CN109443951B - Function stack ring for measuring axial asynchronous torsional deformation of multilayer thin material - Google Patents
Function stack ring for measuring axial asynchronous torsional deformation of multilayer thin material Download PDFInfo
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- CN109443951B CN109443951B CN201811206041.0A CN201811206041A CN109443951B CN 109443951 B CN109443951 B CN 109443951B CN 201811206041 A CN201811206041 A CN 201811206041A CN 109443951 B CN109443951 B CN 109443951B
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- displacement sensor
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- function stack
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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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
- G01N3/26—Investigating twisting or coiling properties
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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
- G01N2203/0025—Shearing
Abstract
The invention discloses a function stack ring for measuring asynchronous torsional deformation of a multilayer thin material along the axial direction, relates to the technical field of rock-soil ring shear tests, and relates to a function stack ring with a groove track, a high-sensitivity linear displacement sensor, an adjustable linear displacement sensor fixing support and an installation table. The outer edge of each laminated ring is in an oval shape with a function formula, the outer edge of each laminated ring is in contact with the high-sensitivity linear displacement sensor through the outer side wall groove, and the real-time torsion angle of each laminated ring can be indirectly calculated through the oval formula and the high-sensitivity linear displacement sensor. The device overcomes the defect that the torsional shear apparatus in the current interface shear test cannot measure the shear displacement of each layer in the multilayer geosynthetic material sample in real time, and has the advantages of easy processing, good feasibility and low manufacturing cost; the principle of the device can be applied to the design of any plate body (including cloth-shaped) material interface friction test instrument (including a large-scale torsional shear instrument), and a new design idea is developed for the device.
Description
Technical Field
The invention relates to the technical field of ring shear tests of rock and soil, in particular to a function stack ring for measuring asynchronous torsional deformation of a multilayer thin material along the axial direction.
Background art:
the increasing output of municipal solid waste and the accumulation of waste to be disposed are problems that must be solved in the construction and development of cities. The sanitary landfill is the main treatment mode at present in China and is also the essential final treatment means for garbage treatment. The liner system is used as a hydraulic barrier, is the most important component of the landfill, is laid at the bottom and four sides of the landfill, and has the function of isolating solid wastes so as to prevent the soil and underground water around the landfill from being polluted.
The liner system is composed of multiple layers of geosynthetic materials, i.e., geomembranes, geotextiles, geonets, GCLs, composite drainage networks, and the like. The modern urban sanitary landfill site is in a trend of high and large development, the maximum height of the foreign landfill site reaches 170 meters, and the maximum height of the domestic landfill site also reaches more than 100 meters. The integral stability of the landfill site is an important precondition for realizing the sanitary safety of the refuse landfill site, the strength of the liner system is crucial to the integral stability of the landfill site, and the shearing characteristic of the composite liner interface mainly composed of the geosynthetic material becomes an important factor for controlling the stability of the modern landfill site and carrying out the translation damage analysis of the modern landfill site.
The conventional test methods for researching the shearing property between different material interfaces at present are a large-scale direct shear test, a torsional shear test and an inclined plate test, and the large-scale direct shear apparatus and the inclined plate apparatus are generally used for researching the peak strength property between materials due to the defect of small shearing displacement under the equal shearing area, and are not suitable for researching the residual strength property between materials; while the shear twister theoretically has an unlimited amount of shear displacement and the shear area remains unchanged, it has been introduced by related scholars for studying the residual strength characteristics between materials. However, the conventional torsional shear apparatus is only functionally used for studying the shear characteristics between two layers of materials, or has the defect that the shear displacement of each layer in a multilayer geosynthetic material sample cannot be measured in real time when the shear characteristics of the interface between the multilayer geosynthetic materials are studied, mainly due to the fact that the geosynthetic materials are thin and soft base materials exist. So tests to study the shear properties of multilayer geosynthetic composite liners are being explored.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a technical scheme capable of measuring the shear displacement of each layer of geosynthetic material in a composite liner in real time, namely a function ring stacking device capable of measuring asynchronous torsional deformation of multiple layers of thin materials along the axial direction.
The function stack ring comprises a function stack ring, a displacement sensor, a fixed support and a mounting table, wherein the function stack ring is arranged above the mounting table, the fixed support is fixedly arranged on the mounting table, the function stack ring is formed by stacking a plurality of stack rings, the outer side wall of the function stack ring is in non-rigid contact connection with the displacement sensor, and the displacement sensor is fixedly connected with the fixed support.
Preferably, the inner side wall of the function stack ring is circular with a specific size, the outer side wall of the function stack ring is elliptical with a function formula, and a smooth groove is machined.
