CN209687518U - A kind of adjustable simulation test anchor pole of prestressing force - Google Patents
A kind of adjustable simulation test anchor pole of prestressing force Download PDFInfo
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- CN209687518U CN209687518U CN201920221851.7U CN201920221851U CN209687518U CN 209687518 U CN209687518 U CN 209687518U CN 201920221851 U CN201920221851 U CN 201920221851U CN 209687518 U CN209687518 U CN 209687518U
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- anchor
- bar body
- anchorage head
- prestressing force
- anchor pole
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Abstract
The utility model provides a kind of adjustable simulation test anchor pole of prestressing force, it is related to bolt simulation experimental technique field, structure includes anchor bar body, anchorage head, loading plate, Minitype jack, backing plate, nut, liquid injection pipe and topping-up pump, the anchored end of anchor bar body is provided with anchorage head, the anchored end of anchor bar body is in coniform, anchorage head side offers tensioning seam, loading plate is arranged in anchor pole exposed junction side, pressure is equipped with nut on backing plate, anchor bar body sequentially passes through loading plate, Minitype jack and backing plate, jack connects topping-up pump by liquid injection pipe, digital display manometer is provided on liquid injection pipe.It when carrying out simulation test using the anchor pole, drills on similar material model first, then connects anchor rod prestress simulation laboratory test system, pretightning force is applied by topping-up pump, and read and adjust according to digital display manometer, complete test.It is inconvenient that the anchor structure solves the problems, such as in anchor rod experiment that prestressing force is adjusted, also have many advantages, such as it is easy to operate, meet scene.
Description
Technical field
The utility model relates to simulation test mooring rod technique field, especially a kind of prestressing force for simulation laboratory test
Adjustable anchor pole.
Background technique
Suspension roof support is used widely in engineering fields such as mining, ground, tunnels, Effects of Supporting and anchorage length
And prestressing force size etc. is closely related.Limited by field engineering, field test there are certain difficulty, simulation laboratory test at
For a kind of important research means.
Currently, bolt simulation material can be divided into wooden (bamboo, round bar etc.), plastics by material indoors in simulation test
(resin anchor), steel (round steel, screw rod etc.), length control difficulty is frequently with overall length anchor when Anchor Agent bonds when due to simulation
Gu and preceding two class, without pretightning force, the general of steel is applied using nut, prestressing force size is uncontrollable and accurate monitoring difficulty, by
This causes simulation effect and engineering actual variance larger.Therefore, existing around the accurate simulation for how realizing laboratory test anchor pole
Technology has carried out a series of improvement, such as micro pre-stressed anchor pole, which uses binder full length fastening, increased by exposed junction
If spring realizes prestressed application, and monitors rockbolt stress situation using small pressure ring, but by anchor rod anchored length, spring
The limitation contacted with wall surface etc. with pressure-bearing plate coupling and pressure rings, causes laboratory test results and the larger difference of engineering physical presence
It is different.Therefore, it is necessary to a kind of prestressed anchor of simulation laboratory test, realize that anchor pole difference anchorage length and prestressing force are adjusted,
To obtain better anchor pole indoor simulation effect.
Utility model content
Inconvenient technical problem is adjusted to solve prestressing force and the anchorage length of anchor pole, the utility model provides one kind
The adjustable simulation test anchor pole of prestressing force, specific technical solution are as follows.
A kind of adjustable simulation test anchor pole of prestressing force, including anchor bar body, anchorage head, loading plate, Minitype jack, pad
Plate, nut, liquid injection pipe, digital display manometer and topping-up pump；The anchored end of anchor bar body is provided with anchorage head, and anchor bar body connects anchorage head
End in coniform, anchorage head offers tensioning seam in side；Anchor bar body sequentially passes through loading plate, Minitype jack and pad
The exposed junction of anchor bar body is arranged in plate, nut；Loading plate is arranged in anchor pole exposed junction side, is provided between loading plate and backing plate
Minitype jack, pressure is equipped with nut on backing plate.
Further, it is provided with tee tube on liquid injection pipe, is connected with digital display manometer on tee tube.
Further, the anchored end of anchor bar body is provided with external screw thread, and anchored end reach is greater than anchorage head length.
