CN105699154B - Carrying shear test sample preparation device and method for making sample - Google Patents
Carrying shear test sample preparation device and method for making sample Download PDFInfo
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- CN105699154B CN105699154B CN201610273892.1A CN201610273892A CN105699154B CN 105699154 B CN105699154 B CN 105699154B CN 201610273892 A CN201610273892 A CN 201610273892A CN 105699154 B CN105699154 B CN 105699154B
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- 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
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Abstract
The invention belongs to rock mechanicals to test field, concrete amount can be saved by providing one kind, facilitate the carrying shear test sample preparation device of the sample after taking out placing concrete and corresponding method for making sample simultaneously, carrying shear test sample preparation device includes sample preparation box, the sample preparation box includes two pieces of exterior panels and two pieces of inside panels, two pieces of inside panels are by the way that one side connects is V-shaped, two pieces of exterior panels are correspondingly arranged at the both sides of two pieces of inside panels, and the V-shaped groove structure of a upper opening is surrounded by two pieces of inside panels and two pieces of exterior panels；It is to be detachably connected between the exterior panel and inside panel.In addition, also by the way that the structures such as corresponding threaded post, steel bar and drawstring are arranged, the position of rock mass sample is adjusted by drawstring.The present invention can effectively reduce concrete amount, and effectively can carry out limit constraint to rock mass sample in placing concrete, it is ensured that it is accurate to be fixed to the position of rock mass sample, sample preparation success rate can be improved, and reduce the influence to carrying shear test result accuracy.
Description
Technical field
The invention belongs to rock mechanical experiment field more particularly to a kind of carrying shear test sample preparation device and its sample preparation sides
Method.
Background technology
Rock mechanical experiment is the technical way that geologist obtains rock mechanical property, at present Rock And Soil
Mechanical test mainly has carrying shear test, Point Load Tests, reisilometer experiment, the experiment of gravelly soil large-sized experiment, cone penetrometer, staight scissors examination
It tests, triaxial test etc., and carrying shear test among these refers to the experiment of portable type boxshear apparatus, it is simple with instrumentation, it is not required to
The rock sample of regular shape is used, while rock mass discontinuity, soft rock, the peak value of special soils and residual value shearing resistance can be measured
The advantages of intensive parameter, is widely used in rock mechanical experiment.The accuracy of carrying shear test result and made sample
Quality has direct relation, and therefore, design is a kind of easy to operate, and the preferable carrying shear test sample preparation device of sample preparation effect just seems outstanding
For necessity.
Currently, carrying shear test sample preparation mainly has following three kinds of methods：
Method one：Using cuboid box-like sample preparation device, structural plane side rock mass is put into sample preparation device, is then poured
Concrete takes out the concrete casting that sample carries out the structural plane other side after concrete setting for a period of time, waits for that the other side is mixed
After solidifying soil solidification a period of time, dismounting sample preparation device completes sample preparation.Rock mass sample is directly put into concrete and carries out by this method
Sample preparation, since rock mass itself has constant weight, sedimentation will be will produce by being directly placed into concrete, be easily led to concrete and be penetrated into rock mass
In structural plane, either since differential settlement structural plane is tilted generating or is caused in structural plane Transducers Embedded in Concrete, it will cause
Sample preparation failure and the accuracy for influencing carrying shear test result.
Method two：It is provided with vertical screw branch using cuboid box-like sample preparation device, and in rectangular box body device bottom
Support rock mass sample；Its method is first to adjust vertical screw to support rock mass sample, then pour structural plane side rock mass, then uses paraffin
Then top rock mass is directly poured in sealing structure face, after to be solidified, dismounting sample preparation device completes sample preparation.This method is in publication number
For CN103234838B, disclosed in the document of entitled " a kind of experimental method and device of the shearing of prismatical joint structural plane ",
This method is improved for the shortcomings that above method one, and vertical screw is provided with for branch in rectangular box body device bottom
Support and limitation rock mass, can solve the problems, such as that rock mass is settled in placing concrete, and be sealed with paraffin in sample pouring
Structural plane directly pours top rock mass.But this method still has disadvantage：First, rock mass sample is mostly irregular rock mass,
Rock mass is supported using vertical screw, operation is extremely complex, difficult, and needs to take out sample, vertical screw after the completion of sample preparation
Position be equivalent in mortar, concrete and form cavity, one side makes the integral strength of mortar reduce, and takes and cuts in the later stage
Possible mortar first generates destruction in experiment, causes test failure；On the other hand, due to the addition of vertical screw, cause screw with
Concrete combines, and is unfavorable for the taking-up of later stage concrete；Secondly, using paraffin sealing structure face, paraffin may penetrate into structure
In face, structure surface intensity is reduced, the accuracy of carrying shear test result is influenced；Moreover, paraffin surface is extremely satiny, with rock mass surface
Fitting can not be very close, will make part concrete mortar using top concrete is directly poured behind paraffin sealing structure face
Either exudation sample preparation device causes sample preparation failure or influences the accurate of carrying shear test result from paraffin surface infiltration structural plane
Property.