Preferably, the upper surface and the lower surface of the function stacking ring are respectively provided with a groove track, the groove tracks of adjacent layers are mutually overlapped to form a channel, and a plurality of miniature balls are embedded in the groove track channels of the adjacent layers.
Preferably, the displacement sensor is a high-sensitivity linear displacement sensor and comprises a shell, a telescopic rod and a miniature roller wheel, wherein one end of the telescopic rod is slidably sleeved in the shell, a spring is arranged in the shell, and the miniature roller wheel is rotatably arranged at the other end of the telescopic rod.
Preferably, the fixed bolster includes support casing, height adjusting knob, support telescopic link, anchor clamps and base, base and mount table fixed connection, the support telescopic link cup joints in the inside of support casing, height adjusting knob locates the junction of support casing and support telescopic link, anchor clamps are fixed in the end of support telescopic link, the anchor clamps centre gripping is in the outside of casing.
Preferably, the outer side wall of the function stack ring is provided with a smooth groove in contact connection with the micro roller.
The invention has the advantages that: the function stack ring for measuring the asynchronous torsional deformation of the multilayer thin material along the axial direction overcomes the defect that the existing torsional shear instrument cannot measure the shearing displacement of each layer in a multilayer geosynthetic material sample in real time, and provides technical support for a test instrument for researching and developing the shearing characteristic of the multilayer geosynthetic material composite liner.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a three-dimensional cutaway view of the present invention.
Fig. 3 is a top view of the present invention.
FIG. 4 is a three-dimensional schematic of a laminated ring of the present invention.
Figure 5 is an elevational cross-sectional view of a stack ring of the present invention.
Fig. 6 is a three-dimensional schematic view of a displacement sensor and a fixed bracket according to the present invention.
Wherein: 1: function loop stack, 1-1: groove track, 1-2: smooth groove, 1-3: micro ball, 1-4: inner side wall, 2: displacement sensor, 2-1: shell, 2-2: telescopic rod, 2-3: micro roller, 3: fixed support, 3-1: bracket shell, 3-2: height adjusting knob, 3-3: support telescopic link, 3-4: clamp, 3-5: base, 4: and (7) mounting a table.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, a function stack ring for measuring the asynchronous torsional deformation of a multilayer thin material along the axial direction comprises a function stack ring 1, a displacement sensor 2, a fixed support 3 and a mounting table 4, wherein the function stack ring 1 is arranged above the mounting table 4, each stack ring is fixedly connected with a test sample and can axially and relatively displace with the mounting table 4, the fixed support 3 is fixedly arranged on the mounting table 4, the function stack ring 1 is formed by stacking a plurality of stack rings, the outer side wall of the function stack ring is connected with the displacement sensor 2 in a non-rigid contact manner, and the displacement sensor 2 is fixedly connected with the fixed support 3.
It is worth noting that the inner side wall 1-4 of the function stack ring 1 is circular with a specific size, the outer side is oval with a function formula, and the circular inner side wall is used for bonding test materials; smooth grooves are processed on the oval outer side walls and used for providing restraint and telescopic migration tracks for rollers at the front ends of the linear displacement sensors.
In the embodiment, groove tracks 1-1 are machined on the upper surface and the lower surface of each function stack ring 1, the groove tracks 1-1 of adjacent layers are overlapped to form a channel, a plurality of micro balls 1-3 are embedded in the channels of the groove tracks 1-1 of the adjacent layers, the fixing of the displacement tracks between the stack rings and the reduction of the friction between the stack rings are realized through the groove tracks 1-1 and the micro balls 1-3 (see fig. 4), the first purpose is to eliminate the friction force between the function stack rings, and the second purpose is to provide displacement constraint for the adjacent function stack rings.
In this embodiment, the displacement sensor 2 is a high-sensitivity linear displacement sensor, and includes a housing 2-1, a telescopic rod 2-2, and a micro roller 2-3, wherein one end of the telescopic rod 2-2 is slidably sleeved inside the housing 2-1, a spring is disposed inside the housing 2-1, the spring has a certain telescopic force and is used for keeping the micro roller 2-3 and the smooth groove 1-2 on the outer side wall of the stack ring in real time in close contact, and the micro roller 2-3 is rotatably disposed at the other end of the telescopic rod 2-2.
In this embodiment, the fixing bracket 3 includes a bracket shell 3-1, a height adjusting knob 3-2, a bracket telescopic rod 3-3, a clamp 3-4 and a base 3-5, the base 3-5 is fixedly connected with the mounting table 4, the bracket telescopic rod 3-3 is sleeved inside the bracket shell 3-1, the height adjusting knob 3-2 is arranged at the connection position of the bracket shell 3-1 and the bracket telescopic rod 3-3, the clamp 3-4 is fixed at the tail end of the bracket telescopic rod 3-3, and the clamp 3-4 is clamped outside the shell 2-1.