Also further, the exposed junction of anchor bar body is provided with external screw thread, and exposed junction external thread length is greater than the length of nut.
Further, anchorage head is cylindrical, and anchorage head outer surface is provided with pawl shape form friction pattern, on anchorage head axis
It is provided with through-hole identical with anchor bar body diameter, is provided with internal screw thread in through-hole, is matched with the anchored end external screw thread of anchor bar body.
Further, Minitype jack is specially the jack of tubular, and jack internal diameter is equal to anchor bar body diameter, outer diameter
Less than the diameter of loading plate and backing plate.
Further, fluid injection tube end is provided with fluid pressure line connector, and each branch is provided with switch on tee tube.
Further, anchor bar body is made using steel, and anchorage head is formed by plastic production, and nut is hex nut.
The beneficial effects of the utility model include:
(1) the adjustable simulation test anchor pole of prestressing force provided by the utility model is regulated and controled miniature very heavy using topping-up pump
Stretching for top, realizes the accurate adjusting of bolt pretension, easy to operate, easily controllable, can be realized a variety of different prestressing force
The application of size solves small, uncontrollable limitation only with nut application prestressing force range, has expanded bolt simulation test
Range.
(2) it by using different length anchorage head, realizes the laboratory test simulation of anchor pole difference anchorage length, is suitble to research
The unconspicuous problem of bolt pretension effect caused by full length fastening is more in line with bolt simulation test live practical.System
Use carrying plate structure so that Minitype jack contacted with wall surface it is more abundant, effectively avoid it is uneven due to excavating tunnel wall surface,
The phenomenon that Minitype jack is also easy to produce stress raisers in fluid injection pressure process.
(3) method for carrying out simulation laboratory test using the prestressed anchor, adds anchor on similar material model indoors
Bar, the diameter and length adjustment of anchor pole are convenient, anchorage head are designed according to actual anchor rod anchored segment length, to preferably simulate
Practical rockbolt stress keeps suitable pretightning force by topping-up pump pressurization, to realize the control to pretightning force, and then studies pre-
Clamp force and anchor rod anchored length are to anchor rod anchored influence.
Detailed description of the invention
Fig. 1 is the adjustable simulation test anchor pole schematic diagram of prestressing force；
Fig. 2 is anchorage head cross section structure schematic diagram；
Fig. 3 is anchor rod prestress simulation laboratory test schematic diagram；
In figure: 1- anchor bar body；2- loading plate；3- Minitype jack；4- backing plate；5- nut；6- liquid injection pipe；7- digital display pressure
Table；8- topping-up pump；9- anchorage head.
Specific embodiment
In conjunction with shown in Fig. 1 to Fig. 3, a kind of adjustable simulation test of prestressing force provided by the utility model is specifically real with anchor pole
It is as follows to apply mode.
A kind of adjustable simulation test of prestressing force specifically includes anchor bar body 1, anchorage head 9, loading plate 2, miniature thousand with anchor pole
Jin top 3, backing plate 4, nut 5, liquid injection pipe 6, digital display manometer 7 and topping-up pump 8.1 one end of anchor bar body passes through 9 phase of screw thread and anchorage head
Even, for the anchored end of fixing anchor bar body, the connection side of anchorage head and anchor bar body anchor rod anchored length adjusting；The other end
It is connected by screw thread with nut 5, for fastening anchor pole, Minitype jack 3 is used to adjust the size of bolt pretension, realizes anchor
The adjusting of bar pretightning force controls, and is of great significance to the research of bolt pretension, hydraulic pump 8 connects miniature thousand by liquid injection pipe
Jin top 3 accurately adjusts pretightning force by digital display manometer 7 and hydraulic pump 8.
