CN114486505A - Test fixture device and test method for interlayer contact parameters of pavement structure - Google Patents
Test fixture device and test method for interlayer contact parameters of pavement structure Download PDFInfo
- Publication number
- CN114486505A CN114486505A CN202210032337.5A CN202210032337A CN114486505A CN 114486505 A CN114486505 A CN 114486505A CN 202210032337 A CN202210032337 A CN 202210032337A CN 114486505 A CN114486505 A CN 114486505A
- Authority
- CN
- China
- Prior art keywords
- test piece
- clamp
- test
- pavement structure
- interlayer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 184
- 239000011229 interlayer Substances 0.000 title claims abstract description 42
- 238000010998 test method Methods 0.000 title claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 37
- 238000010030 laminating Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims abstract 2
- 230000005540 biological transmission Effects 0.000 claims description 21
- 239000010410 layer Substances 0.000 claims description 10
- 230000003068 static effect Effects 0.000 claims description 3
- 238000010008 shearing Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a test fixture device and a test method for interlayer contact parameters of a pavement structure, wherein the test fixture device comprises a test piece, a fixing fixture for fixing the test piece and a horizontal loading device; the test piece is used for simulating a composite pavement structure, the test piece is of a cylindrical structure, the cylindrical structure is a whole formed by laminating two cylinders, and the laminated part of the two cylinders is an interlayer interface; during testing, after the cylindrical structure is clamped by a fixing clamp, the central axis of the cylindrical structure is placed in parallel with the ground, the force applying end of the horizontal loading device is in contact with the round end part of the test piece, and vertical force is applied to the test piece; a pressure head contact gasket is arranged at the center of the fixed clamp, and a loading pressure head of the testing machine applies interlayer force to the test piece through the pressure head contact gasket; the method can obtain the interlayer state parameters of the shear state of the composite pavement structure under the vertical load, and simulate the stress condition of the interlayer interface of the pavement more truly.
Description
Technical Field
The invention relates to a test fixture device and a test method for interlayer contact parameters of a pavement structure, and belongs to the field of road engineering.
Background
The interface between layers on the road surface is the link that the whole body of the road surface structure is weak, when the integrity of the state between layers is poor and the strength is low, the interface between layers is easy to have the defects of slippage, hugging, U-shaped cracks and the like, and the service performance of the road surface is influenced, namely the service life is prolonged. At present, the mainstream indoor test methods for the interlayer state of the pavement mainly comprise a direct shear test, an oblique shear test, a torque test and a drawing test.
Because the road surface structure receives the coupling effect of shearing and normal force in the in-service use, the real road surface stress state can be simulated better relatively in the direct shear test, but the direct shear test can only exert the shearing force and can not exert vertical force, so all have certain defect to real road surface structure stress condition when carrying out the shear test between the layers, also lack the rule to compound road surface structure state parameter between the layers in the relevant experimental specification, need urgently to make the design to test and corresponding testing arrangement that can truly simulate road surface stress state between the layers.
Disclosure of Invention
The invention provides a test fixture device and a test method for interlayer contact parameters of a pavement structure, which can obtain interlayer state parameters of a composite pavement structure in a shearing state under vertical load and simulate the stress condition of an interlayer interface of the pavement more truly.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a test fixture device for interlayer contact parameters of a pavement structure comprises a test piece, a fixing fixture for fixing the test piece and a horizontal loading device;
the test piece is used for simulating a composite pavement structure and is of a cylindrical structure, the cylindrical structure is a whole formed by laminating two cylinders, and the laminated part of the two cylinders is an interlayer interface; during testing, after the cylindrical structure is clamped by a fixing clamp, the central axis of the cylindrical structure is placed in parallel with the ground, the force applying end of the horizontal loading device is in contact with the round end part of the test piece, and vertical force is applied to the test piece;
a pressure head contact gasket is arranged at the center of the fixed clamp, and a loading pressure head of the testing machine applies interlayer force to the test piece through the pressure head contact gasket;
as a further preferred aspect of the present invention,
the fixing clamp comprises a left clamp and a right clamp, the left clamp and the right clamp are both L-shaped, the transverse part of the left clamp is arranged in parallel with the ground, and the transverse part of the right clamp is covered on the top of the vertical part of the left clamp;
the middle positions of the vertical parts of the left clamp and the right clamp are provided with through circular grooves, and two end parts of the cylindrical structure respectively extend out of the circular grooves of the left clamp and the right clamp;
