CN113405913B - Device for soil body fracture toughness and tensile strength and application method thereof - Google Patents
Device for soil body fracture toughness and tensile strength and application method thereof Download PDFInfo
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- CN113405913B CN113405913B CN202110641975.2A CN202110641975A CN113405913B CN 113405913 B CN113405913 B CN 113405913B CN 202110641975 A CN202110641975 A CN 202110641975A CN 113405913 B CN113405913 B CN 113405913B
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- 239000002689 soil Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 169
- 238000001125 extrusion Methods 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 11
- 230000003044 adaptive effect Effects 0.000 claims description 9
- 230000007306 turnover Effects 0.000 claims description 9
- 102100037651 AP-2 complex subunit sigma Human genes 0.000 claims description 3
- 101000806914 Homo sapiens AP-2 complex subunit sigma Proteins 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000009795 derivation Methods 0.000 description 7
- 230000006978 adaptation Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
- G01N2203/0212—Theories, calculations
- G01N2203/0218—Calculations based on experimental data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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Abstract
The invention discloses a device for soil fracture toughness and tensile strength and a use method thereof, and relates to the technical field of novel soil detection. The invention comprises a detection accommodating hose, a coordination detection output structure, a first positioning auxiliary detection plate and an equivalent stress detection structure, wherein the bottom end of the detection accommodating hose is fixedly connected with the first positioning auxiliary detection plate, the two sides of the first positioning auxiliary detection plate are fixedly connected with the coordination detection output structure, the top end of the detection accommodating hose is fixedly connected with the equivalent stress detection structure, the coordination detection output structure comprises a support carrying plate, a transverse guide block, a first motor, a screw rod, a polished rod and a coordination pushing block, the top end of the support carrying plate is welded with the transverse guide block, and one end of the transverse guide block is fixedly connected with the first motor through a screw. According to the invention, through the integral design of the device, the device is convenient to detect the stress intensity and fracture toughness of the soil body stretching with the specification, which is automatic, accurate and adjustable.
Description
Technical Field
The invention relates to the technical field of novel soil body detection, in particular to a device for soil body fracture toughness and tensile strength and a use method thereof.
Background
Along with the rapid development of society, more and more special clay is applied to different fields, and in order to ensure the service performance of the special clay, the fracture strength and the tensile strength of the special clay need to be continuously judged, but the high-efficiency and stable automatic fracture toughness and tensile strength measurement of the soil body is inconvenient under the prior art.
Disclosure of Invention
The invention aims to provide a device for soil body fracture toughness and tensile strength and a use method thereof, which solve the existing problems: the prior art is inconvenient to carry out high-efficiency and stable automatic fracture toughness and tensile strength measurement on soil.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a device of soil body fracture toughness and tensile strength, includes that it holds hose, moves detection output structure, first location auxiliary detection board and equivalent stress detection structure to detect, the bottom fixedly connected with of holding the hose is first to be fixed position auxiliary detection board, the both sides fixedly connected with of first location auxiliary detection board moves detection output structure, the top fixedly connected with of holding the hose is fixed stress detection structure.
Preferably, the cooperation detects output structure and includes support carrier plate, horizontal guide block, first motor, screw rod, polished rod and cooperation ejector pad, the top welding of support carrier plate has horizontal guide block, screw fixedly connected with first motor is passed through to the one end of horizontal guide block, the output fixedly connected with screw rod of first motor, the other end of screw rod is rotated with the inboard of horizontal guide block and is connected, the inboard of horizontal guide block has still welded two polished rods, the polished rod is located the both sides of screw rod, the outside sliding connection of polished rod has cooperation ejector pad, the inboard of cooperation ejector pad still passes through threaded connection with the screw rod.
Preferably, the cooperation detects output structure still includes rodless cylinder, cooperation carrying plate, second motor, upset and stir piece, first hydraulic piston cylinder and extrusion atress ejector pad, the top fixedly connected with rodless cylinder of cooperation ejector pad, the one end sliding connection of rodless cylinder has a plurality of cooperation carrying plate, one side of cooperation carrying plate passes through screw fixedly connected with second motor, the output fixedly connected with upset of second motor is stirred the piece, the opposite side of upset stirring the piece is rotated with cooperation carrying plate and is connected, the one end of upset stirring the piece is passed through screw fixedly connected with first hydraulic piston cylinder, the output fixedly connected with extrusion atress ejector pad of first hydraulic piston cylinder.
