CN108426786B - A kind of shear box suitable for vertical ring shear test - Google Patents

A kind of shear box suitable for vertical ring shear test Download PDF

Info

Publication number
CN108426786B
CN108426786B CN201810234303.8A CN201810234303A CN108426786B CN 108426786 B CN108426786 B CN 108426786B CN 201810234303 A CN201810234303 A CN 201810234303A CN 108426786 B CN108426786 B CN 108426786B
Authority
CN
China
Prior art keywords
shear
bottom plating
cover
plate
top cover
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.)
Active
Application number
CN201810234303.8A
Other languages
Chinese (zh)
Other versions
CN108426786A (en
Inventor
宁奕冰
唐辉明
蔡毅
范志强
张俊荣
申培武
何成
安鹏举
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Geosciences
Original Assignee
China University of Geosciences
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China University of Geosciences filed Critical China University of Geosciences
Priority to CN201810234303.8A priority Critical patent/CN108426786B/en
Publication of CN108426786A publication Critical patent/CN108426786A/en
Application granted granted Critical
Publication of CN108426786B publication Critical patent/CN108426786B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/24Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details

Abstract

The invention discloses a kind of shear boxs suitable for vertical ring shear test, including bottom plate, outer cover and top cover, the bottom plate includes the Outer Bottom Plating and inner bottom plating being slidably installed together, the inner bottom plating is fixed, hoop rotation can occur for the Outer Bottom Plating, the inner bottom plating is equipped with soil sample fixed blade, the Outer Bottom Plating is equipped with shear plate, the lower end of the Outer Bottom Plating and outer cover is fixed together, vertical guide is equipped in the outer cover, the position of the vertical guide and shear plate is staggered, the top cover includes outer top cover and the internal head cover being slidably installed together, the outer wall of the outer top cover is equipped with vertical guide groove compatible with vertical guide, the bottom of the outer top cover is equipped with shearing board slot compatible with shear plate.Shear history of the Rock And Soil under vertical annular shear action can be achieved in the present invention, guarantees to cut displacement at shear surface and shearing stress distribution is uniform, can take into account two kinds of functions of sample preparation and test, provide shearing force using stepless speed-change motor, improve test accuracy.