a pressure head contact gasket is arranged at the center of the transverse part of the left clamp, and a loading pressure head of the testing machine applies interlayer force to the test piece through the pressure head contact gasket;
as a further preferred aspect of the present invention,
a connecting line formed by the interlayer interface and the pressure head contact gasket is vertical to the ground;
as a further preferred aspect of the present invention,
the fixing clamp further comprises a clamp base, and the transverse part of the left clamp is fixed on the clamp base;
as a further preferred aspect of the present invention,
a plurality of pairs of guide rail bearings are arranged on the surface of the clamp base, and the guide rail bearings are contacted with the bottom of the transverse part of the left clamp;
as a further preferred aspect of the present invention,
the horizontal loading device comprises a hydraulic loader, a transmission rod, a pressure sensor and a clamping plate, wherein the hydraulic loader is connected with the clamping plate through the transmission rod, the plate surface on one side of the clamping plate is arranged perpendicular to the end part of the transmission rod, and the plate surface on the other side of the clamping plate is in contact with the round end part of the test piece;
a pressure sensor is arranged on the rod body of the transmission rod;
as a further preferred aspect of the present invention,
the clamp comprises a clamp base, a hydraulic loader and a transmission rod, wherein the clamp base is fixed on the bottom edge of the test piece outer frame, two side edges are perpendicular to two ends of the bottom edge, the hydraulic loader is fixed on one side edge of the test piece outer frame through a bolt, and the transmission rod penetrates through one side edge of the test piece outer frame to be in contact with a test piece;
as a further preferred aspect of the present invention,
setting a fixed slot position at the position of the other side edge of the test piece outer frame corresponding to the test piece;
a test method of a test fixture device for testing the interlayer contact parameters of a pavement structure specifically comprises the following steps:
step S1: selecting a composite pavement structure test piece, cutting after coring, and carrying out static pressure forming on the composite test piece by adopting a cylinder to obtain a cylindrical test piece, wherein the cylindrical test piece is formed by superposing two cylinders with the same height;
step S2: the composite pavement structure test piece is placed with the central axis parallel to the ground and is installed on the transverse part surface of the left clamp, one end of the composite pavement structure test piece penetrates through the circular groove of the left clamp, the circular groove of the right clamp is sleeved at the other end of the composite pavement structure test piece, and the distance between the fixing clamps is adjusted by matching with a bolt, so that a connecting line formed by an interlayer interface of the composite pavement structure test piece and a pressure head contact gasket of the fixing clamp is perpendicular to the ground;
step S3: fixing the transverse part of the left clamp on a clamp base, and fixing the clamp base on the bottom edge of the test piece outer frame after a horizontal loading device is installed on the side edge of the test piece outer frame;
step S4: starting a hydraulic loader, applying a vertical force to the composite pavement structure test piece through a clamping plate by a transmission rod, and displaying the magnitude of the load by a pressure sensor display instrument on a rod body of the transmission rod until the load reading displayed on the pressure sensor is stable;
step S5: putting the whole structure into an environment box of a UTM testing machine, controlling the temperature required by the test and presetting the duration;
step S6: aligning a loading pressure head of the UTM testing machine to a pressure head contact gasket on the fixed clamp, starting the UTM testing machine, and performing a direct shear test;
step S7: in a direct shear test, obtaining a stress-strain curve from loading to failure of an interlayer interface under a shear condition of applying a vertical load, and obtaining an interlayer contact parameter of a pavement structure under a set condition;
as a further preferred aspect of the present invention,
in step S2, when the fixing jig is used to fix the composite pavement structure test piece, a distance is left between the lateral portion of the left jig, the lateral portion of the right jig, and the composite pavement structure test piece.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the invention overcomes the defect that the vertical load can not be applied in the direct shear test, and more truly simulates the stress state between the road surface structure layers through the loading of the horizontal constant force of the horizontal loading device and the loading of the matched test equipment on the interlayer force of the composite road surface structure test piece;
2. the horizontal loading device and the fixing clamp can be freely assembled and disassembled, and the horizontal loading device has the advantages of portability and easiness in operation, and is lower in cost and excellent in economical efficiency compared with other devices for simulating interlaminar shearing;
3. the test fixture device provided by the invention can be matched with most shear test instruments to complete shear tests, such as universal material testing machines, UTM testing machines and MTS testing machines, and the device has good adaptability, only needs to correspond to test pieces with composite pavement structures to meet the required test piece size, and has strong universality.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is an overall schematic view of a preferred embodiment provided by the present invention;
FIG. 2 is a side view of a preferred embodiment of the present invention.