Method three：It is provided with clamping rock mass using cuboid box-like sample preparation device, and on rectangular box body device top
Clamping piece or clamping device；The vertical screw in the above method two is replaced by clamping piece or clamping device, to play pair
The support of rock mass, restriction effect；By first clamping rock mass with clamping piece, then placing concrete again, sample is taken out after to be solidified,
Then another part concrete is poured, after another part solidification, dismounting sample preparation device completes sample preparation.This method is in Publication No.
CN102061685B, entitled " the anti-settling folder of structural fece sample in direct shearing test " and Publication No. CN102410962A, name
Referred to as in the document of " portable field indoor dual-purpose rock mass discontinuity direct shearing test instrument ", there are open setting clamping piece or folder
Hold mechanism.This method is improved for the shortcomings that above method one and method two, is set at the top of rectangular box body device
The component for having set clamping rock mass can avoid leaving a void in concrete instead of vertical screw, while taking convenient for concrete
Go out.But this method still has disadvantage：First, rock mass sample is mostly the rock mass of irregular, surface irregularity, corner angle
Distribution, and rock mass shear direction is fixed-direction, i.e., cannot replace the clamping direction of rock mass, it therefore, may using clamping piece
The case where rock mass can still be slided along clamping face after appearance rock mass can not be clamped or is clamped；Secondly, clamping piece is only capable of fixed clamp
Face direction, i.e., can only limit two sides of rock mass, and remaining both sides and unlocked, and firm grip is simultaneously unreliable；Further more, rock mass
With constant weight, after rock mass is clamped using clamping piece, rock mass may still generate certain tenesmus along gravity direction.
In addition, above-mentioned three kinds of methods are all made of the sample preparation device of cuboid box-like, the sample preparation box of placing concrete is in
Cuboid, thus need the amount of placing concrete more, and concrete, as expendable consumed product, rectangle box body will be made
At great waste；Secondly, the sample preparation box of cuboid, when taking out the concrete of pouring using direct extraction mode, due to
The face contacted with concrete is more, and the concrete poured be it is vertical up and down, thus be not easy to take out the concrete after pouring；
Further more, corresponding grip structure is not arranged on sample preparation box in above-mentioned three kinds of methods, therefore be inconvenient to move and dismantle sample preparation
Device, apparatus structure layout are unreasonable.
Invention content
The technical problem to be solved by the present invention is to provide one kind can saving concrete amount, while facilitating taking-up placing concrete
The carrying shear test sample preparation device and corresponding method for making sample of sample afterwards；And it can be effectively to rock mass in placing concrete
Sample carries out limit constraint, it is ensured that it is accurate to be fixed to the position of rock mass sample, improves sample preparation success rate, and reduce and cut examination to taking
Test the influence of result accuracy.
The technical solution adopted by the present invention to solve the technical problems is：Carrying shear test sample preparation device, including sample preparation box, institute
It includes two pieces of exterior panels and two pieces of inside panels to state sample preparation box, and two pieces of inside panels are connected by V-shaped, two pieces of outer walls by one side
Plate is correspondingly arranged at the both sides of two pieces of inside panels, and the V-shaped groove of a upper opening is surrounded by two pieces of inside panels and two pieces of exterior panels
Structure；It is to be detachably connected between the exterior panel and inside panel.
It is further：The side that two pieces of inside panels connect is detachably connected by screw or is hingedly connected by hinge
It connects.
It is further：Handle is provided on the opposite outside of two pieces of exterior panels, handle can by screw with exterior panel
Dismantling connection.
It is further：Further include threaded post, steel bar and drawstring；One end of threaded post is connected on exterior panel and V-shaped groove
On the corresponding side of upper opening of structure, other end extends straight up；There are four threaded posts, and four threaded posts are each other
It is parallel, and four rectangular distributions of threaded post；There are two steel bars, and the both ends of each steel bar are respectively arranged with adjustment hole, two
There are two the pulling eyes being spaced apart for setting between a adjustment hole；The adjustment hole at both ends is respectively fitted over a threaded post on same steel bar
On, adjusting nut is equipped in the threaded post below adjustment hole；Two steel bars are set parallel to each other；Each pulling eye is correspondingly arranged one
Root drawstring, and one end of drawstring is connect with pulling eye, and the other end of drawstring is connect with rock mass sample.