The first motor is controlled to complete torque output to the screw rod, the screw rod is enabled to rotate, the screw rod is connected with the matched pushing block through threads, torque is obtained at the matched pushing block, the matched pushing block is connected with the polished rod in a sliding mode, the torque at the matched pushing block is limited to form sliding displacement, the matched pushing block is driven to adjust the transverse distance between the extruded stressed pushing block and the detection containing hose through the sliding displacement of the matched pushing block, driving of all matched carrying plates is completed through the rodless cylinder, the heights of the extruded stressed pushing blocks relative to the detection containing hose are adjusted, the second motor is utilized to drive the overturning stirring block to rotate, adjustment of the extruded stressed pushing block stress deriving angle is completed, and after adjustment is completed, the first hydraulic piston cylinder is controlled to complete derivation of the extruded stressed pushing block, so that the extruded stressed pushing block applies a plurality of main stresses to the detection containing hose.
Preferably, the equivalent stress detection structure comprises a detection stroke carrying pipe, a positioning and containing carrying structure, an auxiliary carrying plate, a second hydraulic piston cylinder, a coordination detection structure, a second positioning auxiliary detection plate and a magnetic attraction interface, wherein the bottom end fixedly connected with of the detection stroke carrying pipe is positioned and contains the carrying structure, one side fixedly connected with of the detection stroke carrying pipe is auxiliary carrying plate, the top end of the auxiliary carrying plate is fixedly connected with the second hydraulic piston cylinder through a screw, the output end of the second hydraulic piston cylinder is magnetically attracted and connected with the magnetic attraction interface, the bottom end fixedly connected with the second positioning auxiliary detection plate of the magnetic attraction interface, the top end fixedly connected with of the detection stroke carrying pipe is coordination detection structure, and the bottom end of the coordination detection structure is fixedly connected with the second positioning auxiliary detection plate.
Preferably, the location holds and carries on the structure and includes wide distance carrying plate, auxiliary positioning board, first spring and adaptation clamp block, the bottom welding of wide distance carrying plate both sides has auxiliary positioning board, one side welding of auxiliary positioning board has first spring, the one end welding of first spring has adaptation clamp block, the inboard of adaptation clamp block holds the hose laminating with the detection.
Because detect and hold the hose and receive stress extrusion for soil body formation local shrink extrudes to the top, detects the diameter grow that holds the hose top, derives adaptation clamping block, utilizes the cooperation of adaptation clamping block and first spring, makes first spring atress shrink, drives adaptation clamping block and holds the hose and expand to both sides along with detecting, has avoided detecting and has held equivalent stress detection structure break away from when the hose diameter grow.
Preferably, the cooperation detects the structure and includes test inner rotating pipe, pressure detector, second spring and atress deduction slide bar, the top fixedly connected with pressure detector of test inner rotating pipe, the bottom fixedly connected with second spring of pressure detector, the bottom welding of second spring has the atress deduction slide bar, the inboard sliding connection of atress deduction slide bar and test inner rotating pipe, the bottom and the second location auxiliary detection board welded connection of atress deduction slide bar.
Preferably, the structure of the second positioning auxiliary detection plate is identical with that of the first positioning auxiliary detection plate, the first positioning auxiliary detection plate and the second positioning auxiliary detection plate comprise detection plate main bodies, third hydraulic piston cylinders and positioning locking bolts, the bottom ends of two sides of the detection plate main bodies are fixedly connected with the third hydraulic piston cylinders through screws, and the output ends of the third hydraulic piston cylinders are fixedly connected with the positioning locking bolts.
Preferably, the material of the detection accommodating hose is transparent rubber.