In the figure: the device comprises a fixed clamp 1, a left clamp 11, a right clamp 12, a horizontal loading device 2, a hydraulic loader 21, a pressure sensor 22, a clamping plate 23, a clamp base 3, a test piece outer frame 4, a guide rail bearing 5 and a fixing groove 6.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present application, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.
As explained in the background, in the direct shear test, only the shear force can be applied, not the vertical force, but the real pavement structure is obviously not only applied with a force in a single direction, so that the real state between the composite pavement structure layers can not be accurately displayed in the related test.
Based on this, this application aims at providing a road surface structure layer contact parameter's test fixture device, can solve above-mentioned problem.
As shown in fig. 1 as a whole, the present application mainly includes three parts: the device comprises a test piece, a fixing clamp 1 for fixing the test piece and a horizontal loading device 2; the test piece for testing is of a cylindrical structure and is an integral formed by the attachment of two cylinders, and the attachment part of the two cylinders is an interlayer interface; during testing, after the cylindrical structure is clamped by the fixing clamp, the central axis of the cylindrical structure is placed in parallel with the ground, and the force applying end of the horizontal loading device is in contact with the round end part of the test piece, so that vertical force can be applied to the test piece; it should be noted that the vertical force applied here is actually the force applied in a direction parallel to the ground through the horizontal loading device, so that the pressure head contact gasket is arranged at the center of the fixing clamp, the loading pressure head of the testing machine applies interlayer force to the test piece through the pressure head contact gasket, the force applied to the test piece in the direction perpendicular to the ground can be realized, and the requirements of applying the shearing force and the vertical force at the same time can be met.
The application provides a preferable fixing clamp which has a simple structure and strong functions, and specifically comprises a left clamp 11 and a right clamp 12 which are both L-shaped, wherein the transverse part of the left clamp is arranged in parallel with the ground, and the transverse part of the right clamp is covered on the top of the vertical part of the left clamp; the middle positions of the vertical parts of the left clamp and the right clamp are provided with through circular grooves, and two end parts of the cylindrical structure respectively extend out of the circular grooves of the left clamp and the right clamp; the side view of the left and right clamps after being spliced is shown in fig. 2, and it should be explained here that the protrusions located at both sides of the middle position of the view in fig. 2 are connecting parts provided on the left and right clamps for connecting the left and right clamps. And a pressure head contact gasket is arranged at the center of the transverse part of the left clamp, and a loading pressure head of the testing machine applies interlayer force to the test piece through the pressure head contact gasket. The left clamp and the right clamp are detached and fixed through the connection screw hole arranged in the middle part and matched with the connection bolt, so that the distance between the left clamp and the right clamp can be adjusted.
In order to more accurately obtain the test parameters of the interlayer force, the test piece needs to be placed at the center of the fixing clamp, and a connecting line formed by the interlayer interface and the pressure head contact gasket is ensured to be perpendicular to the ground, so that a related test instrument (such as a UTM tester) can use the interlayer interface as a loading surface.
When the test is carried out, the stability of the test piece needs to be maintained, so that the clamp base 3 is arranged, and the transverse part of the left clamp is fixed on the clamp base, so that the influence of the generated horizontal friction force on the test result is reduced. Here, when the left jig is fixed to the jig base, a plurality of pairs of rail bearings 5 are provided on the surface of the jig base in order to further improve the stability.
In the application, the device for applying the vertical force is a horizontal loading device and comprises a hydraulic loader 21, a transmission rod, a pressure sensor 22 and a clamping plate 23, wherein the hydraulic loader is connected with the clamping plate through the transmission rod, the plate surface on one side of the clamping plate is arranged perpendicular to the end part of the transmission rod, the plate surface on the other side of the clamping plate is in contact with the round end part of the test piece, and the size of the plate surface of the clamping plate is close to the size of the surface of the test piece with the composite pavement structure in actual operation; the application of vertical load needs to observe data in real time, so a pressure sensor is arranged on the rod body of the transmission rod. Still include test piece frame 4 in this application, its main effect is used for fixed horizontal loading device to the realization applys stable vertical force to the test piece, the anchor clamps base is fixed on the base of test piece frame, and with base both ends vertically be two sides, hydraulic pressure loader passes through bolt fastening at one of them side of test piece frame, and one of them side and the test piece contact of test piece frame are worn to establish by the transfer line.