It is further：Further include bundle rope, the bundle rope is bound rock mass sample by right-angled intersection binding mode, and
Right-angled intersection is located at the top and bottom of rock mass sample；Four drawstrings are connected to rock mass with one end that rock mass sample is correspondingly connected with
Four bending parts of bundle rope at the top of sample.
It is further：The drawstring and bundle rope are iron wire or rope.
It is further：Further include two L-shaped gages that can freely ride between two pieces of exterior panels, on each L-shaped gage
The height H1 of first side measuring surface is 5mm, and the height H2 of the second side measuring surface is 10mm.
In addition, the present invention also provides carrying shear test method for making sample, above-mentioned carrying shear test sample preparation device is used, and according to such as
Lower step carries out：
The first step is marking the quasi- side for carrying out carrying shear test with marking pen in plane where rock mass specimen surface and structural plane
To, it is then restricted according to right-angled intersection binding mode with bundle, rock mass sample is bound, the carrying shear test of right-angled intersection bundle rope and label
Direction is in 45 °, and wherein one end of four drawstrings is bound to four in right-angled intersection bundle rope at the top of rock mass sample respectively later
Bending part；
Second step, assembling sample preparation box and installation threaded post and steel bar, sample preparation box is placed on level ground；In two pieces
One layer of releasing agent is smeared in the inside face for the V-shaped groove structure that siding and two pieces of exterior panels surround；
Rock mass sample is placed in the middle part of V-shaped groove structure, and keeps the direction of carrying shear test and the side of exterior panel by third step
To consistent；
4th step, the drawstring being already connected to one end on rock mass sample the other end respectively with corresponding pulling eye connect, so
The first side measuring surface of two L-shaped gages is adjacent to respectively in the both sides of rock mass sample afterwards；Steel is adjusted by adjusting nut later
Item height, and the length after being bound simultaneously by adjusting four drawstrings, make rock mass sample structural plane and two L-shaped gages the
The upper edge of one side measuring surface is flushed along holding, and makes rock mass in sample preparation box middle position；
5th step injects concrete into V-shaped groove structure, and marginal not enters concrete edge and uses the tool vibrated concrete that vibrates,
Stop injection concrete when concrete and the upper opening flush of V-shaped groove structure, then smooth concrete surface；
6th step, after the concrete setting of previous step injection and after reaching certain structural strength, remove drawstring, steel bar and spiral shell
Line column unscrews the screw on exterior panel, is then taken produced half and cuts sample taking-up；
Threaded post after being dismantled in 6th step and steel bar are repeated second step by the 7th step, to carry out secondary assembling；
Produced half is taken and cuts sample and be placed upside down on steel bar by the 8th step, by the first side measuring surface of two L-shaped gages
It is adjacent to respectively in the both sides of rock mass sample；Steel bar height is adjusted by adjusting nut later, makes the structural plane and two of rock mass sample
The upper edge of first side measuring surface of a L-shaped gage is flushed along holding, and keeps rock mass in sample preparation box middle position, is adjusted simultaneously
The concrete that top has solidified is aligned with lower section sample preparation box；
9th step repeats the 5th step, is taken with cast and cuts sample the other half concrete；
Tenth step, after the concrete setting of previous step injection and after reaching certain structural strength, first remove steel bar and screw thread
Then column dismantles two pieces of exterior panels and two pieces of inside panels, you can produced entire take is cut sample taking-up；
Entire take is cut sample placement certain time by the 11st step, makes the coagulation poured into a mould respectively in the 5th step and the 9th step
Soil, which reaches entire to take after sufficient intensity, to be cut sample and is put into carrying shear test instrument, and the bundle rope on rock mass sample is cut, you can
Carry out carrying shear test.
It is further：It is at least spaced after the 5th step 24 hours and carries out the 6th step again；After the 9th step at least between
The tenth step was carried out again every 24 hours.
It is further：In second step, after smearing one layer of releasing agent, one layer of paper can be also covered again on releasing agent
；After the 7th step, before the 8th step, the second side measuring surface of two L-shaped gages can be first individually positioned in the spiral shell of both sides
At line column, steel bar height is adjusted extremely with the upper edge of the second side measuring surface along concordant by adjusting nut later.
The beneficial effects of the invention are as follows：By using the sample preparation box with V-shaped groove structure, concrete amount can be reduced, together
When, due to its V-shaped structure, take out the resistance smaller when concrete of cast, the more conducively taking-up of concrete.In addition,
The exterior panel and inside panel of sample preparation box can be detachably connected by screw, and sample preparation box entire in this way is detachably plurality of plates
Material can reduce space needed for storage, more convenient to carry and transport etc..And it can be by the way that handle be arranged, convenient for sample preparation box
It is mobile, and the disassembly and assembly to exterior panel.In addition, can also by the way that the structures such as corresponding threaded post, steel bar and drawstring are arranged,
The position of rock mass sample is adjusted by drawstring, on the one hand height can be adjusted convenient for trying rock mass in drawstring by the lifting of steel bar
The fine tuning of sample position；On the other hand it may also function as and rock mass sample lifted, can effectively avoid rock mass sample in cast concrete
Shi Fasheng sinkages；It is preferable to the binding effect of rock mass sample since drawstring is distributed in the surrounding of rock mass sample, and
It is more convenient for being finely adjusted it.
