CN110455646A - A kind of visualization interface direct shear apparatus being contemplated that temperature, seepage effect - Google Patents

A kind of visualization interface direct shear apparatus being contemplated that temperature, seepage effect Download PDF

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Publication number
CN110455646A
CN110455646A CN201910832248.7A CN201910832248A CN110455646A CN 110455646 A CN110455646 A CN 110455646A CN 201910832248 A CN201910832248 A CN 201910832248A CN 110455646 A CN110455646 A CN 110455646A
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temperature
interface
direct shear
normal
stop collar
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CN110455646B (en
Inventor
国振
王立忠
李雨杰
洪义
李玲玲
周文杰
芮圣洁
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Zhejiang University ZJU
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Zhejiang University ZJU
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    • 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
    • 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
    • G01N3/06Special adaptations of indicating or recording means
    • G01N3/068Special adaptations of indicating or recording means with optical indicating or recording means
    • 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
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0025Shearing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/005Electromagnetic means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/022Environment of the test
    • G01N2203/0222Temperature
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/022Environment of the test
    • G01N2203/0236Other environments
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/0641Indicating or recording means; Sensing means using optical, X-ray, ultra-violet, infrared or similar detectors
    • G01N2203/0647Image analysis

Abstract

The invention discloses a kind of visualization interface direct shear apparatus for being contemplated that temperature, seepage effect, including direct shear apparatus ontology, detachable seepage flow module, temperature action module and visualization high definition particle capture modules.Direct shear apparatus ontology of the invention can realize the interface direct shear test under normal stress, constant stiffness, constant volume normal direction boundary using tangential and two sets of servo-systems of normal direction.The Normal interface condition of direct shear apparatus ontology relies primarily on normal direction servo motor to the next displacement of feedback and force signal, realizes isometric, iso-stress, equivalent rigidity method to boundary Control.Direct shear apparatus of the invention is not only able to achieve the normal direction boundary of Chang Yingli, constant stiffness, constant volume, it is also possible to consider the soil bodys to seep erosion-shear action, temperature-shear action, means are captured in conjunction with visualization high definition, the works interface soil body can deeply be probed into, seepage flow front and back, the shear strength characteristics and interface particle migration micromechanism being subjected to after temperature cycles occur.

Description

A kind of visualization interface direct shear apparatus being contemplated that temperature, seepage effect
Technical field
The present invention relates to a kind of temperature control modules, seepage flow module and visualization high definition particle capture modules, more particularly to It is a kind of to be contemplated that temperature-shearing, seepage flow-shear action visualization interface direct shear apparatus.The direct shear apparatus be not only able to achieve Chang Yingli, The normal direction boundary of constant stiffness, constant volume, it is also contemplated that the soil body seeps erosion-shear action, temperature-shear action, high in conjunction with visualization It is clear to capture means, it can deeply probe into the works interface soil body and seepage flow front and back occurs, the shear strength spy being subjected to after temperature cycles Property and interface particle migration micromechanism.
Background technique
In ocean engineering, suction anchor is due to spies such as its is applied widely, the construction time is short, reusable and low costs It puts and is widely applied.It is heavy to pass through the committed step installed be during suction bucket foundation construction.Suction bucket is during the installation process It extracts out inner bucket water to form negative pressure by water pump, suction barrel base is sunk by the pressure difference inside and outside bucket and is passed through to designed elevation.In It draws water in injection, seepage field can be formed about in suction bucket wall, effect of the fine particle in the gap grading soil body in penetration Under the reduction of the boundary strength between the soil body and bucket wall very likely will lead to the increase of soil particle seepage discharge by erosion, Make its practical anti-pulling capacity lower than design value.
Marine environment day and night temperature is larger, and from sea level to compared with deep-sea domain, temperature gradient is larger;In addition, current underground heat Energy pile can bear superstructure load due to it and be widely used as vertical heat-exchange system.Under temperature action, Meeting formation temperature field inside energy pile, expands with heat and contract with cold, forms strain field inside pile body, and then form stress in pile body , strain stress field at this time by factors such as surrounding soil, upper-lower section constraints due to being influenced to show for conventional Pile Soil interface not Same feature.
In practical projects, often it is related to the soil body and structure the interface shearing row before and after being subjected to seepage effect or temperature action For the assessment and test of variation, however seepage flow or temperature pair are able to detect and assessed currently without relevant experimental facilities and technology The influence of interface shearing strength.