The application method of the device for the soil body fracture toughness and the tensile strength is used for any one of the above steps as follows:
the first step: inserting the quantitative and shaped soil body into the detection accommodating hose, and clamping the equivalent stress detection structure at the top end of the detection accommodating hose through the positioning accommodating carrying structure;
and a second step of: the extrusion force-bearing pushing blocks are positioned at proper tested distances, heights and angles by controlling the derivation, and at the moment, the first hydraulic piston cylinder is controlled to finish the derivation of the extrusion force-bearing pushing blocks, so that the extrusion force-bearing pushing blocks extrude the detection containing hose to finish the angle force on the soil body in the detection containing hose, and sigma 1, sigma 2 and sigma 3 are formed;
and a third step of: the second positioning auxiliary detection plate is forced to push the extrusion stress deriving sliding rod due to the fact that the soil body is forced to extrude to form surging derivation towards the top end, and the second spring is pushed to extrude by the stress deriving sliding rod to finally form specific stress data at the pressure detector, so that sigma H is formed;
fourth step: calculating specific fracture toughness according to a formula;
fifth step: separating the equivalent stress detection structure from the detection accommodating hose, pouring out the original soil body in the detection accommodating hose, and inserting the detected soil body with the same weight type as the first detection into the detection accommodating hose;
sixth step: the second positioning auxiliary detection plate and a third hydraulic piston cylinder in the first positioning auxiliary detection plate are controlled to finish deducing the positioning locking bolt, so that the positioning locking bolt is inserted into the soil body to position the top end and the bottom end of the soil body;
seventh step: the second hydraulic piston cylinder is controlled to finish the downward pressing of the output end, the magnetic attraction interface is started and connected with the output end of the second hydraulic piston cylinder through magnetic attraction, and the second hydraulic piston cylinder is utilized to drive the output end to reset to finish the pulling of soil in the detection accommodating hose;
eighth step: and continuously observing the change of the pressure value at the pressure detector before the soil body is not completely disconnected from the outside of the detection accommodating hose, so as to obtain the equivalent stress value of the tensile stress intensity of the soil body.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through the integral design of the device, the device is convenient to detect the stress intensity and fracture toughness of the soil body stretching with the specification, which is automatic, accurate and adjustable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a partial structure of the actuation detection output structure of the present invention;
FIG. 3 is a schematic diagram of a partial structure of an equivalent stress detecting structure according to the present invention;
FIG. 4 is a schematic view of a partial structure of the positioning and accommodating carrying structure of the present invention;
FIG. 5 is a schematic view of a partial structure of the actuation detection structure of the present invention;
FIG. 6 is a schematic view of a partial structure of a first positioning auxiliary detecting plate and a second positioning auxiliary detecting plate according to the present invention;
FIG. 7 is a schematic diagram of the force detection of the whole device of the present invention;
FIG. 8 is a graph illustrating fracture toughness according to the present invention.
In the figure: 1. detecting the accommodating hose; 2. a coordination detection output structure; 3. a first positioning auxiliary detection plate; 4. an equivalent stress detection structure; 5. supporting the carrying plate; 6. a lateral guide block; 7. a first motor; 8. a screw; 9. a polish rod; 10. the pushing block is matched; 11. a rodless cylinder; 12. a mounting plate is moved; 13. a second motor; 14. turning over the toggle block; 15. a first hydraulic piston cylinder; 16. extruding the stressed pushing block; 17. detecting a stroke carrying tube; 18. positioning and accommodating the carrying structure; 19. an auxiliary carrying plate; 20. a second hydraulic piston cylinder; 21. a coordination detection structure; 22. a second positioning auxiliary detection plate; 23. a magnetic interface; 24. a wide-distance carrying plate; 25. an auxiliary positioning plate; 26. a first spring; 27. adapting to the clamping block; 28. testing the inner rotating pipe; 29. a pressure detector; 30. a second spring; 31. deriving the sliding rod by stress; 32. a detection plate main body; 33. a third hydraulic piston cylinder; 34. and positioning and locking the bolt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Embodiment one:
please refer to fig. 1:
the utility model provides a soil body fracture toughness and tensile strength's device, is including detecting to hold hose 1, joining in marriage and is examined output structure 2, first location auxiliary detection board 3 and equivalent stress and detect structure 4, detects the bottom fixedly connected with first location auxiliary detection board 3 that holds hose 1, and the both sides fixedly connected with of first location auxiliary detection board 3 join in marriage and move and detect output structure 2, detects the top fixedly connected with equivalent stress that holds hose 1 and detect structure 4.