Description

A kind of shear box suitable for vertical ring shear test
Technical field
The present invention relates to soil test equipment technical field more particularly to a kind of cutting suitable for vertical ring shear test Cut box.
Background technique
The shearing strength characteristic for studying the soil body, the mechanical mechanism that Analysis of Slope Stability, geological disaster occur are studied And its side slope progressive destruction process study etc. is of great significance.
The shearing strength characteristic of Rock And Soil can generally be obtained by test in situ or laboratory soil test, shearing examination in situ It is big to test size, since Rock And Soil is to be undisturbed sample, obtained experimental result is closest with engineering practice, but shearing in situ Test has the shortcomings that at high cost, the period is long, instrument is heavy.In contrast to this, although the representativeness of laboratory test soil sample is poor, It is more to be widely used in the research of the shearing strength characteristic of the soil body since its is at low cost, the period is short, lower-price characteristic In.
Currently, commonly the device of measurement soil shear strength is along fixed shear surface, in the effect of different normal force Under measure several shearing strength values.During actual shearing, the shear surface of sample persistently reduces, and the direct stress on shear surface It is unevenly distributed, not can reflect stress state locating for true Rock And Soil.In addition, direct shear test and triaxial shear test by The limitation of instrument, shear displacemant have limitation, are unable to satisfy and resist to the soil body under the conditions of the big displacements such as high-speed shadowgraph technique Cut the numerical evaluation of intensity and residual strength.Therefore, it is necessary to develop the special soils that can be realized big shear displacemant experimental condition Construction equipment and corresponding experimental technique, wherein ring shear apparatus is one of the most effective means that can satisfy both requirements.
However there is an inherent shortcoming in existing ring shear apparatus: since shear surface is an annulus, and deposit radially In one fixed width, therefore it will lead to the cutter shearing line speed on shear surface radially and be distributed inconsistent, the shearing position in same time Move inconsistent, this will all make in shear history shear stress and cuts displacement being unevenly distributed on shear surface, so that cutting Cut through Cheng Buneng reduction actual conditions.
In order to solve problem above, a kind of ring shear test instrument suitable for vertical shearing face is suggested.However, public at present The shear box in the ring shear apparatus of vertical shearing face opened there are problems, such as the torque application device course of work are excessively cumbersome, And the shear rate of test process can not be controlled, it is reduced so as to cause the precision for being applied to soil body sample up cut shear, Influence the accuracy of test result;Sample preparation additionally needs special equipment;It needs to be inserted in again after removing sample preparation backplate after the completion of sample preparation In shear box, therefore more loose native stone body can not be tested using the ring shear apparatus.
Summary of the invention
In view of this, the embodiment provides a kind of and sample preparation and tests, and by novel connection and A kind of shear box suitable for vertical ring shear test that the kind of drive is tested is, it can be achieved that ring to Rock And Soil vertical shearing face Scissor test, and can be realized the accurate control to shear rate, improve the stability of vertical ring shear test.Cooperation correlative link is cut Tester is, it can be achieved that Rock And Soil under the conditions of different normal pressures, confining pressure and under different shear rate in big shear displacemant condition Under peak shear strength, residual strength and strain softening process research, filled up vertical shearing face ring scissor test instrument field Blank.
The embodiment of the present invention provides a kind of shear box suitable for vertical ring shear test, including bottom plate, outer cover, top cover and Top cover hold-down bars, the bottom plate include the Outer Bottom Plating and inner bottom plating being slidably installed together, and the inner bottom plating is fixed, described Hoop rotation can occur for Outer Bottom Plating, and the inner bottom plating is equipped with soil sample fixed blade, and the Outer Bottom Plating is equipped with shear plate, described The lower end of Outer Bottom Plating and outer cover is fixed together, and vertical guide, the position of the vertical guide and shear plate are equipped in the outer cover Set and be staggered, the top cover includes outer top cover and the internal head cover being slidably installed together, the outer wall of the outer top cover be equipped with it is vertical The bottom of the compatible vertical guide groove of guide rail, the outer top cover is equipped with shearing board slot compatible with shear plate, will be wait shear examination Sample is put into shear box, and the top cover is inserted into outer cover, vertical guide groove on the outer top cover and shearing board slot respectively with erect Direction guiding rail and shear plate are stuck, and then Outer Bottom Plating, outer cover and outer top cover is made to form external circumferential turning cell, the inner bottom plating Internal stationary room is formed with internal head cover, the internal head cover is internally provided with interior conducting bar;