Interface direct shear apparatus is a kind of preferable boundary strength test equipment, and because its is easy to operate, data measured is more accurate And it applies more.Just at present apparently, gradually to enlargement, synthesization, automation direction development, test is set direct shear apparatus both domestic and external Standby perfect in shape and function, load and the basic realization automation of data acquisition.But at present about the soil particle migration of interface shearing, shear band Formation, states of matter develop and local deformation mechanism research and equipment it is also less.
Based on the above background, interface is cut in order to preferably study seepage through soil mass-shear action and temperature-shear action The influence of behavior is cut, the present invention proposes a kind of visualization interface direct shear apparatus for being contemplated that temperature, seepage effect.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide it is a kind of it is contemplated that temperature, seepage effect it is visual Change interface direct shear apparatus, including detachable seepage flow module, temperature action module, visualization high definition particle capture module, probes into temperature Or influence of the seepage effect to boundary strength, can simulate in the suction bucket of ocean the outside soil body after seepage flow occurs with steel interface Shearing Behavioral change and sea-bottom oil-gas pipeline around the soil body be washed caused pipeline damage, and can study temperature make With the variation of flowering structure and soil body interface shearing strength.It is straight that temperature action and seepage effect are integrated in an interface by the present invention It cuts on instrument, effectively increases functionality, the convenience of instrument.
The present invention takes following technical scheme:
A kind of visualization interface direct shear apparatus being contemplated that temperature, seepage effect, including direct shear apparatus ontology, detachable seepage flow mould Block, temperature action module and visualization high definition particle capture module;
The direct shear apparatus ontology include pedestal, tangential servo motor, rigid reaction frame, servo-control system and from It is lower and on be sequentially arranged in horizontal slide rail on pedestal, sliding block, detachable modeling interface galvanized steel plain sheet, uncovered water bath, can be vertical Movable cover plate, loading plate, normal direction servo motor;The rigid reaction frame is set on pedestal, the normal direction servo motor It is set on rigid reaction frame, two sides of the rigid reaction frame are additionally provided with vertical rails;Described is vertically movable The junction of cover board and vertical rails is equipped with vertical spacing regulating valve;Rectangular transparent limit is equipped in the uncovered water bath Ring;The rectangular transparent stop collar inner hollow, top are connected with vertically movable cover board bottom, and internal equipped with test The soil body;Force snesor is equipped between the sliding block and tangential servo motor, sliding block can be moved horizontally along horizontal slide rail;Described Servo-control system is for controlling tangential servo motor and normal direction servo motor;Tangential servo motor and normal direction servo motor difference For controlling moving horizontally for sliding block and moving up and down for rectangular transparent stop collar, the interface so as to the simulation test soil body is cut It cuts;
The detachable seepage flow module includes inlet pipeline, outlet pipeline and osmotic pressure flow control system;It is described into Water lines are sequentially connected water tank, the first valve, water pressure sensor, electromagnetic flowmeter, rectangular transparent stop collar, and described goes out Water lines are sequentially connected rectangular transparent stop collar, the second valve, particle collection device, water pump, water tank;Described is rectangular transparent Stop collar is equipped with permeable stone close to water inlet pipe trackside, for rectifying to water inlet and flowing into the test soil body with being allowed to uniform and stable;Institute The rectangular transparent stop collar stated uniformly is provided with circular hole close to outlet pipe trackside, and the vertical seepage direction face of the lateral edge is equipped with two pieces of bands The clamping plate in hole, circular hole is consistent with the aperture in the hole on clamping plate, make two clamping plates symmetrically opened perpendicular to percolation path to two sides with Closure, controllable seepage flow aperture change in the range of needs (when the hole of clamping plate and the hole on rectangular transparent stop collar are completely wrong Seepage flow aperture is 0 when opening, and when the hole on the hole of clamping plate and rectangular transparent stop collar is completely coincident, seepage flow aperture is maximum);It is described Clamping plate on the outside of be equipped with waterproof plate, form airtight cavity therebetween, airtight cavity is connected with outlet pipeline;
The temperature action module includes S type copper pipe, temperature sensor, temperature regulation system, water tank;The S Type copper pipe is embedded on the detachable modeling interface galvanized steel plain sheet, and is connected by water pipe with water tank;The temperature Regulator control system is used to control the temperature of recirculated water in water tank, and the S type copper pipe carries out uncovered water bath by recirculated water Heating, the temperature sensor regulate and control for measuring to the temperature in uncovered water bath, and by temperature feedback to temperature System is adjusted;
The visualization high definition particle capture module includes underwater high-definition camera and image processing system, the water The uncovered water-bath chamber interior wall, the soil body motion conditions for observation interface position are arranged in lower high-definition camera;
The servo-control system, osmotic pressure flow control system, temperature regulation system, image processing system are integrated in one Platform computer is controlled;
The rectangular transparent detachable simulation circle of stop collar distance of the rectangular transparent stop collar and adjustable seepage flow aperture Face galvanized steel plain sheet 2mm is in vertical shear direction and is equipped with a pair of curved member, for detecting the soil body shear wave velocity under various states, The soil body is assessed in the modulus of shearing of shearing (seeping erosion).