The anchored end of anchor bar body 1 is provided with anchorage head 9, and 9 end of anchorage head that anchor bar body 1 connects is in coniform, thus just
Just anchor bar body 1 is inserted into armature boring and anchorage head, and anchorage head 9 offers tensioning seam in side, so as to so that anchorage head adapts to
The drilling of different-diameter, and scaling appropriate is carried out according to bolt diameter；Anchor Agent is replaced to carry out anchor furthermore with anchorage head
Gu so as to accurately adjust anchorage length.Anchorage head 9 is cylindrical, and anchorage head 9 can be formed by plastic production, anchorage head 9
Outer surface is provided with pawl shape form friction pattern, preferably fixes anchorage head, guarantees that the position of anchorage head 9 is constant, on 9 axis of anchorage head
It is provided with through-hole identical with anchor bar body diameter, can be slightly less than anchor pole also to lead to by the better locking anchor pole of tensioning seam
It is provided with internal screw thread in hole, is matched with the anchored end external screw thread of anchor bar body 1.By using different length anchorage head, anchor is realized
The laboratory test of bar difference anchorage length is simulated, and solves the problems, such as that bolt pretension effect caused by full length fastening is unconspicuous,
It is more in line with bolt simulation test live practical.
Anchor bar body 1 sequentially passes through loading plate 2, Minitype jack 3 and backing plate 4, and the exposed junction of anchor bar body 1 is arranged in nut 5,
Nut 5 can be hex nut.Anchor bar body 1 is made using steel, and for simulating anchor pole, loading plate 2 is arranged in anchor pole exposed junction
Side is provided with Minitype jack 3 between loading plate 2 and backing plate 4, pressure is equipped with nut 5 on backing plate 4.Wherein loading plate 2 and backing plate
4 specifically can be the steel plate that circular hole identical as anchor bar body diameter is contained at middle part, and steel plate is relatively large in diameter, and guarantee that Minitype jack 3 is pacified
Dress is convenient.The anchored end of anchor bar body 1 is provided with external screw thread, and anchored end reach is greater than anchorage head length, so as to effective
Anchoring, the exposed junction of anchor bar body 1 are provided with external screw thread, and exposed junction external thread length is greater than nut length, to facilitate nut solid
It is fixed.In addition, the system is effectively prevented using 2 structure of loading plate so that Minitype jack and wall face contact are more abundant
Due to the phenomenon that excavation tunnel wall surface is uneven, and Minitype jack is also easy to produce stress raisers in fluid injection pressure process.
Minitype jack 3 connects topping-up pump 8 by liquid injection pipe 6, is provided with digital display manometer 7 on liquid injection pipe 6.It is miniature very heavy
Top 3 is specially the jack of tubular, and the bearing capacity of jack is less than 20T, and jack internal diameter is equal to anchor bar body diameter, facilitates anchor
Bar passes through, and anchor pole passes through Minitype jack 3 so as to preferably apply pretightning force to anchor pole, and the outer diameter of jack is less than carrying
The diameter of plate and backing plate.It is provided with tee tube on liquid injection pipe 6, digital display manometer 7, each branch on tee tube are connected on tee tube
It is provided with switch.Using the flexible of topping-up pump regulation Minitype jack, the accurate adjusting of bolt pretension, operation letter are realized
It is single, easily controllable, it can be realized the application of a variety of different prestressing force sizes, solve and apply prestressing force range only with nut
Small, uncontrollable limitation has expanded the range of bolt simulation test.
The structure of the above-mentioned prestressed anchor for further instruction provides a kind of anchor rod prestress simulation laboratory test side
Method is tested using a kind of above-mentioned adjustable simulation test of prestressing force with anchor pole, and specific test procedure includes:
A. similar material model is made, is drilled on model, according to the rock-bolt length of experimental design and the corresponding adjustment of diameter
The depth and bore diameter of drilling.Specifically on similar material model, drills through and set using boring bar tool according to design requirement
The drilling of diameter and depth is counted, and carries out borehole cleaning.
B. anchorage head length is designed according to anchoring depth, anchorage head is installed, anchorage head is sent to drilling hole bottom, it can also be with
Anchorage head is sent into bottom hole by anchor bar body.
C. anchor bar body is installed, anchor bar body anchoring section is cooperated by screw thread and anchorage head, and anchor bar body rotation is sent to projected depth.
D. loading plate, Minitype jack, backing plate and nut are successively installed, is tightened by nut, so that loading plate, miniature thousand
Jin top and backing plate are in close contact.
E. liquid injection pipe, tee tube, digital display manometer and topping-up pump are connected, particular by liquid injection pipe by threeway respectively with note
Liquid pump and Minitype jack are connected, and digital display manometer is connected in threeway.