Please refer to fig. 2:
the cooperation detection output structure 2 comprises a support carrying plate 5, a transverse guide block 6, a first motor 7, a screw rod 8, a polished rod 9 and a cooperation pushing block 10, wherein the transverse guide block 6 is welded at the top end of the support carrying plate 5, one end of the transverse guide block 6 is fixedly connected with the first motor 7 through a screw, the output end of the first motor 7 is fixedly connected with the screw rod 8, the other end of the screw rod 8 is rotationally connected with the inner side of the transverse guide block 6, two polished rods 9 are welded at the inner side of the transverse guide block 6, the polished rods 9 are positioned at two sides of the screw rod 8, the cooperation pushing block 10 is slidingly connected at the outer side of the polished rod 9, and the inner side of the cooperation pushing block 10 is also in threaded connection with the screw rod 8;
the matched detection output structure 2 further comprises a rodless cylinder 11, a matched carrying plate 12, a second motor 13, a turnover stirring block 14, a first hydraulic piston cylinder 15 and an extrusion stress pushing block 16, wherein the rodless cylinder 11 is fixedly connected to the top end of the matched pushing block 10, one end of the rodless cylinder 11 is slidably connected with a plurality of matched carrying plates 12, one side of the matched carrying plate 12 is fixedly connected with the second motor 13 through screws, the output end of the second motor 13 is fixedly connected with the turnover stirring block 14, the other side of the turnover stirring block 14 is rotationally connected with the matched carrying plate 12, one end of the turnover stirring block 14 is fixedly connected with the first hydraulic piston cylinder 15 through screws, and the output end of the first hydraulic piston cylinder 15 is fixedly connected with the extrusion stress pushing block 16;
the torque output of the screw rod 8 is completed through controlling the first motor 7, the screw rod 8 rotates, the screw rod 8 is connected with the matched pushing block 10 through threads, the matched pushing block 10 obtains torque, the matched pushing block 10 is connected with the polished rod 9 in a sliding manner, the torque at the matched pushing block 10 is limited to form sliding displacement, the sliding displacement of the matched pushing block 10 is utilized to drive the extrusion force pushing block 16 to approach to the transverse distance of the detection accommodating hose 1, at the moment, the driving of all matched carrying plates 12 is completed through the rodless cylinder 11, the heights of the extrusion force pushing blocks 16 relative to the detection accommodating hose 1 are adjusted, the rotation of the turnover stirring block 14 is utilized to drive the second motor 13, the adjustment of the forced guiding angle of the extrusion force pushing block 16 is completed, after the adjustment is completed, the first hydraulic piston cylinder 15 is controlled to complete the derivation of the extrusion force pushing block 16, and the extrusion force pushing block 16 is enabled to apply a plurality of main stresses to the detection accommodating hose 1;
please refer to fig. 3:
the equivalent stress detection structure 4 comprises a detection stroke carrying pipe 17, a positioning accommodating carrying structure 18, an auxiliary carrying plate 19, a second hydraulic piston cylinder 20, a coordination detection structure 21, a second positioning auxiliary detection plate 22 and a magnetic attraction interface 23, wherein the bottom end of the detection stroke carrying pipe 17 is fixedly connected with the positioning accommodating carrying structure 18, one side of the detection stroke carrying pipe 17 is fixedly connected with the auxiliary carrying plate 19, the top end of the auxiliary carrying plate 19 is fixedly connected with the second hydraulic piston cylinder 20 through a screw, the output end of the second hydraulic piston cylinder 20 is magnetically attracted and connected with the magnetic attraction interface 23, the bottom end of the magnetic attraction interface 23 is fixedly connected with the second positioning auxiliary detection plate 22, the top end of the detection stroke carrying pipe 17 is fixedly connected with the coordination detection structure 21, and the bottom end of the coordination detection structure 21 is fixedly connected with the second positioning auxiliary detection plate 22;
please refer to fig. 4:
the positioning and accommodating carrying structure 18 comprises a wide-distance carrying plate 24, an auxiliary positioning plate 25, a first spring 26 and an adaptive clamping block 27, wherein the auxiliary positioning plate 25 is welded at the bottom ends of two sides of the wide-distance carrying plate 24, the first spring 26 is welded at one side of the auxiliary positioning plate 25, the adaptive clamping block 27 is welded at one end of the first spring 26, and the inner side of the adaptive clamping block 27 is attached to the detection accommodating hose 1;