In above-mentioned technical proposal, further, the sliding block is connected by nut and detachable modeling interface galvanized steel plain sheet Connect, rectangular transparent stop collar is connect with vertically movable cover board by nut, by vertical spacing regulating valve, vertical rails and Rectangular transparent stop collar and detachable modeling interface galvanized steel plain sheet distance is adjusted in vertically movable cover board.
Further, the bottom bearing plate center is equipped with earth pressure gauge, can compare normal force size with force snesor.
Further, the seepage flow module can apply 1~500kPa to the soil body by osmotic pressure regulator control system and inlet and outlet pipe Seepage pressure and 0~20cm3The flow of/s.
Further, the tangential servo motor and normal direction servo motor can provide the shearing force and method of 0~1MPa To pressure.
Further, the particle collection device includes a set of standard screen, and aperture is from top to bottom sequentially reduced, for true Fixed whole infiltration erosion amount and grain composition variation.
Further, the temperature sensor is linearly evenly arranged on detachable modeling interface galvanized steel plain sheet, can Steel-sand interface temperature uniformity in uncovered water bath is verified, realizes that temperature cycles, temperature range are 0~70 DEG C.
Further, the rectangle permeable stone is embedded in rectangular transparent stop collar, and insert depth is rectangular transparent limit The half of ring-side wall thickness.
Direct shear apparatus ontology of the invention can realize normal stress, constant stiffness, Chang Ti using tangential and two sets of servo-systems of normal direction Area method is to the interface direct shear test under boundary.The Normal interface condition of the interface direct shear apparatus ontology, relies primarily on normal direction and watches Motor is taken to the next displacement of feedback and force signal, realizes isometric, iso-stress, equivalent rigidity method to boundary Control.It is wherein isometric With iso-stress control to keep displacement and axle power registration in shear history to remain unchanged, medium stiffness reliability mainly passes through actual measurement The vertical displacement of soil adjusts normal pressure, the rigidity border condition such as realization by Rigidity Calculation formula.
When carrying out seepage through soil mass-shearing test, Normal interface condition is first adjusted, can be erected by the driving of normal direction servo motor To movable cover plate, so as to adjust the position of rectangular transparent stop collar, it is allowed to be in close contact with uncovered water bath bottom.It passes sequentially through The good water tank of piping connection, the first valve, water pressure sensor, electromagnetic flowmeter, rectangular transparent stop collar, the second valve, Grain collection device, water pump, osmotic pressure flow control system form closed circuit, and carry out leak check, guarantee that watertightness is good. Flow and seepage pressure are adjusted to definite value, the aperture of rectangular transparent stop collar is adjusted according to sample partial size, opens the first valve And second valve carry out seepage through soil mass.After seepage flow, inlet pipeline and outlet pipeline are successively removed, again by can Vertically movable cover board adjusts the position of rectangular transparent stop collar, is allowed to be provided with crack with uncovered water bath bottom, avoids stop collar With the frictional influence test accuracy of uncovered water bath bottom.Carry out interface shearing later, the research soil body is before and after seeping erosion and structure The variation of object boundary strength.Shear wave velocity measurement can be also carried out before and after the test (by tangential servo motor and normal direction servo electricity The interface shearing of the machine difference simulation test soil body), the influence for seeping erosion effect to soil body shearing rigidity can be studied.
