CN106442121A - Test device for studying load imposed on anchor rods by separation layer and making method - Google Patents
Test device for studying load imposed on anchor rods by separation layer and making method Download PDFInfo
- Publication number
- CN106442121A CN106442121A CN201610534274.8A CN201610534274A CN106442121A CN 106442121 A CN106442121 A CN 106442121A CN 201610534274 A CN201610534274 A CN 201610534274A CN 106442121 A CN106442121 A CN 106442121A
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- CN
- China
- Prior art keywords
- test block
- anchor pole
- experimental rig
- research
- absciss layer
- Prior art date
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/062—Special adaptations of indicating or recording means with mechanical indicating or recording means
Abstract
The invention provides a test device for studying the load imposed on anchor rods by a separation layer and a making method. The test device includes an H-shaped test block, a reserved gap is disposed on a horizontal symmetric plane of the test block, the vertical section of the H-shaped test block is internally provided with anchor rods sticked with strain gauges, and both ends of the anchor rods respectively extend to the upper side and lower side of the test block. The left and the right of the H-shaped test block respectively has a groove, the grooves are used for placing a first dial indicator equipped hydraulic jack, the front side and back side of the test block are both provided with a reinforcing steel frame, the reinforcing steel frame is disposed along the corner positions of the grooves, and the upper side and lower side in the grooves are both equipped with reinforcing steel plates. The test block is also provided with a displacement measurement system. The making method comprises the steps of: (1) mold making; (2) making of a concrete test block; (3) sticking of strain gauges to the anchor rods; (4) making of an anchoring agent; and (5) setting of the displacement measurement system. The test device provided by the invention has the advantages of high reliability of test data and convenient operation.
Description
Technical field
The invention belongs to mechanics study technical field, especially relate to a kind of research test to bolt action load for the absciss layer
Device and preparation method.
Background technology
Absciss layer produces load action to anchor pole, for determining the absciss layer stress pattern of the body of rod and destruction in evolution
Rule, should carry out experimental test, but on-the-spot test difficulty is larger, be difficult to first determine that the position of absciss layer and absciss layer value are big
Little, secondly host rock environment is complicated, and influence factor is excessive, and test discreteness is larger.Laboratory test effectively studies hand as a kind of
Section, can be with the correctness of proof theory model and applicability.The key point of test is reserved absciss layer, and test block is separated, this
The bright test block shape from design is set about, and test block is reinforced, and will be loaded test block separation using jack, and arranges displacement prison
Examining system, stress monitoring system, constitute integrity test.
Content of the invention
It is an object of the invention to provide the research absciss layer pair that a kind of structure is simple, simple to operate, test data reliability is high
The experimental rig of bolt action load and preparation method.
The technical scheme is that：A kind of experimental rig to bolt action load for the research absciss layer of the present invention, described
Experimental rig includes the test block of " work " font, and the horizontal symmetrical face of described test block is provided with reserving gaps, " work " font test block
The anchor pole posting foil gauge is set, the two ends of described anchor pole extend respectively to the both sides up and down of test block in vertical section；
The left and right of described " work " font test block respectively forms in a groove, described groove and carries the first amesdial for placing
Hydraulic jack, described test block before and after both sides be equipped with reinforcing steelframe, described reinforcing steelframe sets along the corner location of groove
Put, in described groove, upper and lower surface is equipped with strengthening steel slab；
It is additionally provided with displacement measurement system in described test block.
Preferably, the angle between described anchor pole and reserving gaps is 60 ° or 90 °.
Preferably, described reinforcing steelframe is welded into by steel plate and angle steel.
Preferably, described strengthening steel slab is in concave, and extends to the both sides in front and back of anchor pole.
Preferably, described anchor pole is provided with three, and the corresponding middle anchor pole of the second amesdial of described displacement measurement system sets
Put.
Preferably, arbitrary anchor pole is provided with 6 foil gauges, wherein 3 tops being located at reserving gaps, and 3 positioned at reserved
The bottom in gap.