because the detection accommodating hose 1 is extruded by stress, soil forms local shrinkage and extrudes to the top, the diameter of the top of the detection accommodating hose 1 is enlarged, the adaptive clamping block 27 is deduced, the adaptive clamping block 27 is matched with the first spring 26, so that the first spring 26 is shrunk by stress, the adaptive clamping block 27 is driven to expand to two sides along with the detection accommodating hose 1, and the separation of the equivalent stress detection structure 4 when the diameter of the detection accommodating hose 1 is enlarged is avoided;
please refer to fig. 5-6:
the coordination detection structure 21 comprises a test inner rotating pipe 28, a pressure detector 29, a second spring 30 and a stress deduction slide bar 31, wherein the pressure detector 29 is fixedly connected to the top end of the test inner rotating pipe 28, the second spring 30 is fixedly connected to the bottom end of the pressure detector 29, the stress deduction slide bar 31 is welded to the bottom end of the second spring 30, the stress deduction slide bar 31 is in sliding connection with the inner side of the test inner rotating pipe 28, and the bottom end of the stress deduction slide bar 31 is welded to the second positioning auxiliary detection plate 22;
the second positioning auxiliary detection plate 22 and the first positioning auxiliary detection plate 3 have the same structure, the first positioning auxiliary detection plate 3 and the second positioning auxiliary detection plate 22 comprise a detection plate main body 32, a third hydraulic piston cylinder 33 and positioning locking bolts 34, the bottom ends of two sides of the detection plate main body 32 are fixedly connected with the third hydraulic piston cylinder 33 through screws, and the output end of the third hydraulic piston cylinder 33 is fixedly connected with the positioning locking bolts 34;
the material of the detection accommodating hose 1 is transparent rubber.
Embodiment two:
the application method of the device for soil body fracture toughness and tensile strength is used for the above embodiment, and comprises the following steps:
the first step: inserting a quantitative and shaped soil body into the detection accommodating hose 1, and clamping the equivalent stress detection structure 4 at the top end of the detection accommodating hose 1 through the positioning accommodating carrying structure 18;
and a second step of: the extrusion force pushing blocks 16 are positioned at proper tested distances, heights and angles by controlling the deducing, and at the moment, the first hydraulic piston cylinder 15 is controlled to complete the deducing of the extrusion force pushing blocks 16, so that the extrusion force pushing blocks 16 extrude the detection containing hose 1, complete the angle stress of the soil body in the detection containing hose 1, and form sigma 1, sigma 2 and sigma 3;
and a third step of: because the soil body is forced to extrude to form surging derivation towards the top end, the second positioning auxiliary detection plate 22 is forced to push the extrusion force deriving slide bar 31, and the second spring 30 is pushed to extrude by the force deriving slide bar 31 to finally form specific force data at the pressure detector 29, so as to form sigma H;
fourth step: according to the formula:
a first formula:
a second formula:
the concrete stress triaxial degree is calculated, wherein eta is the stress triaxial degree, sigma H is the static level stress, and equivalent stress is calculated, and for a person skilled in the art, the stress triaxial degree is taken as a fracture parameter, so that theoretical support can be provided for researching different fracture mechanisms macroscopically, and the accuracy of a ductile fracture criterion established at a microscopic angle can be improved. The value of stress triaxial degree is used as a fracture mechanism, eta is used for replacing sigma in a second formula, initial crack of soil body fracture is measured to be a reserved length a of fracture toughness, fracture width of formed soil body after fracture is measured, so that W of the fracture toughness is obtained, a finite element numerical calculation is adopted for calibrating a shape parameter ya/W, and then a specific numerical value of the fracture toughness of the formed soil body 2 is calculated according to actual test data;
fifth step: separating the equivalent stress detection structure 4 from the detection accommodating hose 1, pouring out the original soil body in the detection accommodating hose 1, and inserting the detected soil body with the same weight type as the first detection into the detection accommodating hose 1;
sixth step: the third hydraulic piston cylinder 33 inside the second positioning auxiliary detection plate 22 and the first positioning auxiliary detection plate 3 is controlled to finish the derivation of the positioning locking bolt 34, so that the positioning locking bolt 34 is inserted into the soil body to form the positioning of the top end and the bottom end of the soil body;
