CN102704972A - Prestress measuring anchor rod and using method - Google Patents
Prestress measuring anchor rod and using method Download PDFInfo
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- CN102704972A CN102704972A CN2012102234194A CN201210223419A CN102704972A CN 102704972 A CN102704972 A CN 102704972A CN 2012102234194 A CN2012102234194 A CN 2012102234194A CN 201210223419 A CN201210223419 A CN 201210223419A CN 102704972 A CN102704972 A CN 102704972A
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- resistance strain
- anchor pole
- anchor
- force
- measuring
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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 and method for using that is used for isolith geotechnique journey field, mine.
Background technology
Anchor pole is widely used in coal roadway support, slope reinforcement, tunnel support isolith geotechnique journey field; In order to study problems such as the mechanism of action and the stressing conditions of anchor pole in above-mentioned engineering; Invented force-measuring anchor stock and in actual engineering, obtained extensive application, it can be used for verifying optimal design parameter, improves the research of construction technology or failure mechanism etc.It like application number 02255332.0 patent; A kind of direct-reading force-measuring anchor stock is disclosed; Can't apply prestressing force in actual use, can not truly reflect the actual loading environment of prestressed anchor in the engineering, thereby can't carry out monitoring analysis the stress of prestressed anchor.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, a kind of prestressed force-measuring anchor stock and method for using of applying simple in structure, easy to use is provided.
For realizing above-mentioned purpose, 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, lead, measurement interface, protecting sheathing, end cap composition; Said anchor pole both sides are provided with longitudinal fluting; In the said groove resistance strain sensor is installed; The lead that passes through of said resistance strain sensor is connected with resistance strain gauge with the measurement interface successively; Said measurement interface is installed in the protecting sheathing; Said protecting sheathing is welded on anchor pole one end; Said end cap covers on protecting sheathing; The body of rod that said anchor pole is welded with an end of protecting sheathing is provided with screw thread, and body of rod threaded section is equipped with nut and pallet.
In use, will measure interface and be connected, obtain the resistance strain sensor initial value through resistance strain gauge with resistance strain gauge; Then force-measuring anchor stock is presented in the boring of rock mass, and is fixed in the rock mass through the anchoring agent; Rotating nut applies prestressing force to anchor pole; The torque that is applied in the actual engineering of prefastening torque size simulation; Record prestressing force applies the resistance strain gauge reading after the completion; According to the laboratory calibration result and apply the strain value before and after the prestressing force, the prestressing force of anchor pole applies situation under the existence conditions thereby the axial force that measures anchor pole obtains in the engineering; Simultaneously, periodic monitor in work progress through the strain variation value of measuring resistance strain transducer and according to calibration result, obtains the load size variation of prestressed anchor in work progress.
When real work, the anchor pole model is selected according to the engineering actual conditions, its with engineering in used anchor pole model consistent.
The present invention with respect to the advantage of prior art is:
(1) easy for installation, the easy operating of the present invention can be widely used in underground engineering field such as water conservancy, traffic, mine;
(2) the present invention according to the actual identical anchor pole of model of selecting for use of engineering as the body of rod; Rather than simple use screw-thread steel; Make that used anchor pole has identical physico-mechanical properties in force-measuring anchor stock and the engineering, the data of surveying more can reflect the stressing conditions of other anchor pole in the engineering really;
(3) the present invention possesses and applies prestressed function; Can make the prestressed anchor that uses in force-measuring anchor stock and the engineering be in the identical force environment that receives; Can apply situation and prestressed anchor loss of prestress and stressed size in use etc. to the prestressing force of anchor pole under the existence conditions in the engineering and monitor, this be prior art can't realize.
Description of drawings
Fig. 1 is the overall structure sketch map of the embodiment of the invention.
Fig. 2 is the use sketch map of the embodiment of the invention.
Marginal data: 1-anchor pole; 2-nut; 3-pallet; 4-resistance strain sensor; 5-lead; 6-measurement interface; 7-protecting sheathing; 8-end cap; 9-resistance strain gauge; 10-anchoring agent; 11-boring.
The specific embodiment
Embodiment below in conjunction with in the accompanying drawing explains further details to the present invention.