The Outer Bottom Plating includes outside plate and outer extension plate, and the outer extension plate is located at the inside of outside plate, and is integrally formed, institute Stating inner bottom plating includes inner panel and interior extension plate, and the interior extension plate is located at the outside of inner panel, and is integrally formed, the interior extension plate It is oppositely arranged with outer extension plate, guide groove is provided on the inside of the interior extension plate, the inside of the outer extension plate is equipped with and guide groove phase The conducting bar of adaptation, the conducting bar can slide in guide groove, and then make Outer Bottom Plating that hoop rotation occur relative to inner bottom plating;
The inner bottom plating by be fixed on a pedestal realize it is fixed, the centre of the pedestal have one protrusion cylinder Shape cushion cap, the inner bottom plating are bolted on cylindrical cushion cap;
For the hoop rotation of the Outer Bottom Plating by shearing dynamical system driving, the shearing dynamical system includes that shearing is hollow Bearing is connected in the middle part of gear wheel, driver pinion, stepless speed-change motor, frequency converter, gear wheel end support bearing and gear wheel, The frequency converter is fixed on the base, and the frequency converter connects stepless speed-change motor, the active rotating shaft of the electrodeless variable-speed motor Upper connection driver pinion, the driver pinion are engaged with hollow gear wheel is sheared, and drive the hollow bull gear drive of shearing, The Outer Bottom Plating is fixed on the hollow gear wheel of shearing, and the rotation of the hollow gear wheel of shearing drives the rotation of Outer Bottom Plating, institute It states and shears the surrounding that hollow gear wheel is located on cylindrical cushion cap, be arranged between the hollow gear wheel of shearing and cylindrical cushion cap Have and connect bearing in the middle part of gear wheel, the lower part of the hollow gear wheel of shearing passes through gear wheel end support bearing and pedestal phase Even, guarantee that the stabilization for shearing hollow gear wheel is freely rotated, the frequency converter can output revolving speed to stepless speed-change motor into Row stable regulation, and then realize the shear history under different shear rate;
Further, the length of the interior extension plate cross section and the length of outer extension plate cross section are consistent, described interior The width of plate cross section and the width of outside plate cross section are consistent, and bed course, institute are equipped at the gap of the Outer Bottom Plating and inner bottom plating The frictional force that Outer Bottom Plating is generated along inner bottom plating sliding can be reduced by stating bed course.
Further, the internal head cover includes inner cover plate and extension plate, and the extension plate is located at the outside of inner cover plate, and with Inner cover plate is integrally formed, and the lower section of the extension plate is equipped with the sliding slot being recessed inwardly, and the outer top cover is located at the lower section of extension plate, And the top of outer top cover is equipped with draw runner compatible with sliding slot, the draw runner can slide in sliding slot, and then keep outer top cover opposite Hoop rotation occurs in internal head cover.
Further, the length of the outer top cover cross section is consistent with the length of extension plate cross section, the outer top cover The width of cross section and the sum of the width of extension plate cross section are consistent with the width of inner cover plate cross section, the outer top cover and interior Bed course is equipped at the gap of top cover, the bed course can reduce the frictional force that outer top cover is generated along internal head cover sliding.
Further, the top of the internal head cover is provided with horizontal bubble instrument, is provided on the inner bottom plating everywhere circumferentially The discharge outlet of distribution is provided with downwards rhone along discharge outlet, drainpipe is laid in the rhone, is equipped with one at the discharge outlet Layer filter screen, the discharge outlet are equipped with a sealing cover, and the sealing cover can be carried out rotation, so realize the opening of discharge outlet with Sealing, for realizing draining shear history and undrained shear process.