seventh step: the second hydraulic piston cylinder 20 is controlled to finish the downward pressing of the output end, at the moment, the magnetic attraction interface 23 is started to be connected with the output end of the second hydraulic piston cylinder 20 through magnetic attraction, and the second hydraulic piston cylinder 20 is utilized to drive the output end to reset to finish the pulling of the soil body in the detection accommodating hose 1;
eighth step: before the soil body is not completely disconnected from the outside of the detection accommodating hose 1, the change of the pressure value at the pressure detector 29 is continuously observed, and according to the mechanical balance theorem, the pressure value at the pressure detector 29 is known to be the tensile stress intensity of the soil body, so that the equivalent stress value of the tensile stress intensity of the soil body is obtained.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (3)
1. The utility model provides a device of soil body fracture toughness and tensile strength which characterized in that: the device comprises a detection accommodating hose (1), a coordination detection output structure (2), a first positioning auxiliary detection plate (3) and an equivalent stress detection structure (4), wherein the bottom end of the detection accommodating hose (1) is fixedly connected with the first positioning auxiliary detection plate (3), the coordination detection output structure (2) is fixedly connected with two sides of the first positioning auxiliary detection plate (3), and the equivalent stress detection structure (4) is fixedly connected with the top end of the detection accommodating hose (1);
the automatic detection and output device comprises a detection output structure (2) and a detection output structure, wherein the detection output structure comprises a support carrying plate (5), a transverse guide block (6), a first motor (7), a screw rod (8), a polished rod (9) and a matching pushing block (10), the transverse guide block (6) is welded at the top end of the support carrying plate (5), one end of the transverse guide block (6) is fixedly connected with the first motor (7) through a screw, the output end of the first motor (7) is fixedly connected with the screw rod (8), the other end of the screw rod (8) is rotationally connected with the inner side of the transverse guide block (6), the inner side of the transverse guide block (6) is welded with two polished rods (9), the polished rods (9) are located on two sides of the screw rod (8), the matching pushing block (10) is slidingly connected with the outer side of the polished rod (9), and the inner side of the matching pushing block (10) is in threaded connection with the screw rod (8).
The automatic detection and output device is characterized in that the automatic detection and output device further comprises a rodless cylinder (11), an automatic carrying plate (12), a second motor (13), a turnover stirring block (14), a first hydraulic piston cylinder (15) and an extrusion stress pushing block (16), wherein the rodless cylinder (11) is fixedly connected to the top end of the automatic stirring block (10), one end of the rodless cylinder (11) is slidably connected with a plurality of automatic carrying plates (12), one side of the automatic carrying plate (12) is fixedly connected with the second motor (13) through screws, the output end of the second motor (13) is fixedly connected with the turnover stirring block (14), the other side of the turnover stirring block (14) is rotationally connected with the automatic carrying plate (12), one end of the turnover stirring block (14) is fixedly connected with the first hydraulic piston cylinder (15) through screws, and the output end of the first hydraulic piston cylinder (15) is fixedly connected with the extrusion stress pushing block (16);
the equivalent stress detection structure (4) comprises a detection stroke carrying tube (17), a positioning and accommodating carrying structure (18), an auxiliary carrying plate (19), a second hydraulic piston cylinder (20), a coordination detection structure (21), a second positioning auxiliary detection plate (22) and a magnetic attraction interface (23), wherein the bottom end of the detection stroke carrying tube (17) is fixedly connected with the positioning and accommodating carrying structure (18), one side of the detection stroke carrying tube (17) is fixedly connected with the auxiliary carrying plate (19), the top end of the auxiliary carrying plate (19) is fixedly connected with a second hydraulic piston cylinder (20) through a screw, the output end of the second hydraulic piston cylinder (20) is magnetically attracted and connected with a magnetic attraction interface (23), the bottom end of the magnetic attraction interface (23) is fixedly connected with a second positioning auxiliary detection plate (22), the top end of the detection stroke carrying tube (17) is fixedly connected with the coordination detection structure (21), and the bottom end of the coordination detection structure (21) is fixedly connected with the second positioning auxiliary detection plate (22);