When carrying out soil temperature-shearing test, Normal interface condition is first adjusted, by S type copper pipe, temperature sensor, temperature Degree regulator control system, water tank connect, and close the two clamping plates of rectangular transparent stop collar side, are filled into uncovered water bath It floods at the top of sand sample, temperature is controlled by computer, interface shearing is carried out after temperature action and (passes through tangential servo motor and normal direction The interface shearing of the servo motor difference simulation test soil body), it can both probe into soil and works interface shearing under thermostatic effect Behavior, but can probe into be subjected to temperature cycles after soil and the variation of works interface shearing behavior.Equally available flexure element is cut Wave velocity testing is cut, the variation of soil body shearing rigidity before and after comparison temperature-shear action.
In addition, also tracking interface particle migration, formation of shear bands, states of matter using visualization high definition particle capture module Evolution and local deformation feature, explain experimental phenomena from micromechanism.Various sensors in the present invention are all made of high-precision Spend sensor.
The invention has the following advantages that
The visualization interface direct shear apparatus for being contemplated that temperature, seepage effect of the invention, considers the soil body using seepage flow module In addition seepage effect, the influence using temperature action module simulation temperature to interface shearing are also caught using visualization high definition particle The motion conditions and states of matter for catching soil particle at module acquisition interface develop.More Normal Constraint modules consider soil body actual stress State is, it can be achieved that seepage through soil mass-shearing or the monitoring of temperature-shear action real-time status amount.The present invention is by temperature action And seepage effect is integrated on an interface direct shear apparatus, effectively increases functionality, the convenience of instrument.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis The attached drawing of offer obtains other attached drawings.
Fig. 1 is single unit system front view;
Fig. 2 is single unit system side view;
Fig. 3 is Section A-A top view;
Fig. 4 is section B-B top view;
Fig. 5 is seepage flow module sectional view;
The embedded figure of Fig. 6 S type copper pipe;
Fig. 7 Normal Constraint module upright controling schematic diagram;
Each module of Fig. 8 integrates schematic diagram;
Fig. 9 is rectangular transparent stop collar Local map;
Wherein, 1 direct shear apparatus ontology, 2 detachable seepage flow modules, 3 temperature action modules, 4 visualization high definition particle capture moulds Block, 5 pedestals, 6 tangential servo motors, 7 rigid reaction frames, 8 servo-control systems, 9 horizontal slide rails, 10 sliding blocks, 11 removable forms Quasi- interface galvanized steel plain sheet, 12 uncovered water baths, 13 vertically movable cover boards, 14 loading plates, 15 normal direction servo motors, 16 are vertically slided Rail, 17 vertical spacing regulating valves, 18 rectangular transparent stop collars, 19 force snesors, 20 inlet pipelines, 21 outlet pipelines, 22 osmotic pressures Flow control system, 23 water tanks, 24 first valves, 25 water pressure sensors, 26 electromagnetic flowmeters, 27 second valves, 28 Grain collection device, 29 water pumps, 30 clamping plates, 31S type copper pipe, 32 temperature sensors, 33 temperature regulation systems, 34 underwater high-definition cameras It is head, 35 image processing systems, 36 computers, 37 flexure elements, 38 nuts, 39 nuts, 40 earth pressure gauges, 41 standard screens, 42 closed Cavity, 43 permeable stones.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall in the protection scope of this application.