Further, the top cover hold-down bars includes barred body, support plate, hold-down bars plush copper, and the hold-down bars plush copper is fixed In groove in the middle part of the cylindrical cushion cap, support plate side surrounding is uniformly arranged there are four support plate guide groove, and described outer Vertical guide in cover matches, and the stick end of the barred body is provided with stick end guide groove, with the interior conducting bar being arranged in the internal head cover Match, the guide groove and hold-down bars plush copper are used for when instrument is not used for fixing barred body, the support plate to institute It states top cover and support is provided.
Compared with prior art, the invention has the following advantages:
1, shear box provided by the present invention can generate vertical cricoid shear surface, i.e. shear surface in shear history Perpendicular to horizontal plane, enable to the shear displacemant in shear history on shear surface equal with shear velocity, guarantee shear stress with Shear displacemant being uniformly distributed on shear surface, makes test result be more nearly actual conditions.
2, shear box provided by the present invention is compared with existing disclosed vertical shearing face ring shear apparatus shear box, inside and outside shearing Box uses Novel connection type, can prevent the soil body from leaking out in shear history, and can be effectively reduced inside and outside shear box The friction generated is relatively rotated, frictional heat generation is reduced, reduces energy consumption of electrical machinery, guarantees the stabilization hoop rotation of external circumferential fluid shear chamber And internal motionless room is opposing stationary, improves the operation stability of testing equipment.
3, for shear box provided by the present invention compared with existing disclosed vertical shearing face ring shear apparatus shear box, use is electrodeless Variable speed electric motors, particularly and frequency converter carry out power input to shear box, can be realized the accurate control to shear rate, improve test Precision.
4, shear box provided by the present invention compared with existing disclosed vertical shearing face ring shear apparatus shear box, take into account sample preparation With two kinds of functions of test, without additional sample making apparatus, operating process is more convenient, and can be to the soil of various loosening degrees Body carries out ring shear test, expands the scope of application of existing vertical ring shear apparatus.
5, shear box provided by the present invention is reserved with normal direction pressurizing device installation space and axial confining pressure pressurizing device peace Bolt hole is filled, can be used cooperatively from mating ring shear test instrument, it can be achieved that under the conditions of different normal pressures, confining pressure and different shearing The research of peak shear strength, residual strength and strain softening process of the Rock And Soil under the conditions of big shear displacemant, is filled out under rate The blank in vertical shearing face ring scissor test instrument field is mended.
6. shear box main part provided by the present invention is attached using bolt with remaining device, easy to operate, just In disassembly, the instrument that can provide axis pressure with uniaxial compression test instrument etc. is used cooperatively, and the scope of application is wider.
Detailed description of the invention
Fig. 1 is an a kind of schematic diagram of the shear box suitable for vertical ring shear test of the present invention.
Fig. 2 is the schematic internal view of outer cover and bottom plate in Fig. 1.
Fig. 3 is a schematic diagram of top cover in Fig. 1.
Fig. 4 is a schematic diagram of Fig. 1 insole board.
Fig. 5 is a schematic diagram of top cover hold-down bars in Fig. 1.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is further described.
Referring to FIG. 1, the embodiment provides a kind of shear box suitable for vertical ring shear test, including bottom plate 1, outer cover 2, top cover 3 and top cover hold-down bars 10, the centre of shear box are reserved with a cylindrical hole, when instrument is not used, in cylindrical hole Top cover hold-down bars 10 is installed, when being tested, normal direction stress loading device is installed after top cover hold-down bars 10 is taken out.
Fig. 1,2 and 4 are please referred to, bottom plate 1 includes the Outer Bottom Plating 11 and inner bottom plating 12 being slidably installed together, 11 energy of Outer Bottom Plating Hoop rotation occurs, the hoop rotation of Outer Bottom Plating 11 preferably passes through shearing dynamical system driving, and Outer Bottom Plating 11 includes 111 He of outside plate Outer extension plate 112, the outer extension plate 112 is located at the inside of outside plate 111, and is integrally formed, and Outer Bottom Plating 11 is equipped with shear plate 113。