F. it designs bolt pretension, opens tee tube switch, pretightning force size is forced by topping-up pump, stand 3~
5min observes pressure gauge reading, if pressure reduction continues to pressurize, continuous observation closes three until pressure gauge reading remains unchanged
Siphunculus switch.
G. step A to F is repeated, multiple pretightning force test anchor poles are set on similar material model.
The method of anchor rod prestress simulation laboratory test adds anchor pole, the diameter of anchor pole indoors on similar material model
It is convenient with length adjustment, anchorage head is designed according to actual anchor rod anchored segment length, so that practical rockbolt stress is preferably simulated,
Suitable pretightning force is kept by topping-up pump pressurization, to realize the control to pretightning force, and then studies pretightning force and anchor pole anchor
Gu length is to anchor rod anchored influence.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered
Belong to the protection scope of the utility model.
Claims (8)
1. a kind of adjustable simulation test anchor pole of prestressing force, which is characterized in that including anchor bar body, anchorage head, loading plate, miniature
Jack, backing plate, nut, liquid injection pipe, digital display manometer and topping-up pump；The anchored end of the anchor bar body is provided with anchorage head, anchor
The body of rod connects the end of anchorage head in coniform, and anchorage head offers tensioning seam in side；The anchor bar body sequentially passes through carrying
The exposed junction of anchor bar body is arranged in plate, Minitype jack and backing plate, nut；The loading plate is arranged in anchor pole exposed junction side,
Minitype jack is provided between loading plate and backing plate, pressure is equipped with nut on backing plate.
2. the adjustable simulation test anchor pole of a kind of prestressing force according to claim 1, which is characterized in that the liquid injection pipe
On be provided with tee tube, be connected with digital display manometer on the tee tube.
3. the adjustable simulation test anchor pole of a kind of prestressing force according to claim 1, which is characterized in that the anchor bar body
Anchored end be provided with external screw thread, anchored end reach is greater than anchorage head length.
4. the adjustable simulation test anchor pole of a kind of prestressing force according to claim 3, which is characterized in that the anchor bar body
Exposed junction be provided with external screw thread, exposed junction external thread length is greater than the length of nut.
5. the adjustable simulation test anchor pole of a kind of prestressing force according to claim 4, which is characterized in that the anchorage head
Cylindrical, anchorage head outer surface is provided with pawl shape form friction pattern, is provided on the anchorage head axis and anchor bar body diameter phase
With through-hole, be provided with internal screw thread in through-hole, matched with the anchored end external screw thread of anchor bar body.
6. the adjustable simulation test anchor pole of a kind of prestressing force according to claim 2, which is characterized in that described miniature thousand
Jin top is specially the jack of tubular, and jack internal diameter is equal to anchor bar body diameter, and outer diameter is less than the diameter of loading plate and backing plate.
7. the adjustable simulation test anchor pole of a kind of prestressing force according to claim 2, which is characterized in that the liquid injection pipe
End is provided with fluid pressure line connector, and each branch is provided with switch on the tee tube.
8. the adjustable simulation test anchor pole of a kind of prestressing force according to any one of claims 1 to 7, which is characterized in that
The anchor bar body is made using steel, and the anchorage head is formed by plastic production, and the nut is hex nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920221851.7U CN209687518U (en) | 2019-02-22 | 2019-02-22 | A kind of adjustable simulation test anchor pole of prestressing force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920221851.7U CN209687518U (en) | 2019-02-22 | 2019-02-22 | A kind of adjustable simulation test anchor pole of prestressing force |
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| Publication Number | Publication Date |
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| CN209687518U true CN209687518U (en) | 2019-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920221851.7U Active CN209687518U (en) | 2019-02-22 | 2019-02-22 | A kind of adjustable simulation test anchor pole of prestressing force |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322101A (en) * | 2020-04-29 | 2020-06-23 | 湖南科技大学 | Auxiliary device for applying pre-tightening force of anchor rod and construction method |
-
2019
- 2019-02-22 CN CN201920221851.7U patent/CN209687518U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322101A (en) * | 2020-04-29 | 2020-06-23 | 湖南科技大学 | Auxiliary device for applying pre-tightening force of anchor rod and construction method |
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