In the embodiment, the outer side wall of the function stack ring 1 is provided with a smooth groove 1-2 in contact connection with a micro roller 2-3, the micro roller 2-3 moves along the track of the smooth groove 1-2 on the outer side wall, an elliptic track defined by a function drives the displacement sensor 2 to perform telescopic motion, a real-time corner of the function stack ring 1 can be obtained through calculation, and the inner side wall 1-4 is used for bonding thin materials.
Based on the function stack ring for measuring the asynchronous torsional deformation of the multilayer thin material along the axial direction, the thin material is bonded and applied to the inner side wall 1-4 of each layer of function stack ring 1, the thickness of the function stack ring 1 is required to be smaller than that of the thin material, the relative torsional track of the stack ring is locked and friction is eliminated to a great extent by adopting the groove track 1-1 with the embedded miniature balls 1-3 between the stack rings, the outer edge of the stack ring adopts an oval shape with a certain function definition, each stack ring drives (extrudes or pulls) the high-sensitivity linear displacement sensor 2 to perform telescopic displacement motion in the real-time torsional process, the telescopic amount of the high-sensitivity linear displacement sensor 2 and the oval function are used for indirect calculation, and then the real-time torsional angle of each layer of thin material is obtained.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (2)
1. A function stack ring for measuring asynchronous torsional deformation of a multilayer thin material along the axial direction comprises a function stack ring (1), a displacement sensor (2), a fixed support (3) and a mounting table (4), wherein the function stack ring (1) is arranged above the mounting table (4), and the fixed support (3) is fixedly arranged on the mounting table (4), and is characterized in that the function stack ring (1) is formed by stacking a plurality of stack rings, the outer side wall of the function stack ring is connected with the displacement sensor (2) in a non-rigid contact manner, and the displacement sensor (2) is fixedly connected with the fixed support (3);
the inner side wall (1-4) of the function stack ring (1) is circular with a specific size, the outer side of the function stack ring is oval with a function formula, and smooth grooves (1-2) are machined;
the displacement sensor (2) is a high-sensitivity linear displacement sensor and comprises a shell (2-1), a telescopic rod (2-2) and a micro roller (2-3), one end of the telescopic rod (2-2) is sleeved in the shell (2-1) in a sliding mode, a spring is arranged in the shell (2-1), and the micro roller (2-3) is rotatably arranged at the other end of the telescopic rod (2-2);
the outer side wall of the function stack ring (1) is provided with a smooth groove (1-2) in contact connection with the micro roller (2-3);
groove tracks (1-1) are machined on the upper surface and the lower surface of the function stack ring (1), the groove tracks (1-1) of adjacent layers are overlapped to form a channel, and a plurality of miniature balls (1-3) are embedded in the channel of the groove tracks (1-1) of the adjacent layers.
2. A functional stack for measuring axially unsynchronized torsional deformations of a plurality of layers of thin body material as defined in claim 1, wherein: the fixing support (3) comprises a support shell (3-1), a height adjusting knob (3-2), a support telescopic rod (3-3), a clamp (3-4) and a base (3-5), the base (3-5) is fixedly connected with an installation table (4), the support telescopic rod (3-3) is sleeved inside the support shell (3-1), the height adjusting knob (3-2) is arranged at the joint of the support shell (3-1) and the support telescopic rod (3-3), the clamp (3-4) is fixed at the tail end of the support telescopic rod (3-3), and the clamp (3-4) is clamped outside the shell (2-1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811206041.0A CN109443951B (en) | 2018-10-17 | 2018-10-17 | Function stack ring for measuring axial asynchronous torsional deformation of multilayer thin material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811206041.0A CN109443951B (en) | 2018-10-17 | 2018-10-17 | Function stack ring for measuring axial asynchronous torsional deformation of multilayer thin material |
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| CN109443951A CN109443951A (en) | 2019-03-08 |