Preferably, described displacement measurement system includes being provided with two the second amesdials on front side of test block, two the second amesdials
It is fixed on the both sides up and down of reserving gaps by fixing steel plate.
Another aspect of the present invention, also includes a kind of making side of the research experimental rig to bolt action load for the absciss layer
Method, it comprises the following steps：
(1) Mold Making：Test block according to " work " font makes corresponding mould, and mould adopts plank sheathing, mold bottom
Setting cystosepiment, inserts pvc pipe at bottom foam plate design attitude, and reserved boring anchors ready for follow-up slip casting；
(2) concrete sample make：In the mould that concreting in lifts to step (1) is made, pour point two parts,
Bottom pours and stops hour to reserving gaps position, spreads one layer of plastic paper, then pours upside, and pvc pipe is pulled out after reaching initial set by test block
Go out, after test block hardening form removal, row maintenance when being sent to temperature standard fog room；
Using the reinforcing steelframe that steel plate and angle steel are welded into, position is loaded to jack and carry out local stiffening；
(3) anchor pole patch foil gauge：The position needing on reinforcing bar to paste foil gauge is polished smooth, posts foil gauge, use epoxy
Resin does water-proofing treatment；
(4) Anchor Agent makes：Make Anchor Agent, can directly be circulated in boring, then anchor pole insertion will be tested, wait anchoring
Agent solidifies, and the anchor pole posting foil gauge is fixed on inside the test block of " work " font；
(5) displacement measurement system setting：Second amesdial of test displacement is fixed in test block by fixing steel plate, reserves
The each displacement sum installed, survey two the second amesdials in the upper and lower both sides in gap, clearance gauge is then passed through in the displacement at the anchor pole of both sides
Measure, finally average and carry out data analysis.
The present invention has the advantages and positive effects that：
1st, rock material, using self-control concrete test block simulation, for making test block separate, needs test block is loaded, loads and select
Test block is backed down by jack, convenient for loading, and " I shape " is made in test block.
2nd, can be by foil gauge, the anchor pole additional stress field rule that monitoring absciss layer causes be pasted on anchor pole；Can study from
The loading process of layer effect lower bolt, and failure law, can study under 2 kinds of different operating modes, the stress distribution of anchor pole：One kind is anchor
Bar is vertical with absciss layer, and one kind is anchor pole with absciss layer at an angle, and research anchor pole tension, tension cut the stress of 2 kinds of different situations
Distribution and failure law.
3rd, pass through to record load and fracture open value, draw absciss layer value size and the relation of anchor axial force, and with theory
The relation curve of model is contrasted.
Brief description
Fig. 1 is the structural representation (anchor pole and reserving gaps are in 90 ° of angles) of experimental rig of the present invention.
Fig. 2 is the structural representation (anchor pole and reserving gaps are in 60 ° of angles) of experimental rig of the present invention.
Fig. 3 is the setting structure schematic diagram of strengthening steel slab.
Fig. 4 is the front view (anchor pole and reserving gaps are in 90 ° of angles) of experimental rig of the present invention.
Fig. 5 is the front view (anchor pole and reserving gaps are in 60 ° of angles) of experimental rig of the present invention.
Fig. 6 is mould structure schematic diagram.
Fig. 7 is the attachment structure schematic diagram of anchor pole and foil gauge.
Fig. 8 is the structural representation of test block.
Fig. 9 is the assembling structure schematic diagram (omit hydraulic jack, reinforce steelframe, strengthening steel slab) of the second amesdial
In figure：
1- test block, 2- reserving gaps, 3- anchor pole, 4- groove, 5- hydraulic jack, 6- first amesdial, 7- backing plate, 8-
Two amesdials, 9- reinforces steelframe, 10- strengthening steel slab, 11- mould, 12- cystosepiment, and 13-PVC manages, 14- foil gauge, and 15- positions
Steel plate.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is elaborated.