Because the horizontal loading device only exerts at one side of test piece, consequently in order to evenly bear the horizontal force that the horizontal loading device exerted, set up fixed trench 6 at the relative test piece position of another side of test piece frame, the one end atress of test piece, the other end imbeds in the fixed trench and realizes firmly.
Finally, the present application provides a test method for an embodiment based on the test fixture apparatus provided above, specifically including the steps of:
step S1: selecting a composite pavement structure test piece, cutting after coring, and adopting a cylinder to perform static pressure forming on the composite test piece to obtain a cylindrical test piece with the diameter of 150mm and the height of 100mm, wherein the cylindrical test piece is formed by superposing two cylinders with the height of 50 mm.
Step S2: the composite pavement structure test piece is placed with the central axis parallel to the ground and is installed on the transverse part surface of the left clamp, one end of the composite pavement structure test piece penetrates through the circular groove of the left clamp, the circular groove of the right clamp is sleeved at the other end of the composite pavement structure test piece, and the distance between the fixing clamps is adjusted by matching with a bolt, so that a connecting line formed by an interlayer interface of the composite pavement structure test piece and a pressure head contact gasket of the fixing clamp is perpendicular to the ground; when the fixing clamp is used for fixing the composite pavement structure test piece, the transverse part of the left clamp, the transverse part of the right clamp and the composite pavement structure test piece are spaced, so that enough space is ensured to enable the composite pavement structure test piece to damage and displace.
Step S3: and fixing the transverse part of the left clamp on a clamp base, and fixing the clamp base on the bottom edge of the test piece outer frame after a horizontal loading device is installed on the side edge of the test piece outer frame.
Step S4: the hydraulic loader is started, the transmission rod applies vertical force to the composite pavement structure test piece through the clamping plate, and the pressure sensor display instrument on the rod body of the transmission rod controls the load size until the load reading displayed on the pressure sensor is stable.
Step S5: and (4) putting the whole structure into an environment box of a UTM testing machine, and controlling the temperature required by the test for 4 hours.
Step S6: and aligning a loading pressure head of the UTM testing machine to a pressure head contact gasket on the fixed clamp, namely the center of the fixed clamp, starting the UTM testing machine, and performing direct shear test.
Step S7: in a direct shear test, a stress-strain curve of an interlaminar interface from loading to failure under a shear condition of applying a vertical load is obtained, and the interlaminar contact parameters of the pavement structure under a set condition are obtained.
Through experiment, the application provides a test fixture device
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" as used herein is intended to include both the individual components or both.
The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The utility model provides a road surface structure layer contact parameter's test fixture device which characterized in that: the device comprises a test piece, a fixing clamp (1) for fixing the test piece and a horizontal loading device (2);
the test piece is used for simulating a composite pavement structure and is of a cylindrical structure, the cylindrical structure is a whole formed by laminating two cylinders, and the laminated part of the two cylinders is an interlayer interface; during testing, after the cylindrical structure is clamped by the fixing clamp (1), the central axis of the cylindrical structure is placed in parallel with the ground, the force applying end of the horizontal loading device (2) is in contact with the round end part of the test piece, and vertical force is applied to the test piece;
the center position of mounting fixture (1) sets up pressure head contact pad, and the loading pressure head of testing machine passes through pressure head contact pad and applys interlaminar power to the test piece.
2. The test fixture device for testing the interlayer contact parameters of the pavement structure according to claim 1, wherein:
the fixing clamp (1) comprises a left clamp (11) and a right clamp (12), the left clamp (11) and the right clamp (12) are L-shaped, the transverse part of the left clamp (11) is arranged in parallel with the ground, and the transverse part of the right clamp (12) is arranged on the top of the vertical part of the left clamp (11);
the middle positions of the vertical parts of the left clamp (11) and the right clamp (12) are provided with through circular grooves, and two end parts of the cylindrical structure respectively extend out of the circular grooves of the left clamp (11) and the right clamp (12);
and a pressure head contact gasket is arranged at the center of the transverse part of the left clamp (11), and a loading pressure head of the testing machine applies interlayer force to the test piece through the pressure head contact gasket.
3. The test fixture device for testing the interlayer contact parameters of the pavement structure according to claim 2, wherein: the interlayer interface and a connecting line formed by the pressure head contact gasket are vertical to the ground.
4. The test fixture device for testing the interlayer contact parameters of the pavement structure according to claim 1, wherein: the fixing clamp (1) further comprises a clamp base (3), and the transverse part of the left clamp (11) is fixed on the clamp base (3).