Inner bottom plating 12 is fixed, and inner bottom plating 12 is realized fixed by being fixed on a pedestal 4, and pedestal 4 is fixed on On ground, there is the cylindrical cushion cap 41 of a protrusion in the centre of pedestal 4, and the inner bottom plating 12 is bolted on cylinder and holds On platform 41, inner bottom plating 12 includes inner panel 121 and interior extension plate 122, and the interior extension plate 122 is located at the outside of inner panel 121, and one Body formed, inner bottom plating 12 is equipped with soil sample fixed blade 123.
The length of 112 cross section of length and outer extension plate of interior 122 cross section of extension plate is consistent, and the inner panel 121 is horizontal The width of 111 cross section of width and outside plate in section is consistent, and interior extension plate 122 and outer extension plate 112 are oppositely arranged, interior extension The inside of plate 122 is provided with guide groove 1221, and the inside of the outer extension plate 112 is equipped with conducting bar 1121 compatible with guide groove 1221, The conducting bar 1121 can slide in guide groove 1221, and then make Outer Bottom Plating 11 that hoop rotation, outer bottom occur relative to inner bottom plating 12 Bed course 13 is equipped at the gap of plate 11 and inner bottom plating 12, the bed course 13 can reduce what Outer Bottom Plating 11 was generated along the sliding of inner bottom plating 12 Frictional force.
Preferably, it is provided with the discharge outlet 6 being circumferentially distributed everywhere on inner bottom plating 12, is provided with rhone downwards along discharge outlet 6 7, and rhone 7 extends in the pedestal 4 of 12 lower section of inner bottom plating, is laid with drainpipe (not shown) in the rhone 7, One layer of filter screen (not shown) is equipped at the discharge outlet 6, the discharge outlet 6 is equipped with a sealing cover 8, the sealing cover 8 can be carried out rotation, and then realize the opening and sealing of discharge outlet 6, for realizing draining shear history and undrained shear process.
Shearing dynamical system 9 includes shearing hollow gear wheel 91, driver pinion 92, stepless speed-change motor 93, frequency converter 94, bearing 96 is connected in the middle part of gear wheel end support bearing 95 and gear wheel, the frequency converter 94 is fixed on pedestal 4, described Frequency converter 94 connects stepless speed-change motor 93, connects driver pinion 92, institute on the active rotating shaft of the electrodeless variable-speed motor 93 It states driver pinion 92 and is engaged with hollow gear wheel 91 is sheared, and the hollow gear wheel 91 of shearing is driven to rotate, the Outer Bottom Plating 11 It is fixed on the hollow gear wheel 91 of shearing, the rotation of the hollow gear wheel 91 of shearing drives the rotation of Outer Bottom Plating 11, described to cut Cut the surrounding that hollow canine tooth torus 91 is placed on cylindrical cushion cap 41, the hollow gear wheel 91 of shearing and cylindrical cushion cap 41 it Between be provided in the middle part of gear wheel and connect bearing 96, the lower part of the hollow gear wheel 91 of shearing passes through gear wheel end support axis It holds 95 to be connected with pedestal 4, guarantees that the stabilization for shearing hollow gear wheel 91 is freely rotated, the frequency converter 94 can be to variable speed The output revolving speed of motor 93 carries out stable regulation, and then realizes the shear history under different shear rate.
Fig. 1 and Fig. 2 are please referred to, Outer Bottom Plating 11 and the lower end of outer cover 2 are fixed together, and are equipped in the outer cover 2 and vertically lead The position of rail 21, the vertical guide 21 and shear plate 113 is staggered.
Fig. 1 and 3 are please referred to, top cover 3 includes the outer top cover 31 and internal head cover 32 being slidably installed together, and internal head cover 32 includes Inner cover plate 321 and extension plate 322, the extension plate 322 is located at the outside of inner cover plate 321, and is integrally formed with inner cover plate 321, The lower section of the extension plate 322 is equipped with the sliding slot 3221 being recessed inwardly, and internal head cover 32 is internally provided with interior conducting bar 323.
Preferably, the top of internal head cover 32 is provided with horizontal bubble instrument 5, to be corrected to soil sample upper flat degree, Guarantee that soil sample upper surface is smooth.
Outer top cover 31 is located at the lower section of extension plate 322, the length of outer 31 cross section of top cover and the length of 322 cross section of extension plate Spend consistent, the sum of width of the width of outer 31 cross section of top cover and 322 cross section of extension plate and 321 cross section of inner cover plate Width it is consistent, the top of outer top cover 31 is equipped with draw runner 311 compatible with sliding slot 3221, and draw runner 311 can be in sliding slot 3221 Interior sliding, and then make outer top cover 31 that hoop rotation occur relative to internal head cover 32, it is set at the gap of outer top cover 31 and internal head cover 32 There is bed course 33, the bed course 33 can reduce the frictional force that outer top cover 31 is generated along the sliding of internal head cover 32.