| CN109443951B true CN109443951B (en) | 2021-09-28 |
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| CN110308263B (en) * | 2019-07-18 | 2024-01-26 | 天水红山试验机有限公司 | Coarse-grained soil compression test pressure chamber |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603903A (en) * | 2009-07-07 | 2009-12-16 | 河海大学 | Stacked ring type boxshear apparatus and to the method for testing composite liner material |
| CN201449359U (en) * | 2009-07-07 | 2010-05-05 | 河海大学 | Superposed ring type dual-purpose (direct-shear and single-shear) shear apparatus |
| CN102323166A (en) * | 2011-08-19 | 2012-01-18 | 河海大学 | Cascade circular inclined plane shearing apparatus |
| CN102518901A (en) * | 2011-11-24 | 2012-06-27 | 陈墅庚 | Plunger type multifunctional pipeline compensator |
| CN204536164U (en) * | 2015-03-25 | 2015-08-05 | 河海大学 | A kind of indoor measurement soil sample gas-phase permeation coefficient unit |
| CN107782521A (en) * | 2017-02-28 | 2018-03-09 | 浙江大学 | A kind of three-dimensional mobile decoupling periodic structure for shake table model casing |
| CN108037023A (en) * | 2018-02-01 | 2018-05-15 | 福建省地质工程勘察院 | A kind of folded ring shear box and the stacked ring type shearing test based on folded ring shear box |
| CN108225945A (en) * | 2018-02-01 | 2018-06-29 | 福建省地质工程勘察院 | A kind of stacked ring type ring shear apparatus and stacked ring shear test |
| CN207832592U (en) * | 2018-02-01 | 2018-09-07 | 福建省地质工程勘察院 | A kind of stacked ring type ring suitable for stacked ring type shearing test cuts box |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191007077A (en) * | 1910-03-21 | 1910-11-24 | Harold Williamson Lake | Improvements in and relating to Machines for Manufacturing Metal Ring Fabrics. |
| US4401481A (en) * | 1980-01-10 | 1983-08-30 | Morgan Construction Company | Steel rod rolling process, product and apparatus |
| DE3046228A1 (en) * | 1980-12-08 | 1982-07-22 | Akzo Gmbh, 5600 Wuppertal | COLOR RIBBON |
| US5639641A (en) * | 1992-09-09 | 1997-06-17 | Immunogen Inc. | Resurfacing of rodent antibodies |
| CA2194196A1 (en) * | 1996-12-31 | 1998-06-30 | Douglas Ayres | Internal combustion engines utilizing complete unit charge air/fuel injection |
| CN100534029C (en) * | 2004-12-06 | 2009-08-26 | 广东工业大学 | Multi-foldable circle face chaos circuit |
| CN103292732B (en) * | 2013-05-20 | 2016-05-25 | 华中科技大学 | A kind of large-scale free form surface on-machine measurement device of extension type |
| CN104142277B (en) * | 2014-08-08 | 2016-07-06 | 重庆大学 | A kind of soil body torsional shear infiltration experiment device and method of testing |
| CN105571957B (en) * | 2016-02-02 | 2018-10-23 | 河海大学 | Measure the large-scale model case and application method of coarse-grained soil shearing strength |
| CN106175674A (en) * | 2016-06-30 | 2016-12-07 | 浙江中医药大学 | A kind of somatic data harvester of lever location maneuver |
| US9737106B1 (en) * | 2017-02-17 | 2017-08-22 | Thomas Calvin Cannon, Jr. | Method and apparatus for mitigating concussions |
| CN108398776A (en) * | 2018-03-30 | 2018-08-14 | 河北工业大学 | A kind of general level adjusting apparatus adapted on microscope |
-
2018
- 2018-10-17 CN CN201811206041.0A patent/CN109443951B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603903A (en) * | 2009-07-07 | 2009-12-16 | 河海大学 | Stacked ring type boxshear apparatus and to the method for testing composite liner material |
| CN201449359U (en) * | 2009-07-07 | 2010-05-05 | 河海大学 | Superposed ring type dual-purpose (direct-shear and single-shear) shear apparatus |
| CN102323166A (en) * | 2011-08-19 | 2012-01-18 | 河海大学 | Cascade circular inclined plane shearing apparatus |
| CN102518901A (en) * | 2011-11-24 | 2012-06-27 | 陈墅庚 | Plunger type multifunctional pipeline compensator |
| CN204536164U (en) * | 2015-03-25 | 2015-08-05 | 河海大学 | A kind of indoor measurement soil sample gas-phase permeation coefficient unit |
| CN107782521A (en) * | 2017-02-28 | 2018-03-09 | 浙江大学 | A kind of three-dimensional mobile decoupling periodic structure for shake table model casing |
| CN108037023A (en) * | 2018-02-01 | 2018-05-15 | 福建省地质工程勘察院 | A kind of folded ring shear box and the stacked ring type shearing test based on folded ring shear box |
| CN108225945A (en) * | 2018-02-01 | 2018-06-29 | 福建省地质工程勘察院 | A kind of stacked ring type ring shear apparatus and stacked ring shear test |
| CN207832592U (en) * | 2018-02-01 | 2018-09-07 | 福建省地质工程勘察院 | A kind of stacked ring type ring suitable for stacked ring type shearing test cuts box |
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