Description of the drawings
Fig. 1 is the 3-D view of carrying shear test sample preparation device of the present invention；
Fig. 2 is the 3-D view of steel bar；
Fig. 3 is the 3-D view of sample preparation box；
Fig. 4 is the 3-D view of L-shaped gage part；
Fig. 5 is the rock mass sample tied up after bundle rope and drawstring, i.e., carrying shear test method for making sample first of the present invention
Schematic diagram after step；
Fig. 6 is the schematic diagram after the 4th step of carrying shear test method for making sample of the present invention；
Fig. 7 is the schematic diagram after the 5th step of carrying shear test method for making sample of the present invention；
Fig. 8 is that the schematic diagram for cutting sample is taken in half taken out in the 6th step of carrying shear test method for making sample of the present invention；
Fig. 9 is the schematic diagram after the 9th step of carrying shear test method for making sample of the present invention；
Figure 10 is entirely to take the schematic diagram for cutting sample；
Figure 11 is the front view of Figure 10；
Figure 12 is the enlarged diagram of regional area A in Fig. 6；
In figure label for：Sample preparation box 1, exterior panel 11, screw hole 111, inside panel 12, handle 2, threaded post 3, adjusting nut
31, steel bar 4, adjustment hole 41, pulling eye 42, drawstring 5, rock mass sample 6, structural plane 61, bundle rope 7, L-shaped gage 8, the first side measuring surface
81, second in measuring surface 82, concrete 9, screw 10, first measuring surface height H1, the height H2 of the second side measuring surface, two
Gap H3 between the concrete of side.
Specific implementation mode
The present invention is further described with reference to the accompanying drawings and detailed description.
Carrying shear test sample preparation device of the present invention, including sample preparation box 1, the sample preparation box 1 include two pieces of exterior panels 11
With two pieces of inside panels 12, for two pieces of inside panels 12 by the way that one side connects is V-shaped, two pieces of exterior panels 11 are correspondingly arranged at two pieces
The both sides of inside panel 12 surround the V-shaped groove structure of a upper opening by two pieces of inside panels 12 and two pieces of exterior panels 11；It is described outer
It is to be detachably connected between siding 11 and inside panel 12.
Wherein, the side that two pieces of inside panels 12 connect is detachably connected by screw 10 or is articulated and connected by hinge.
Can be easy to disassemble at polylith tablet using the connection of screw 10, with Portable belt；Certainly, using the hinged form of hinge can also realize by
Two pieces of inside panels 12 stack after overturning, with Portable belt.
In the present invention, two pieces of exterior panels 11 and two pieces of inside panels 12 should carry out group according to shown in attached drawing 1 and attached drawing 3
Dress, also, should be guaranteed that the leakproofness of entire V-shaped groove structure is preferable after assembling, it is avoided that the leakage of later stage cast concrete is asked
Topic；Certainly, after assembling, each edge of the upper opening of entire V-shaped groove structure should be concordant for exterior panel 11 and inside panel 12,
More convenient leveling when in order to pour into a mould concrete.
In addition, in order to easily facilitate mobile and dismounting sample preparation box 1, outside that further can be opposite in two pieces of exterior panels 11
On be provided with handle 2；The structure of handle 2 can be set to L-shaped bending plate shown in attached drawing, and handle 2 passes through spiral shell with exterior panel 11
Nail is detachably connected.