The outer wall of outer top cover 31 is equipped with vertical guide groove compatible with vertical guide 21, and the bottom of the outer top cover 31 is equipped with Shearing board slot (not shown) compatible with shear plate 113, sample to be sheared is put into shear box, by the top cover 3 It is inserted into outer cover 2, the vertical guide groove and shearing board slot on the outer top cover 31 are stuck in vertical guide 21 and shear plate 113 respectively Together, and then Outer Bottom Plating 11, outer cover 2 and outer top cover 31 is made to form external circumferential turning cell, meanwhile, soil sample fixed blade 123 is deep The soil body is penetrated deeply, it is fixed to play the role of the soil body, and the inner bottom plating 12 and internal head cover 32 form internal stationary room.
Referring to FIG. 5, top cover hold-down bars 10 includes barred body 103, support plate 102, hold-down bars plush copper 101, the hold-down bars Plush copper 101 is fixed in the groove at 41 middle part of cylindrical cushion cap, and the 102 side surrounding of support plate is uniformly arranged that there are four supports Vertical guide 21 in disk guide groove 1021, with the outer cover 2 matches, and the stick end of the barred body 103 is provided with stick end guide groove The interior conducting bar 323 being arranged in 1031, with the internal head cover 32 matches, the support plate guide groove 1021, stick end guide groove 1031 and Hold-down bars plush copper 101 is for fixing barred body 103, and support plate guide groove 1021 is stuck with vertical guide 21, stick end guide groove 1031 It is stuck with interior conducting bar 323, the support plate 102 is used to provide support to the top cover 3 when instrument is not used.
Using a kind of base of shear box progress sample preparation and the process of test suitable for vertical ring shear test provided by the invention This process is as follows:
Bolt hole 30 is installed for top cover 3 and axis pressure load system by the axial confining pressure pressurizing device reserved on top cover 3 first System is connected, and inner bottom plating 12 is fixed on a pedestal 4, extracts the top cover hold-down bars 10 in the middle part of shear box out, installs normal direction pressurizing device And preloaded, formed soil sample charge space after load sample, in shear box and tamped, by the upper surface of sample into Row leveling, the flatness of sample upper surface can be detected and be corrected by the horizontal bubble instrument 5 of 32 upper surface of internal head cover, be tried The height of shear plate 113 is not to be exceeded in the rammer raising degree of sample in principle, after when sample upper surface, flatness reaches requirement, lower caving The vertical guide 21 of 2 inner wall of vertical guide groove and outer cover is aligned by lid 3 when the lower edge of top cover 3 is soon contacted with outer cover 2, Shear plate 113 and shearing board slot alignment, make vertical guide groove and shearing board slot be stuck in one with vertical guide 21 and shear plate 113 respectively It rises, and then Outer Bottom Plating 11, outer cover 2 and outer top cover 31 is made to form external circumferential turning cell, meanwhile, joint axis pressure loading system makes Soil sample fixed blade 123 deeply penetrates the soil body, it is fixed to play the role of the soil body, 32 shape of the inner bottom plating 12 and internal head cover At internal stationary room, start electrodeless variable-speed motor 93, while shear velocity is set by frequency converter 94, so that electrodeless variable-speed motor 93 stabilizations of speed increase to preset value, and driver pinion 92 drives the hollow gear wheel 91 of shearing to be rotated, so that external Hoop rotation room follows the hollow gear wheel 91 of shearing to be rotated, and realizes the failure by shear to sample.
The embodiment provides a kind of and sample preparations in test, and by novel connection and the kind of drive into A kind of shear box suitable for vertical ring shear test of row test, it can be achieved that ring shear test to Rock And Soil vertical shearing face, and It can be realized the accurate control to shear rate, improve the stability of vertical ring shear test.Cooperate related ring shear test instrument, it can It realizes to peak value of Rock And Soil under the conditions of big shear displacemant is anti-under the conditions of different normal pressures, confining pressure and under different shear rate The blank in vertical shearing face ring scissor test instrument field has been filled up in the research for cutting intensity, residual strength and strain softening process.
Herein, the nouns of locality such as related front, rear, top, and bottom are to be located in figure with components in attached drawing and zero Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (6)