As Figure 1-5, the experimental rig to bolt action load for a kind of research absciss layer of the present invention, described experimental rig
Including the test block 1 of " work " font, the bottom of test block 1 is provided with backing plate 7, sets the anchor pole 3 posting foil gauge in described test block 1, described
The centre position of test block 1 is provided with horizontal-extending reserving gaps 2, and the left and right groove 4 of described test block is used for placing with the 1000th
The hydraulic jack 5 of point table 6, before and after described test block 1, both sides are provided with the reinforcing steelframe 9 that steel plate and angle steel are welded into, described plus
Gu steelframe 9 is equipped with the strengthening steel slab 10 of concave along the corner location setting of groove, the upper and lower ends of described groove.
Angle between described anchor pole and reserving gaps is 90 ° or 60 °.
A kind of preparation method of the experimental rig to bolt action load for the research absciss layer of the present invention, comprises the following steps：
(1) Mold Making
As shown in fig. 6, the corresponding mould of making 11 of the test block according to " work " font, mould adopts plank sheathing, wooden model version
There is advantages below：Plate face flat smooth, can saw, and can bore, easy accessibility, simple to operate, and manufacturing speed is fast, is convenient in demoulding and becomes
This is low.According to the given size of Fig. 3, make mould.For convenience of determining anchor pole position, mold bottom arranges cystosepiment 12, in bottom
Pvc pipe 13 is inserted, the height of pvc pipe is higher than the height of the test block of " work " font, after reserved boring is at cystosepiment design attitude
Continuous slip casting anchoring is ready.
(2) concrete sample make
Concrete grade is C30, requires (water: cement: sand: stone=0.38: 1: 1.11: 2.72) according to mix-design
Weigh, the cement weighing up and sand are added water stirring, finally adds stone and be sufficiently stirred for.By concreting in lifts to step
(1) in the mould making, point two parts are poured, bottom pours and stops 2 hours to reserving gaps position, spreads one layer of plastic paper, then pours
Build upside.Pvc pipe is extracted after reaching initial set by test block, after test block hardening form removal, should be sent to 20 ± 3 DEG C of temperature in time, humidity is
Row maintenance during more than 90% standard curing room, the good test block of maintenance is as shown in Figure 8.
Concrete also known as artificial stone, property, similar to rock, is fragile material, resistance to compression but non-tension, not shearing resistance, therefore right
Also need outside test block to be reinforced, the reinforcing steelframe being welded into by steel plate and angle steel loads position to jack to carry out locally adding
Gu, the test block after reinforcing is as illustrated in figures 4-5.
(3) anchor pole patch foil gauge
As shown in fig. 7, the position needing on reinforcing bar to paste foil gauge 14 is polished smooth, the area at smooth place be 5mm ×
10mm.Foil gauge 14 is posted on the spiral of length 60cm, does water-proofing treatment with epoxy resin.Foil strain gauge size is
2mm × 3mm, every is pasted 6, and each patch in upper and lower both sides 3 is so that all there are 3 foil gauges to be located in reserving gaps on every anchor pole
Side, 3 foil gauges are located at the downside of reserving gaps.
(4) Anchor Agent makes
Being determined according to ancillary test is used G type bar planting material as fixing agent for anchor poles, and G moulding mixture is mixed with water according to a certain percentage
With, this material good fluidity, directly can be circulated in boring, then anchor pole insertion will be tested, wait Anchor Agent solidification, post foil gauge
Anchor pole be fixed on inside the test block of " work " font.
(5) displacement measurement system setting
As shown in figure 9, the second amesdial 8 of test displacement is arranged at middle anchor pole position, nail positioning steel in test block 1
Plate 15, the second amesdial 8 is arranged on and is fixed on fixing steel plate 15, and the upper and lower both sides of reserving gaps are each to install one, surveys two
The displacement sum of the second amesdial 8.Displacement at the anchor pole of both sides is then measured by clearance gauge, and finally averaging carries out data and divide
Analysis.
Above one embodiment of the present of invention is described in detail, but described content has been only the preferable enforcement of the present invention
Example is it is impossible to be considered the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement
Deng all should still belong within the patent covering scope of the present invention.
Claims (8)
1. a kind of research absciss layer to the experimental rig of bolt action load it is characterised in that：Described experimental rig includes " work " word
The test block of type, the horizontal symmetrical face of described test block is provided with reserving gaps, sets and post strain in the vertical section of " work " font test block
The anchor pole of piece, the two ends of described anchor pole extend respectively to the both sides up and down of test block；
The left and right of described " work " font test block respectively forms a groove, and described groove is used for placing the hydraulic pressure with the first amesdial
Jack, before and after described test block, both sides are equipped with reinforcing steelframe, and described reinforcing steelframe is along the corner location setting of groove, described
In groove, upper and lower surface is equipped with strengthening steel slab；
It is additionally provided with displacement measurement system in described test block.
2. a kind of research absciss layer according to claim 1 to the experimental rig of bolt action load it is characterised in that：Described
60 ° or 90 ° of angle between anchor pole and reserving gaps.
3. a kind of research absciss layer according to claim 1 to the experimental rig of bolt action load it is characterised in that：Described
Reinforce what steelframe was welded into by steel plate and angle steel.
4. a kind of research absciss layer according to claim 1 to the experimental rig of bolt action load it is characterised in that：Described
Strengthening steel slab is in concave, and extends to the both sides in front and back of anchor pole.
5. a kind of research absciss layer according to claim 1 to the experimental rig of bolt action load it is characterised in that：Described
Anchor pole is provided with three, the corresponding middle anchor pole setting of the second amesdial of described displacement measurement system.
6. a kind of research absciss layer according to claim 1 to the experimental rig of bolt action load it is characterised in that：Arbitrary
Anchor pole is provided with 6 foil gauges, wherein 3 tops being located at reserving gaps, 3 bottoms being located at reserving gaps.
7. a kind of research absciss layer according to claim 1 to the experimental rig of bolt action load it is characterised in that：Described
Displacement measurement system includes two the second amesdials of setting on front side of test block, and two the second amesdials are fixed on by fixing steel plate
The both sides up and down of reserving gaps.
8. a kind of as claimed in claim 1 research the experimental rig to bolt action load for the absciss layer preparation method, including with
Lower step：
(1) Mold Making：Test block according to " work " font makes corresponding mould, and mould adopts plank sheathing, and mold bottom is arranged
Cystosepiment, inserts pvc pipe at bottom foam plate design attitude, reserves boring ready for follow-up slip casting anchoring；
(2) concrete sample make：In the mould that concreting in lifts to step (1) is made, pour point two parts, bottom
Pour and stop hour to reserving gaps position, spread one layer of plastic paper, then pour upside, pvc pipe is extracted after reaching initial set by test block, examination
After block hardening form removal, row maintenance when being sent to temperature standard fog room；
Using the reinforcing steelframe that steel plate and angle steel are welded into, position is loaded to jack and carry out local stiffening；
(3) anchor pole patch foil gauge：The position needing on reinforcing bar to paste foil gauge is polished smooth, posts foil gauge, use epoxy resin
Do water-proofing treatment；
(4) Anchor Agent makes：Make Anchor Agent, can directly be circulated in boring, then anchor pole insertion will be tested, wait Anchor Agent to coagulate
Gu, the anchor pole posting foil gauge is fixed on inside the test block of " work " font；
(5) displacement measurement system setting：Second amesdial of test displacement is fixed in test block by fixing steel plate, reserving gaps
The each displacement sum installed, survey two the second amesdials in both sides up and down, the displacement at the anchor pole of both sides is then measured by clearance gauge,
Finally average and carry out data analysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610534274.8A CN106442121B (en) | 2016-06-29 | 2016-06-29 | A kind of research absciss layer is to the experimental rig and production method of bolt action load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610534274.8A CN106442121B (en) | 2016-06-29 | 2016-06-29 | A kind of research absciss layer is to the experimental rig and production method of bolt action load |
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| Publication Number | Publication Date |
|---|---|
| CN106442121A true CN106442121A (en) | 2017-02-22 |
| CN106442121B CN106442121B (en) | 2019-07-19 |
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| CN201610534274.8A Active CN106442121B (en) | 2016-06-29 | 2016-06-29 | A kind of research absciss layer is to the experimental rig and production method of bolt action load |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053214A (en) * | 2016-07-28 | 2016-10-26 | 西安工业大学 | Testing apparatus for research of imposed load of bed separation to anchor pole and manufacturing method |
| CN107607380A (en) * | 2017-11-15 | 2018-01-19 | 河南理工大学 | The making mould of multi-angle class containing interlayer rock mass reinforcing experiment |
| CN110274818A (en) * | 2019-06-12 | 2019-09-24 | 东南大学 | A kind of cable-supported bridge fire causes the combination test apparatus of disconnected rope |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001303583A (en) * | 2000-04-25 | 2001-10-31 | Sanei Shoji Kk | Foundation structure for building and its execution method |
| CN1773241A (en) * | 2004-11-11 | 2006-05-17 | 香港理工大学 | Testing box for measuring anti-pulling force of soil nailing mechanical property |
| CN102175518A (en) * | 2011-02-22 | 2011-09-07 | 河海大学 | Method for testing flexural tensile strength of pavement concrete under complete road surface |
| CN203083879U (en) * | 2013-02-26 | 2013-07-24 | 长安大学 | Soil anchor strain testing system |
| CN203287250U (en) * | 2013-05-09 | 2013-11-13 | 深圳市工勘岩土工程有限公司 | Tensile test device for sock-soil |
| CN203414351U (en) * | 2013-09-09 | 2014-01-29 | 长沙学院 | Prestrain reinforced experimental device |
-
2016
- 2016-06-29 CN CN201610534274.8A patent/CN106442121B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001303583A (en) * | 2000-04-25 | 2001-10-31 | Sanei Shoji Kk | Foundation structure for building and its execution method |
| CN1773241A (en) * | 2004-11-11 | 2006-05-17 | 香港理工大学 | Testing box for measuring anti-pulling force of soil nailing mechanical property |
| CN102175518A (en) * | 2011-02-22 | 2011-09-07 | 河海大学 | Method for testing flexural tensile strength of pavement concrete under complete road surface |
| CN203083879U (en) * | 2013-02-26 | 2013-07-24 | 长安大学 | Soil anchor strain testing system |
| CN203287250U (en) * | 2013-05-09 | 2013-11-13 | 深圳市工勘岩土工程有限公司 | Tensile test device for sock-soil |
| CN203414351U (en) * | 2013-09-09 | 2014-01-29 | 长沙学院 | Prestrain reinforced experimental device |
Non-Patent Citations (1)
| Title |
|---|
| 谷拴成 等: "考虑围岩离层影响的端部锚固锚杆荷载分析及其支护设计", 《采矿与安全工程学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053214A (en) * | 2016-07-28 | 2016-10-26 | 西安工业大学 | Testing apparatus for research of imposed load of bed separation to anchor pole and manufacturing method |
| CN107607380A (en) * | 2017-11-15 | 2018-01-19 | 河南理工大学 | The making mould of multi-angle class containing interlayer rock mass reinforcing experiment |
| CN107607380B (en) * | 2017-11-15 | 2023-08-25 | 华侨大学 | Manufacturing die for multi-angle interlayer-containing rock mass reinforcement test |
| CN110274818A (en) * | 2019-06-12 | 2019-09-24 | 东南大学 | A kind of cable-supported bridge fire causes the combination test apparatus of disconnected rope |
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| Publication number | Publication date |
|---|---|
| CN106442121B (en) | 2019-07-19 |
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