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, lead 5, measures interface 6, protecting sheathing 7, end cap 8; Said anchor pole 1 both sides are provided with longitudinal fluting; Resistance strain sensor 4 is installed in the said longitudinal fluting; The passing through of said resistance strain sensor 4 lead 5 lines successively with measure interface 6 and be connected with resistance strain gauge 9; Said measurement interface 6 is installed in the protecting sheathing 7; Said protecting sheathing 7 is welded on anchor pole 1 one ends; Said end cap 8 covers on protecting sheathing 7; The body of rod that said anchor pole 1 is welded with an 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, will measure interface 6 and be connected, obtain resistance strain sensor 4 initial values through resistance strain gauge 9 with resistance strain gauge 9; Then the prestressing force force-measuring anchor stock is presented in the boring 11 of rock mass, and is fixed in the rock mass through anchoring agent 10; 2 pairs of anchor poles 1 of rotating nut apply prestressing force; The torque that is applied in the actual engineering of prefastening torque size simulation; Record prestressing force applies resistance strain gauge 9 readings after the completion; According to the laboratory calibration result and apply the strain value before and after the prestressing force, the prestressing force of anchor pole applies situation under the existence conditions thereby the axial force that measures anchor pole 1 obtains in the engineering; Simultaneously, periodic monitor in work progress through the strain variation value of measuring resistance strain transducer 4 and according to calibration result, obtains the load size variation of prestressed anchor in work progress.
Can know that by technological general knowledge the present invention can realize through other the embodiment that does not break away from its spirit or essential feature.Therefore, with regard to each side, all just illustrating, is not only.All within the scope of the present invention or the change in being equal to scope of the present invention all comprised by the present invention.
Claims (2)
1. a prestressing force force-measuring anchor stock is characterized in that: comprise anchor pole, nut, pallet, resistance strain sensor, resistance strain gauge, lead, measurement interface, protecting sheathing, end cap; Said anchor pole both sides are provided with longitudinal fluting; In the said groove resistance strain sensor is installed; The lead that passes through of said resistance strain sensor is connected with resistance strain gauge with the measurement interface successively; Said measurement interface is installed in the protecting sheathing; Said protecting sheathing is welded on anchor pole one end; Said end cap covers on protecting sheathing; The body of rod that said anchor pole is welded with an end of protecting sheathing is provided with screw thread, and body of rod threaded section is equipped with nut and pallet.
2. the method for using of prestressing force force-measuring anchor stock according to claim 1 is characterized in that, step is following: in use, will measure interface and be connected with resistance strain gauge, and obtain the resistance strain sensor initial value through resistance strain gauge; Then force-measuring anchor stock is presented in the boring of rock mass, and is fixed in the rock mass through the anchoring agent; Rotating nut applies prestressing force to anchor pole; The torque that is applied in the actual engineering of prefastening torque size simulation; Record prestressing force applies the resistance strain gauge reading after the completion; According to the laboratory calibration result and apply the strain value before and after the prestressing force, the prestressing force of anchor pole applies situation under the existence conditions thereby the axial force that measures anchor pole obtains in the engineering; Simultaneously, periodic monitor in work progress through the strain variation value of measuring resistance strain transducer and according to calibration result, obtains the load size variation 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 |
Publications (2)
| Publication Number | Publication Date |
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| CN102704972A true CN102704972A (en) | 2012-10-03 |
| CN102704972B CN102704972B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210223419.4A Active CN102704972B (en) | 2012-06-29 | 2012-06-29 | Prestress measuring anchor rod and using method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104272A (en) * | 2013-02-01 | 2013-05-15 | 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 active Active
Patent Citations (7)
| 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 |
| US20050231377A1 (en) * | 2001-12-31 | 2005-10-20 | Sunderman Carl B | Instrumented rock bolt, data logger and user interface system |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104272A (en) * | 2013-02-01 | 2013-05-15 | 湖南科技大学 | Lossless dynamic detection device of anchor stock preload and detection method thereof |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102704972B (en) | 2015-06-10 |
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| 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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Free format text: CORRECT: INVENTOR; FROM: LI SHUCAI WANG DECHAO LI ZHI WANG QI LI WEITENG WANG HONGTAO TO: LI SHUCAIWANG QI JIANG BEI WANG DECHAO LI WEITENG WANG HONGTAO |
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