In addition, the present invention is further provided with threaded post 3, steel bar 4 and drawstring 5 on the basis of above structure；Screw thread
One end of column 3 is connected on exterior panel 11 on side corresponding with the upper opening of V-shaped groove structure, and other end is straight up
Extend；There are four threaded posts 3, and four threaded posts 3 are parallel to each other, and four 3 rectangular distributions of threaded post；There are two steel bars 4,
The both ends of each steel bar 4 are respectively arranged with adjustment hole 41, and there are two the pulling eyes being spaced apart for setting between two adjustment holes 41
42；The adjustment hole 41 at both ends is respectively fitted in a threaded post 3 on same steel bar 4, is set in the threaded post 3 below adjustment hole 41
There is adjusting nut 31；Two steel bars 4 are set parallel to each other；Each pulling eye 42 is correspondingly arranged a drawstring 5, and the one of drawstring 5
End is connect with pulling eye 42, and the other end of drawstring is connect with rock mass sample 6.Wherein, screw hole can be pre-set on exterior panel 11
111, so that one end of threaded post 3 is installed；Threaded post 3 and 31 screw-thread fit of adjusting nut, in this way by adjusting adjusting spiral shell
The height of corresponding steel bar 4 can be adjusted in mother 31, and then realizes the adjusting to drawstring 5, and finally realizes and try rock mass
The adjustment of sample 6.It is above-mentioned to be connected on four positions of rock mass sample 6 simultaneously using by four drawstrings 5, it can be given on four direction
Rock mass sample 6 applies pulling force, and can overcome the gravity of rock mass sample 6, makes it that can be suspended in the center position of sample preparation box 1, passes through
Drawing of hanging using four drawstrings 5 to rock mass sample 6, rock mass sample 6 settles when on the one hand can avoid later stage cast concrete
The case where；On the other hand, the rotation of rock mass sample 6 can also be prevented；Moreover, can also be by adjusting each adjusting nut, to rock mass
The position of sample 6 is finely adjusted.Certainly, theoretically, more drawstrings 5 also can be used in the present invention, to enhance to rock mass sample 6
Binding effect.
In addition, for the ease of being attached between drawstring 5 and rock mass sample 6, bundle rope 7, the bundle rope 7 can be further set
Rock mass sample 6 is bound by right-angled intersection binding mode, and right-angled intersection is located at 6 top and bottom of rock mass sample；Four
Drawstring 5 is connected to four bending parts of 6 top bundle rope 7 of rock mass sample with one end that rock mass sample 6 is correspondingly connected with.
Certainly, common rope can be used in above-mentioned drawstring 5 and/or bundle rope 7, and thin wire can also be used；Wherein preferably use
Thin wire convenient for bending, while having preferable fixed effect because its is flexible.In addition, bundle rope 7 also can be used disposably
Band replaces.
In addition, in order to more effectively constrain rock mass sample 6, L-shaped gage 8 may further be provided, L-shaped gage 8 is usual
There are two settings, between being ridden over two pieces of exterior panels 11, is pressed from both sides rock mass sample 6 by a side on two L-shaped gages 8
Firmly, prevent rock mass sample from rotating, specific mounting structure can refer to shown in attached drawing 1 and attached drawing 6.It is furthermore preferred that for quantitative tune
The height of whole rock mass sample 6, the height H1 that the first side measuring surface 81 can be arranged are 5mm, the height H2 of the second side measuring surface 82
For 10mm；In this way, adjust rock mass sample 6 height and position when, can be by adjusting adjusting nut 31 after, make on rock mass sample 6
Structural plane 61 be adjusted to the first of L-shaped gage 8 in measuring surface 81 or second measuring surface 82 upper edge along keeping flushing,
Such as shown in attached drawing 12, in this way, after pouring into a mould concrete, distance of the structural plane 61 apart from the surface of concrete will be equal to L-shaped
The height value of corresponding measuring surface on gage 8, for example, the first side measuring surface 81 is adjacent to respectively in rock mass sample 6 when using
When both sides, distance of the corresponding structural plane 61 apart from the surface of concrete is H1, naturally, at this time between the concrete of both sides
Gap H3 is then equal to 2 × H1.
In addition, the present invention also provides a kind of carrying shear test method for making sample, filled using carrying shear test sample preparation of the present invention
It sets, and carries out in accordance with the following steps, and specifically can refer to the structural representation after the completion of multiple steps shown in attached drawing 5 to attached drawing 12
Figure.
The first step is marked in 61 place plane of 6 surface of rock mass sample and structural plane with marking pen and intends carrying out carrying shear test
Direction, then rock mass sample 6 is bound 7 according to right-angled intersection binding mode with bundle rope, right-angled intersection bundle rope 7 and label
Carrying shear test direction is in 45 °, later binds wherein one end of four drawstrings 5 in right-angled intersection bundle rope 7 in rock mass sample 6 respectively
Four bending parts at top；Using marking pen label rock mass sample 6 and structural plane 61, sheared in order to which the later stage looks for structural plane 61
Direction and the position of later stage adjustment rock mass sample 6.
Second step, assembling sample preparation box 1 and installation threaded post 3 and steel bar 4, sample preparation box 1 is placed on level ground；Two
One layer of releasing agent is smeared in the inside face for the V-shaped groove structure that block inside panel 12 and two pieces of exterior panels 11 surround；Lead in assembling process
It crosses dismountable screw 10 and is coupled for later stage dismounting.In addition, the effect of releasing agent was demoulded for the later stage, it is usually optional
With lubricating oil or other similar materials.It is furthermore preferred that after smearing one layer of releasing agent, one layer can be also covered again on releasing agent
Paper more conducively demoulds, and paper selects paraffin paper or common paper.
Rock mass sample 6 is placed in the middle part of V-shaped groove structure by third step, and keeps direction and the exterior panel 11 of carrying shear test
Direction it is consistent；The direction of signified carrying shear test is depending on 61 development characteristics of structural plane herein, it is therefore desirable in conjunction with
Depending on 61 developmental state of actual structural plane.
4th step, the drawstring 5 that one end is already connected on rock mass sample 6 the other end connect respectively with corresponding pulling eye 42
It connects, then the first side measuring surface 81 of two L-shaped gages 8 is adjacent to respectively in the both sides of rock mass sample 6；Later by adjusting spiral shell
Mother 31 adjusts the height of steel bar 4, and the length after being bound simultaneously by adjusting four drawstrings 5, make the structural plane 61 of rock mass sample 6 with
The upper edge of first side measuring surface 81 of two L-shaped gages 8 is flushed along holding, and makes rock mass in 1 middle position of sample preparation box；At this
In step, so that rock mass sample 6 reaches ideal position, institute in attached drawing 6 should specifically can refer to by adjusting adjusting nut 31
Show.
5th step injects concrete 9 into V-shaped groove structure, and marginal not enters concrete edge and uses the tool vibrated concrete that vibrates,
Stop injection concrete when concrete and the upper opening flush of V-shaped groove structure, then smooth concrete surface.
6th step solidifies after the concrete 9 of previous step injection and after reaching certain structural strength, removes drawstring 5, steel bar 4
With threaded post 3, unscrew the screw 10 on exterior panel 11, then produced half is taken and cuts sample taking-up.
Threaded post 3 after being dismantled in 6th step and steel bar 4 are repeated second step by the 7th step, to carry out secondary assembling.
Produced half is taken and cuts sample and be placed upside down on steel bar 4 by the 8th step, and the first side of two L-shaped gages 8 is measured
Face 81 is adjacent to respectively in the both sides of rock mass sample 6；4 height of steel bar is adjusted by adjusting nut 31 later, makes the knot of rock mass sample 6
Structure face 61 is flushed with the upper edge of the first side measuring surface 81 of two L-shaped gages 8 along holding, and rock mass is kept to be occupied in sample preparation box 1
Middle position, while adjusting the concrete 9 that top has solidified and being aligned with lower section sample preparation box 1；In this step, pass through two steel bars 4
Support is taken for half cuts sample, therefore should realize the adjusting to 4 height of steel bar by adjusting adjusting nut 31.It is finally reached adjustment
The concrete 9 that top has solidified is aligned with lower section sample preparation box 1, with the concrete 9 for ensuring the concrete first poured into a mould 9 with pouring into a mould later
The consistency in direction can be kept, meanwhile, the upper edge edge of the first side measuring surface 81 of holding structure face 61 and two L-shaped gages 8
Holding flushes.
9th step repeats the 5th step, is taken with cast and cuts sample the other half concrete 9.
Tenth step solidifies after the concrete 9 of previous step injection and after reaching certain structural strength, first removes steel bar 4 and spiral shell
Then line column 3 dismantles two pieces of exterior panels 11 and two pieces of inside panels 12, you can produced entire take is cut sample taking-up.
Entire take is cut sample placement certain time by the 11st step, makes the coagulation poured into a mould respectively in the 5th step and the 9th step
Soil 9, which reaches entire to take after sufficient intensity, to be cut sample and is put into carrying shear test instrument, cuts the bundle rope 7 on rock mass sample 6, i.e.,
It can carry out carrying shear test.
Wherein, it is at least spaced after the 5th step 24 hours and carries out the 6th step again；It is small it to be at least spaced 24 after the 9th step
When carry out the tenth step again.Pass through solidification in 24 hours, it can be ensured that the concrete after cast has certain structural strength.
In addition, after above-mentioned 7th step, it, can also be first by the second side measuring surface 82 of two L-shaped gages 8 before the 8th step
Be individually positioned at the threaded post 3 of both sides, later by adjusting nut 31 adjust steel bar 4 height to the second side measuring surface 82
Upper edge is along concordant.This benefit is can be realized to the steel bar 4 of both sides preliminary levelling, it is made substantially to adjust to sustained height, with
It reduces and places half of amount trimmed taken after cutting sample；Moreover, the height H2 of the second side measuring surface 82 ought be used for 10mm, and first
When the height H1 of side measuring surface 82 is the structure of 5mm, in this way the step of, it can be ensured that entire take of final molding is cut in sample
Structural plane 61 on rock mass sample 6 is located just at the middle of the gap H3 between the concrete of both sides；Such as shown in attached drawing 11；
Such position relationship is more conducive to later stage progress carrying shear test.
Claims (9)
1. carrying shear test sample preparation device, including sample preparation box (1), it is characterised in that：The sample preparation box (1) includes two pieces of exterior panels
(11) and two pieces of inside panels (12), for two pieces of inside panels (12) by the way that one side connects is V-shaped, two pieces of exterior panels (11) are corresponding
It is arranged in the both sides of two pieces of inside panels (12), a upper opening is surrounded by two pieces of inside panels (12) and two pieces of exterior panels (11)
V-shaped groove structure；It is to be detachably connected between the exterior panel (11) and inside panel (12)；The carrying shear test sample preparation device also wraps
Include threaded post (3), steel bar (4) and drawstring (5)；One end of threaded post (3) is connected to upper with V-shaped groove structure on exterior panel (11)
Portion is open on corresponding side, and other end extends straight up；There are four threaded posts (3), and four threaded posts (3) are put down each other
Row, and four rectangular distributions of threaded post (3)；There are two steel bars (4), and the both ends of each steel bar (4) are respectively arranged with adjusting
Hole (41), there are two the pulling eyes (42) being spaced apart for setting between two adjustment holes (41)；The tune at both ends on same steel bar (4)
Knothole (41) is respectively fitted on a threaded post (3), and adjusting nut is equipped in the threaded post (3) below adjustment hole (41)
(31)；Two steel bars (4) are set parallel to each other；Each pulling eye (42) is correspondingly arranged a drawstring (5), and the one of drawstring (5)
End is connect with pulling eye (42), and the other end of drawstring is connect with rock mass sample (6).
2. carrying shear test sample preparation device as described in claim 1, it is characterised in that：The side that two pieces of inside panels (12) connect is logical
Screw (10) is crossed to be detachably connected or be articulated and connected by hinge.
3. carrying shear test sample preparation device as described in claim 1, it is characterised in that：In the opposite outside of two pieces of exterior panels (11)
On be provided with handle (2), handle (2) is detachably linked with exterior panel (11) by screw.
4. carrying shear test sample preparation device as described in claim 1, it is characterised in that：Further include bundle rope (7), the bundle restricts (7)
Rock mass sample (6) are bound by right-angled intersection binding mode, and right-angled intersection is located at the top and bottom of rock mass sample (6)；
Four drawstrings (5) are connected to four of bundle rope (7) at the top of rock mass sample (6) with one end that rock mass sample (6) is correspondingly connected with
Bending part.
5. carrying shear test sample preparation device as claimed in claim 4, it is characterised in that：The drawstring (5) and bundle rope (7) are iron
Silk or rope.
6. carrying shear test sample preparation device as described in claim 1, it is characterised in that：Further including two can freely ride over outside two pieces
L-shaped gage (8) between siding (11), the height H1 of the first side measuring surface (81) is 5mm on each L-shaped gage (8), second
The height H2 of side measuring surface (82) is 10mm.
7. carrying shear test method for making sample, it is characterised in that：Using the carrying shear test described in any one of the claims 1 to 6
Sample preparation device, and carry out in accordance with the following steps：
The first step is marked on rock mass sample (6) surface and structural plane (61) place plane with marking pen and intends carrying out carrying shear test
Direction, then rock mass sample (6) are bound according to right-angled intersection binding mode with bundle rope (7), right-angled intersection bundle rope (7) with
The carrying shear test direction of label is in 45 °, binds wherein one end of four drawstrings (5) respectively tie rope (7) in right-angled intersection later
Four bending parts at the top of rock mass sample (6)；
Second step, assembling sample preparation box (1) and installation threaded post (3) and steel bar (4), sample preparation box (1) is placed on level ground；
One layer of releasing agent is smeared in the inside face for the V-shaped groove structure that two pieces of inside panels (12) and two pieces of exterior panels (11) surround；
Rock mass sample (6) is placed in the middle part of V-shaped groove structure by third step, and keeps direction and the exterior panel (11) of carrying shear test
Direction it is consistent；
4th step, the drawstring (5) being already connected to one end on rock mass sample (6) the other end respectively with corresponding pulling eye (42) even
It connects, then the first side measuring surface (81) of two L-shaped gages (8) is adjacent to respectively in the both sides of rock mass sample (6)；Pass through later
Adjusting nut (31) adjusts steel bar (4) height, and makes rock mass sample simultaneously by adjusting the length after four drawstrings (5) bindings
(6) structural plane (61) is flushed with the upper edge of the first side measuring surface (81) of two L-shaped gages (8) along holding, and makes rock mass
In sample preparation box (1) middle position；