It is as shown in Figure 1 a kind of visualization interface direct shear apparatus for being contemplated that temperature, seepage effect of the invention, including staight scissors Instrument ontology 1, detachable seepage flow module 2, temperature action module 3 and visualization high definition particle capture module 4;The direct shear apparatus sheet Body 1 includes pedestal 5, tangential servo motor 6, rigid reaction frame 7, servo-control system 8 and is sequentially arranged in pedestal from bottom to top Horizontal slide rail 9, sliding block 10, detachable modeling interface galvanized steel plain sheet 11, uncovered water bath 12, vertically movable cover board 13 on 5, Loading plate 14, normal direction servo motor 15;The rigid reaction frame 7 is set on pedestal 5, and the normal direction servo motor 15 is set It is placed on rigid reaction frame 7, two sides of the rigid reaction frame 7 are additionally provided with vertical rails 16;Described can vertically move Dynamic cover board 13 and the junction of vertical rails 16 are equipped with vertical spacing regulating valve 17;It is equipped in the uncovered water bath 12 rectangular Transparent stop collar 18, shearing the former two's planar central position are identical.Rectangular transparent 18 inner hollow of stop collar, and it is internal Equipped with the test soil body, top is connected with vertically movable 13 bottom of cover board, passes through vertical spacing regulating valve 17, vertical rails 16 And vertically movable cover board 13 adjusts rectangular transparent stop collar 18 and detachable 11 distance of modeling interface galvanized steel plain sheet;Described High-precision force sensor 19 is equipped between sliding block 10 and tangential servo motor 6, sliding block 10 can be moved horizontally along horizontal slide rail 9;Institute The servo-control system 8 stated is for controlling tangential servo motor 6 and normal direction servo motor 15;Tangential servo motor 6 and normal direction are watched It takes motor 15 and is respectively used to moving horizontally for sliding block 10 of control and moving up and down for rectangular transparent stop collar 18, so that analog is tried Test the interface shearing of the soil body;
The detachable seepage flow module 2 includes inlet pipeline 20, outlet pipeline 21 and osmotic pressure flow control system 22;Institute The inlet pipeline 20 stated be sequentially connected water tank 23, osmotic pressure flow control system 22, the first valve 24, water pressure sensor 25, Electromagnetic flowmeter 26, rectangular transparent stop collar 18, the outlet pipeline 21 are sequentially connected rectangular transparent stop collar 18, the second valve Door 27, particle collection device 28, water pump 29, water tank 23;The rectangular transparent stop collar 18 is close to 20 side bottom of inlet pipeline Portion center is provided with a circular hole, which is connected with inlet pipeline 20, and the side is equipped with an insertion at the test soil body The permeable stone 43 of the transparent stop collar 18 of the side shape is used to rectify water inlet, flows into the test soil body with being allowed to uniform and stable, permeable 43 insert depth of stone is the half of rectangular transparent 18 wall thickness of stop collar;The rectangular transparent stop collar 18 is close to outlet pipeline 21 Side is uniformly provided with the circular hole that aperture is 2mm, and the vertical seepage direction face of the lateral edge is equipped with two pieces of clamping plates 30 with holes, on clamping plate 30 Circularhole diameter be 2mm, two clamping plates can perpendicular to percolation path outward symmetrically open and closure, to control seepage flow aperture Change between 0~2mm;Waterproof plate, airtight cavity 42 between the two, airtight cavity 42 are equipped on the outside of the clamping plate 30 Bottom connects outlet pipeline 21.
The temperature action module 3 includes S type copper pipe 31, temperature sensor 32, temperature regulation system 33, water tank 23;The S type copper pipe 31 is embedded on the detachable modeling interface galvanized steel plain sheet 11, and passes through water pipe and water tank 23 It is connected;The temperature regulation system 33 is used to control the temperature of recirculated water in water tank 23, and the S type copper pipe 31 is by following Ring water heats uncovered water bath 12, and the temperature sensor 32 is for surveying the temperature in uncovered water bath 12 Amount, and temperature feedback to temperature regulation system 33 is adjusted;
The visualization high definition particle capture module 4 includes underwater high-definition camera 34 and image processing system 35, institute 12 inner wall of uncovered water bath is arranged in the underwater high-definition camera 34 stated, and the soil body for observation interface position moves feelings Condition;The image that the image processing system 35 is used to shoot underwater high-definition camera 34 is handled;
The servo-control system 8, osmotic pressure flow control system 22, temperature regulation system 33, image processing system 35 A computer 36 is integrated in be controlled;
The rectangular transparent stop collar 18 is in vertical shear side apart from detachable 11 2mm of modeling interface galvanized steel plain sheet To a pair of curved member 37 is equipped with, for detecting the soil body shear wave velocity under various states.
The sliding block 10 is connect by nut 38 with detachable modeling interface galvanized steel plain sheet 11, the rectangular transparent limit Position ring 18 is connect with vertically movable cover board 13 by nut 39, and the uncovered water bath 12 is welded on detachable modeling interface On galvanized steel plain sheet 11.14 bottom centre of loading plate is equipped with earth pressure gauge 40, for comparing normal force with force snesor 19 Size.The seepage pressure that the osmotic pressure flow control system 22 applies the soil body is 1~500kPa, flow is 0~20cm3/ s.The shearing force and normal pressure that the tangential servo motor 6 and normal direction servo motor 15 provide are 0~1MPa. Grain collection device 28 include a set of standard screen 41, aperture be from top to bottom followed successively by 2mm, 1mm, 0.5mm, 0.25mm, 0.1mm, 0.075mm, for determining whole infiltration erosion amount and grain composition variation.The temperature sensor 32 is linearly evenly arranged in On detachable modeling interface galvanized steel plain sheet 11, for verifying steel in uncovered water bath 12-sand interface temperature uniformity, and will Real time temperature feeds back to temperature regulation system 33 and is adjusted, and temperature range is 0~70 DEG C.
When carrying out seepage through soil mass-shearing test, Normal interface condition is first adjusted, it can by the driving of normal direction servo motor 15 Vertically movable cover board 13 moves up and down, and so as to adjust the position of rectangular transparent stop collar 18, is allowed to and 12 bottom of uncovered water bath It is in close contact.Pass sequentially through the good water tank 23 of piping connection, the first valve 24, water pressure sensor 25, electromagnetic flowmeter 26, side The transparent stop collar 18 of shape, the second valve 27, particle collection device 28, water pump 29, the formation of osmotic pressure flow control system 22 are closed back Road, and leak check is carried out, guarantee that watertightness is good.Flow and seepage pressure are adjusted to definite value, adjusted according to sample partial size The aperture (movement of control clamping plate to control seepage flow aperture) of the aperture of good rectangular transparent stop collar 18 and clamping plate 30 opens the One valve 24, the second valve 27 carry out seepage flow.After seepage flow, inlet pipeline 20 and outlet pipeline 21 are successively removed, then The secondary position that rectangular transparent stop collar 18 is adjusted by vertically movable cover board 13 is allowed to be provided with 12 bottom of uncovered water bath small Seam, avoids the frictional influence test accuracy of stop collar 18 Yu 12 bottom of uncovered water bath.Interface shearing is carried out again later (by cutting To servo motor and normal direction servo motor difference the simulation test soil body interface shearing), research the soil body seep erosion before and after and structure The variation of object boundary strength.Shear wave velocity measurement can be also carried out before and after the test, can be studied and be seeped erosion effect to soil body shearing rigidity Influence.
When carrying out soil temperature-shearing test, Normal interface condition is first adjusted, by S type copper pipe 31, temperature sensor 32, temperature regulation system 33, water tank 23 connect, and the two clamping plates of rectangular transparent stop collar side are closed, to uncovered water-bath It is filled to and is flooded at the top of sand sample in case 12, temperature is controlled by computer, interface shearing is carried out after temperature action (by tangentially watching Take the interface shearing of motor and the normal direction servo motor difference simulation test soil body), it can both probe into soil and knot under thermostatic effect Structure object interface shearing behavior, but can probe into be subjected to temperature cycles after soil and the variation of works interface shearing behavior.It is same available Flexure element 37 carries out shear wave velocity measurement, the variation of soil body shearing rigidity before and after comparison temperature-shear action.
Technical solution provided by the present invention is described in detail above.Specific case used herein is to this hair Bright principle and embodiment is expounded, method of the invention that the above embodiments are only used to help understand and its Core concept.It should be pointed out that for those skilled in the art, in the premise for not departing from the principle of the invention Under, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection of the claims in the present invention In range.

Claims (8)

1. a kind of visualization interface direct shear apparatus for being contemplated that temperature, seepage effect, including direct shear apparatus ontology (1), which is characterized in that It further include detachable seepage flow module (2), temperature action module (3) and visualization high definition particle capture module (4);
The direct shear apparatus ontology (1) includes pedestal (5), tangential servo motor (6), rigid reaction frame (7), servo-control system (8) and from bottom to top horizontal slide rail (9), sliding block (10), the detachable modeling interface galvanized steel being sequentially arranged on pedestal (5) Plate (11), uncovered water bath (12), vertically movable cover board (13), loading plate (14), normal direction servo motor (15);Described is rigid Property reaction frame (7) is set on pedestal (5), and the normal direction servo motor (15) is set on rigid reaction frame (7), described Two sides of rigid reaction frame (7) are additionally provided with vertical rails (16);The vertically movable cover board (13) and vertical rails (16) junction is equipped with vertical spacing regulating valve (17);Rectangular transparent stop collar is equipped in the uncovered water bath (12) (18);Rectangular transparent stop collar (18) inner hollow and equipped with the test soil body, top and vertically movable cover board (13) bottom is connected;Force snesor (19) are equipped between the sliding block (10) and tangential servo motor (6);The servo control System (8) processed is for controlling tangential servo motor (6) and normal direction servo motor (15);
The detachable seepage flow module (2) includes inlet pipeline (20), outlet pipeline (21) and osmotic pressure flow control system (22);The inlet pipeline (20) be sequentially connected water tank (23), osmotic pressure flow control system (22), the first valve (24), Water pressure sensor (25), electromagnetic flowmeter (26), rectangular transparent stop collar (18), the outlet pipeline (21) are sequentially connected Rectangular transparent stop collar (18), the second valve (27), particle collection device (28), water pump (29), water tank (23);The side The transparent stop collar of shape (18) is equipped with permeable stone (43) close to inlet pipeline (20) side, for rectifying to water inlet and being allowed to uniform and stable Ground flows into the test soil body;The rectangular transparent stop collar (18) is uniformly provided with circular hole close to outlet pipeline (21) side, outside Equipped with clamping plate (30) with holes, circular hole is consistent with the aperture in hole on clamping plate (30), adjustable by the movement for controlling clamping plate (30) Save seepage flow aperture;It is equipped with waterproof plate on the outside of the clamping plate (30), forms airtight cavity (42) therebetween, airtight cavity (42) it is connected with outlet pipeline (21);
The temperature action module (3) includes S type copper pipe (31), temperature sensor (32), temperature regulation system (33), water storage Case (23);The S type copper pipe (31) is embedded on the detachable modeling interface galvanized steel plain sheet (11), and by water pipe with Water tank (23) is connected;The temperature regulation system (33) is used to control the temperature of recirculated water in water tank (23), the S Type copper pipe (31) heats uncovered water bath (12) by recirculated water, and the temperature sensor (32) is used for uncovered water Temperature in bath cabinet (12) measures, and temperature feedback to temperature regulation system (33) is adjusted;
The visualization high definition particle capture module (4) includes underwater high-definition camera (34) and image processing system (35), Described uncovered water bath (12) inner wall, the soil body for observation interface position is arranged in the underwater high-definition camera (34) Motion conditions;The image that the image processing system (35) is used to shoot underwater high-definition camera (34) is handled;
The servo-control system (8), osmotic pressure flow control system (22), temperature regulation system (33), image processing system (35) computer (36) is integrated in be controlled;
The rectangular transparent stop collar (18) is in vertical shear direction apart from detachable modeling interface galvanized steel plain sheet (11) 2mm It is first (37) equipped with a pair of curved, for detecting the soil body shear wave velocity under various states.
2. a kind of visualization interface direct shear apparatus for being contemplated that temperature, seepage effect according to claim 1, feature exist In the sliding block (10) is connect by nut (38) with detachable modeling interface galvanized steel plain sheet (11), and described is rectangular transparent Stop collar (18) is connect with vertically movable cover board (13) by nut (39), and the uncovered water bath (12) is welded on removable It unloads on modeling interface galvanized steel plain sheet (11).
3. a kind of visualization interface direct shear apparatus for being contemplated that temperature, seepage effect according to claim 1, feature exist In the loading plate (14) bottom centre is equipped with earth pressure gauge (40), for comparing normal force size with force snesor (19).
4. a kind of visualization interface direct shear apparatus for being contemplated that temperature, seepage effect according to claim 1, feature exist In the seepage pressure that the osmotic pressure flow control system (22) applies the soil body is 1~500kPa, flow is 0~20cm3/ s。
5. a kind of visualization interface direct shear apparatus for being contemplated that temperature, seepage effect according to claim 1, feature exist In the shearing force and normal pressure that the tangential servo motor (6) and normal direction servo motor (15) provide are 0~1MPa.
6. a kind of visualization interface direct shear apparatus for being contemplated that temperature, seepage effect according to claim 1, feature exist In the particle collection device (28) includes a set of standard screen (41), and aperture is from top to bottom followed successively by reduction, whole for determining Body seeps erosion amount and grain composition variation.
7. a kind of visualization interface direct shear apparatus for being contemplated that temperature, seepage effect according to claim 1, feature exist In the temperature sensor (32) is linearly evenly arranged on detachable modeling interface galvanized steel plain sheet (11), for verifying The interior steel of uncovered water bath (12)-sand interface temperature uniformity, temperature controlling range are 0~70 DEG C.
8. a kind of visualization interface direct shear apparatus for being contemplated that temperature, seepage effect according to claim 1, feature exist In the permeable stone (43) is embedded in rectangular transparent stop collar (18), and insert depth is rectangular transparent stop collar (18) wall thickness Half.
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