1. a kind of shear box suitable for vertical ring shear test, which is characterized in that fixed including bottom plate, outer cover, top cover and top cover Stick, the bottom plate include the Outer Bottom Plating and inner bottom plating being slidably installed together, and the inner bottom plating is fixed, the Outer Bottom Plating energy Occur hoop rotation, the inner bottom plating be equipped with soil sample fixed blade, the Outer Bottom Plating be equipped with shear plate, the Outer Bottom Plating with The lower end of outer cover is fixed together, and is equipped with vertical guide in the outer cover, and the position of the vertical guide and shear plate is staggered, institute Stating top cover includes outer top cover and the internal head cover being slidably installed together, and the outer wall of the outer top cover is equipped with to be adapted with vertical guide Vertical guide groove, the bottom of the outer top cover is equipped with shearing board slot compatible with shear plate, sample to be sheared is put into shearing In box, the top cover is inserted into outer cover, vertical guide groove on the outer top cover and shear board slot respectively with vertical guide and cut Cutting plate is stuck, and then Outer Bottom Plating, outer cover and outer top cover is made to form external circumferential turning cell, the inner bottom plating and internal head cover shape At internal stationary room, the internal head cover is internally provided with interior conducting bar;
The Outer Bottom Plating includes outside plate and outer extension plate, and the outer extension plate is located at the inside of outside plate, and is integrally formed, described interior Bottom plate includes inner panel and interior extension plate, and the interior extension plate is located at the outside of inner panel, and is integrally formed, the interior extension plate and outer Extension plate is oppositely arranged, and guide groove is provided on the inside of the interior extension plate, and the inside of the outer extension plate is equipped with to be adapted with guide groove Conducting bar, the conducting bar can slide in guide groove, and then make Outer Bottom Plating that hoop rotation occur relative to inner bottom plating;
The inner bottom plating by be fixed on a pedestal realize it is fixed, the centre of the pedestal have one protrusion cylinder hold Platform, the inner bottom plating are bolted on cylindrical cushion cap;
The hoop rotation of the Outer Bottom Plating includes shearing hollow canine tooth by shearing dynamical system driving, the shearing dynamical system Bearing is connected in the middle part of wheel, driver pinion, stepless speed-change motor, frequency converter, gear wheel end support bearing and gear wheel, it is described Frequency converter is fixed on the base, and the frequency converter connects stepless speed-change motor, is connected on the active rotating shaft of the electrodeless variable-speed motor Driver pinion is connect, the driver pinion is engaged with hollow gear wheel is sheared, and drives the hollow bull gear drive of shearing, described Outer Bottom Plating is fixed on the hollow gear wheel of shearing, and the rotation of the hollow gear wheel of shearing drives the rotation of Outer Bottom Plating, described to cut The surrounding that hollow gear wheel is located on cylindrical cushion cap is cut, is provided between the hollow gear wheel of shearing and cylindrical cushion cap big Bearing is connected in the middle part of gear, the lower part of the hollow gear wheel of shearing is connected with pedestal by gear wheel end support bearing, is protected The stabilization that card shears hollow gear wheel is freely rotated, the frequency converter can the output revolving speed to stepless speed-change motor stablize It adjusts, and then realizes the shear history under different shear rate.
2. a kind of shear box suitable for vertical ring shear test according to claim 1, which is characterized in that the interior extension The length of plate cross section and the length of outer extension plate cross section are consistent, the width of the inner panel cross section and outside plate cross section Width is consistent, bed course is equipped at the gap of the Outer Bottom Plating and inner bottom plating, it is sliding along inner bottom plating that the bed course can reduce Outer Bottom Plating The raw frictional force of movable property.
3. a kind of shear box suitable for vertical ring shear test according to claim 1, which is characterized in that the internal head cover Including inner cover plate and extension plate, the extension plate is located at the outside of inner cover plate, and is integrally formed with inner cover plate, the extension plate Lower section is equipped with the sliding slot being recessed inwardly, and the outer top cover is located at the lower section of extension plate, and the top of outer top cover is equipped with and sliding slot phase The draw runner of adaptation, the draw runner can slide in sliding slot, and then make outer top cover that hoop rotation occur relative to internal head cover.
4. a kind of shear box suitable for vertical ring shear test according to claim 3, which is characterized in that the outer top cover The length of cross section is consistent with the length of extension plate cross section, width and the extension plate cross section of the outer top cover cross section The sum of width is consistent with the width of inner cover plate cross section, and bed course, the pad are equipped at the gap of the outer top cover and internal head cover Layer can reduce the frictional force that outer top cover is generated along internal head cover sliding.
5. a kind of shear box suitable for vertical ring shear test according to claim 1, which is characterized in that the internal head cover Top be provided with horizontal bubble instrument, the discharge outlet being circumferentially distributed everywhere is provided on the inner bottom plating, is opened downwards along discharge outlet There is rhone, drainpipe is laid in the rhone, one layer of filter screen is equipped at the discharge outlet, the discharge outlet is equipped with one Sealing cover, the sealing cover can be carried out rotation, and then realize the opening and sealing of discharge outlet, for realizing draining shear history and Undrained shear process.
6. a kind of shear box suitable for vertical ring shear test according to claim 1, which is characterized in that the top cover is solid Determining stick includes barred body, support plate, hold-down bars plush copper, and the hold-down bars plush copper is fixed in the groove in the middle part of cylindrical cushion cap, institute It states support plate side surrounding and is uniformly arranged that there are four the vertical guides in support plate guide groove, with the outer cover to match, the stick The stick end of body is provided with stick end guide groove, matches with the interior conducting bar being arranged in the internal head cover, the guide groove and hold-down bars plush copper For fixing barred body, the support plate is used to provide support to the top cover when instrument is not used.
CN201810234303.8A 2018-03-21 2018-03-21 A kind of shear box suitable for vertical ring shear test Active CN108426786B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810234303.8A CN108426786B (en) 2018-03-21 2018-03-21 A kind of shear box suitable for vertical ring shear test