the positioning accommodating and carrying structure (18) comprises a wide-distance carrying plate (24), auxiliary positioning plates (25), first springs (26) and adaptive clamping blocks (27), wherein the auxiliary positioning plates (25) are welded at the bottom ends of the two sides of the wide-distance carrying plate (24), the first springs (26) are welded at one side of the auxiliary positioning plates (25), the adaptive clamping blocks (27) are welded at one end of the first springs (26), and the inner sides of the adaptive clamping blocks (27) are attached to the detection accommodating hose (1);
the assembly detection structure (21) comprises a test inner rotating pipe (28), a pressure detector (29), a second spring (30) and a stress deduction slide rod (31), wherein the pressure detector (29) is fixedly connected to the top end of the test inner rotating pipe (28), the second spring (30) is fixedly connected to the bottom end of the pressure detector (29), the stress deduction slide rod (31) is welded to the bottom end of the second spring (30), the stress deduction slide rod (31) is in sliding connection with the inner side of the test inner rotating pipe (28), and the bottom end of the stress deduction slide rod (31) is welded to the second positioning auxiliary detection plate (22);
the structure of the second positioning auxiliary detection plate (22) is identical with that of the first positioning auxiliary detection plate (3), the first positioning auxiliary detection plate (3) and the second positioning auxiliary detection plate (22) comprise detection plate main bodies (32), third hydraulic piston cylinders (33) and positioning locking bolts (34), the bottom ends of two sides of the detection plate main bodies (32) are fixedly connected with the third hydraulic piston cylinders (33) through screws, and the output ends of the third hydraulic piston cylinders (33) are fixedly connected with the positioning locking bolts (34).
2. The device for fracture toughness and tensile strength of soil according to claim 1, wherein: the material of the detection accommodating hose (1) is transparent rubber.
3. A method for using a device for soil body fracture toughness and tensile strength, which is used for the device for soil body fracture toughness and tensile strength according to any one of the claims 1-2, and is characterized by comprising the following steps:
the first step: inserting a quantitative and shaped soil body into the detection accommodating hose (1), and clamping an equivalent stress detection structure (4) at the top end of the detection accommodating hose (1) through a positioning accommodating carrying structure (18);
and a second step of: the extrusion force pushing blocks (16) are positioned at proper tested distances, heights and angles through control deduction, and at the moment, the first hydraulic piston cylinder (15) is controlled to complete deduction of the extrusion force pushing blocks (16), so that the extrusion force pushing blocks (16) extrude the detection containing hose (1) to complete angular stress on soil in the detection containing hose (1), and sigma 1, sigma 2 and sigma 3 are formed;
and a third step of: the second positioning auxiliary detection plate (22) is forced to push the extrusion stress deducing slide bar (31) because the extrusion of the soil body is forced to form surging deduction towards the top end, and the second spring (30) is pushed to extrude by the stress deducing slide bar (31) to finally form specific stress data at the pressure detector (29), so that sigma H is formed;
fourth step: calculating specific fracture toughness according to a formula;
fifth step: separating the equivalent stress detection structure (4) from the detection accommodating hose (1), pouring out the original soil body in the detection accommodating hose (1), and inserting the detected soil body with the same weight type as the first detection into the detection accommodating hose (1);
sixth step: the second positioning auxiliary detection plate (22) and a third hydraulic piston cylinder (33) in the first positioning auxiliary detection plate (3) are controlled to finish deducing a positioning locking bolt (34), so that the positioning locking bolt (34) is inserted into the soil body to position the top end and the bottom end of the soil body;
seventh step: the second hydraulic piston cylinder (20) is controlled to finish the downward pressing of the output end, at the moment, the magnetic attraction interface (23) is opened and connected with the output end of the second hydraulic piston cylinder (20) through magnetic attraction, and the second hydraulic piston cylinder (20) is utilized to drive the output end to reset to finish the pulling of soil in the detection accommodating hose (1);
eighth step: and continuously observing the change of the pressure value at the pressure detector (29) before the soil body is completely disconnected from the outer side of the detection accommodating hose (1), so as to obtain the equivalent stress value of the tensile stress intensity of the soil body.
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