5th step injects concrete (9) into V-shaped groove structure, and marginal not enters concrete edge using the tool vibrated concrete that vibrates, directly
Stop injection concrete when to concrete and the upper opening flush of V-shaped groove structure, then smooth concrete surface；
6th step solidifies after the concrete (9) of previous step injection and after reaching certain structural strength, removes drawstring (5), steel bar
(4) and threaded post (3), unscrew the screw (10) on exterior panel (11), then produced half is taken and cuts sample taking-up；
Threaded post (3) after being dismantled in 6th step and steel bar (4) are repeated second step by the 7th step, to carry out secondary assembling；
Produced half is taken and cuts sample and be placed upside down on steel bar (4) by the 8th step, and the first side of two L-shaped gages (8) is measured
Face (81) is adjacent to respectively in the both sides of rock mass sample (6)；Steel bar (4) height is adjusted by adjusting nut (31) later, makes rock mass
The structural plane (61) of sample (6) is flushed with the upper edge of the first side measuring surface (81) of two L-shaped gages (8) along holding, and is protected
Rock mass is held in sample preparation box (1) middle position, while adjusting the concrete (9) that top has solidified and being aligned with lower section sample preparation box (1)；
9th step repeats the 5th step, is taken with cast and cuts sample the other half concrete (9)；
Tenth step solidifies after the concrete (9) of previous step injection and after reaching certain structural strength, first removes steel bar (4) and spiral shell
Line column (3) then dismantles two pieces of exterior panels (11) and two pieces of inside panels (12), you can sample is cut in produced entirely taking and is taken
Go out；
Entire take is cut sample placement certain time by the 11st step, makes the concrete (9) poured into a mould respectively in the 5th step and the 9th step
Reach entire to take after sufficient intensity and cut sample and be put into carrying shear test instrument, cuts the bundle rope (7) on rock mass sample (6),
It can carry out carrying shear test.
8. carrying shear test method for making sample as claimed in claim 7, it is characterised in that：It is at least spaced after the 5th step 24 hours
The 6th step is carried out again；It is at least spaced after the 9th step 24 hours and carries out the tenth step again.
9. carrying shear test method for making sample as claimed in claim 8, it is characterised in that：In second step, one layer of releasing agent is smeared
Later, one layer of paper can also be covered again on releasing agent；It, can be first by two L-shaped gages before the 8th step after the 7th step
(8) the second side measuring surface (82) is individually positioned at the threaded post (3) of both sides, adjusts steel bar by adjusting nut (31) later
(4) highly to concordant with the upper edge of the second side measuring surface (82) edge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610273892.1A CN105699154B (en) | 2016-04-28 | 2016-04-28 | Carrying shear test sample preparation device and method for making sample |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610273892.1A CN105699154B (en) | 2016-04-28 | 2016-04-28 | Carrying shear test sample preparation device and method for making sample |
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| CN105699154B true CN105699154B (en) | 2018-07-24 |
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| CN107179235B (en) * | 2017-04-25 | 2018-02-13 | 中国地质大学（武汉） | A kind of fixing device and method for installing Multiple Shape irregular structure interview sample |
| CN117330395B (en) * | 2023-12-01 | 2024-04-09 | 中国电建集团成都勘测设计研究院有限公司 | Model box for simulating viscoelastic boundary |
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| CN103645081A (en) * | 2013-12-11 | 2014-03-19 | 中国地质大学（武汉） | Sawtooth-shaped structure surface sample making mould with adjustable angle and size |
| CN204085972U (en) * | 2014-08-01 | 2015-01-07 | 中国地质大学（武汉） | A kind of direct shear test associating sampling instrument |
| CN104865108A (en) * | 2015-01-13 | 2015-08-26 | 中国水利水电科学研究院 | Sample production apparatus suitable for jointed rock direct shear test, sample production and shearing apparatus, and sample production and shearing test method |
| CN205607725U (en) * | 2016-04-28 | 2016-09-28 | 中国电建集团成都勘测设计研究院有限公司 | Take and cut experimental system appearance device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4622923B2 (en) * | 2006-04-05 | 2011-02-02 | 積水ハウス株式会社 | Shear measuring machine |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645081A (en) * | 2013-12-11 | 2014-03-19 | 中国地质大学（武汉） | Sawtooth-shaped structure surface sample making mould with adjustable angle and size |
| CN204085972U (en) * | 2014-08-01 | 2015-01-07 | 中国地质大学（武汉） | A kind of direct shear test associating sampling instrument |
| CN104865108A (en) * | 2015-01-13 | 2015-08-26 | 中国水利水电科学研究院 | Sample production apparatus suitable for jointed rock direct shear test, sample production and shearing apparatus, and sample production and shearing test method |
| CN205607725U (en) * | 2016-04-28 | 2016-09-28 | 中国电建集团成都勘测设计研究院有限公司 | Take and cut experimental system appearance device |
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