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810234303.8A CN108426786B (en) 2018-03-21 2018-03-21 A kind of shear box suitable for vertical ring shear test

Publications (2)

Publication Number Publication Date
CN108426786A CN108426786A (en) 2018-08-21
CN108426786B true CN108426786B (en) 2019-09-17

Family

ID=63158794

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810234303.8A Active CN108426786B (en) 2018-03-21 2018-03-21 A kind of shear box suitable for vertical ring shear test

Country Status (1)

Country Link
CN (1) CN108426786B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109557023B (en) * 2018-11-19 2021-02-12 河海大学 Pressure plate system capable of self-adaptive stretching deformation and use method thereof
CN111044390A (en) * 2019-12-30 2020-04-21 武汉科技大学 Shear box for testing structural surface anisotropy of rock sample and use method thereof
CN112378784B (en) * 2021-01-15 2021-03-26 西南交通大学 Portable soil body in-situ shear test device and test method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5817946A (en) * 1996-10-28 1998-10-06 Test Quip, Inc. Gyratory compaction apparatus for creating compression and shear forces in a sample material
CN106092756B (en) * 2016-06-07 2018-11-09 中国科学院武汉岩土力学研究所 A kind of hollow ring shear apparatus applying confining pressure
CN106644765A (en) * 2017-01-09 2017-05-10 浙江大学 Ring-shearing instrument used in indoor test pile soil interface and detection method
CN107036909B (en) * 2017-04-12 2018-07-06 中国地质大学(武汉) A kind of ring shear test instrument suitable for vertical shearing face
CN106840810B (en) * 2017-04-12 2018-05-15 中国地质大学(武汉) A kind of ring shear test and preparation of soil sample device suitable for vertical shearing face

Also Published As

Publication number Publication date
CN108426786A (en) 2018-08-21

Similar Documents

Publication Publication Date Title
CN108426786B (en) A kind of shear box suitable for vertical ring shear test
CN103149101B (en) Multifunctional triaxial creep testing machine with soil body pulling, pressing, twisting and shearing functions
CN108801804A (en) A kind of vertical shearing face ring scissor test instrument applying confining pressure
KR101155592B1 (en) Ring shear apparatus
JP6103658B2 (en) Triaxial testing equipment with pressure chamber of undrained one-side shear mechanism
CN105928803B (en) A kind of the shear strength parameter in-situ testing device and test method of the soil body
CN103149078A (en) Tension-compression-torsion-shearing coupling-based stress path triaxial apparatus
CN202544844U (en) Tester for determining rock drillability and drilling parameter sensitivity
CN106248557A (en) A kind of rock tension and compression ring cuts seepage flow coupling rheological test instrument
CN105158087B (en) A kind of improved method that rock shearing experiment is carried out using rock triaxial apparatus
CN105699189A (en) Annular shearing experiment equipment and testing method
CN106124341A (en) The field direct shear test sample preparation of a kind of Tu Yan interface and assay device
CN208206693U (en) A kind of shear box suitable for vertical ring shear test
CN111595682A (en) Large-scale complex surrounding rock condition anchoring and grouting integrated coupling effect test system and method
CN112160353A (en) Pile-soil interaction indoor test device under combined cyclic loading effect and installation method
CN108106941A (en) A kind of the rock testing system and test method of the effect of drive local load
CN105424490A (en) Device and method for monitoring rupture process of shale hydrofracture
Wang et al. Experimental Study of Prefabricated Crack Propagation in Coal Briquettes under the Action of a CO2 Gas Explosion
CN208502713U (en) A kind of high pressure dynamic leak stopping evaluation experimental provision
CN104020050B (en) Coarse-grained soil true triaxial test machine
CN208125530U (en) A kind of vertical shearing face ring scissor test instrument applying confining pressure
CN108931444A (en) A kind of rock hollow cylinder scene torsion shear apparatus and test method
CN109060504A (en) Soil and structure interface testing machine
CN206270179U (en) It is a kind of to lift the rock hollow cylinder torsional shear instrument that moment of torsion applies precision
CN110261234B (en) Fractured rock mass separation layer anchoring control simulation test device and method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant