15 | 2011-06-01 | 淮南矿业(集团)有限责任公司 | Device for measuring relationship between pre-tightening torque and axial force of anchor bolt |
| CN202788894U (en) * | 2012-06-29 | 2013-03-13 | 山东大学 | Prestressing force measuring anchor stock |
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| Publication number | Publication date |
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| CN102704972A (en) | 2012-10-03 |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Shucai Inventor after: Wang Qi Inventor after: Jiang Bei Inventor after: Wang Dechao Inventor after: Li Weiteng Inventor after: Wang Hongtao Inventor before: Li Shucai Inventor before: Wang Dechao Inventor before: Li Zhi Inventor before: Wang Qi Inventor before: Li Weiteng Inventor before: Wang Hongtao |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI SHUCAI WANG DECHAO LI ZHI WANG QI LI WEITENG WANG HONGTAO TO: LI SHUCAI WANG QI JIANG BEI WANG DECHAO LI WEITENG WANG HONGTAO |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 |