5. The test fixture device for testing the interlayer contact parameters of the pavement structure according to claim 4, wherein: the surface of the clamp base (3) is provided with a plurality of pairs of guide rail bearings, and the guide rail bearings (5) are contacted with the bottom of the transverse part of the left clamp (11).
6. The test fixture device for testing the interlayer contact parameters of the pavement structure according to claim 1, wherein: the horizontal loading device (2) comprises a hydraulic loader (21), a transmission rod, a pressure sensor (22) and a clamping plate (23), the hydraulic loader (21) is connected with the clamping plate (23) through the transmission rod, the plate surface on one side of the clamping plate (23) is arranged perpendicular to the end part of the transmission rod, and the plate surface on the other side of the clamping plate (23) is in contact with the round end part of the test piece;
and a pressure sensor (22) is arranged on the transmission rod body.
7. The test fixture device for testing the interlayer contact parameters of the pavement structure according to claim 4 or 6, wherein: the fixture is characterized by further comprising a test piece outer frame (4), the fixture base (3) is fixed on the bottom edge of the test piece outer frame (4), two side edges are perpendicular to the two ends of the bottom edge, the hydraulic loader (21) is fixed on one of the side edges of the test piece outer frame (4) through a bolt, and the transmission rod penetrates through one of the side edges of the test piece outer frame (4) to be in contact with a test piece.
8. The test fixture device for testing the interlayer contact parameters of the pavement structure according to claim 7, wherein: and a fixed slot position (6) is arranged at the other side edge of the test piece outer frame (4) corresponding to the position of the test piece.
9. A test method of a test fixture device for testing the interlayer contact parameters of a pavement structure is characterized by comprising the following steps of: the method specifically comprises the following steps:
step S1: selecting a composite pavement structure test piece, cutting after coring, and carrying out static pressure forming on the composite test piece by adopting a cylinder to obtain a cylindrical test piece, wherein the cylindrical test piece is formed by superposing two cylinders with the same height;
step S2: the composite pavement structure test piece is placed with the central axis parallel to the ground and is installed on the surface of the transverse part of the left clamp (11), one end of the composite pavement structure test piece penetrates through the circular groove of the left clamp (11), the circular groove of the right clamp (12) is sleeved at the other end of the composite pavement structure test piece, and the distance between the fixing clamps (1) is adjusted by matching with a bolt, so that a connecting line formed by an interlayer interface of the composite pavement structure test piece and a pressure head contact gasket of the fixing clamp (1) is perpendicular to the ground;
step S3: fixing the transverse part of a left clamp (11) on a clamp base (3), and after installing a horizontal loading device (2) on the side edge of a test piece outer frame (4), fixing the clamp base (3) on the bottom edge of the test piece outer frame (4);
step S4: starting a hydraulic loader (21), applying a vertical force to the composite pavement structure test piece through a clamping plate (23) by a transmission rod, and displaying the magnitude of the control load of the instrument by a pressure sensor (22) on a rod body of the transmission rod until the load reading displayed on the pressure sensor (22) is stable;
step S5: putting the whole structure into an environment box of a UTM testing machine, controlling the temperature required by the test and presetting the duration;
step S6: aligning a loading pressure head of the UTM testing machine to a pressure head contact gasket on the fixed clamp (1), starting the UTM testing machine, and performing a direct shear test;
step S7: in a direct shear test, a stress-strain curve of an interlaminar interface from loading to failure under a shear condition of applying a vertical load is obtained, and the interlaminar contact parameters of the pavement structure under a set condition are obtained.
10. The test method of the test jig apparatus for road surface structure interlayer contact parameters according to claim 9, characterized in that: in step S2, when the fixing jig (1) fixes the composite pavement structure test piece, a distance is left between the lateral portion of the left jig (11), the lateral portion of the right jig (12), and the composite pavement structure test piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210032337.5A CN114486505A (en) | 2022-01-12 | 2022-01-12 | Test fixture device and test method for interlayer contact parameters of pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210032337.5A CN114486505A (en) | 2022-01-12 | 2022-01-12 | Test fixture device and test method for interlayer contact parameters of pavement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114486505A true CN114486505A (en) | 2022-05-13 |
Family
ID=81512798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210032337.5A Pending CN114486505A (en) | 2022-01-12 | 2022-01-12 | Test fixture device and test method for interlayer contact parameters of pavement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114486505A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620054A (en) * | 2009-07-03 | 2010-01-06 | 张磊 | Pavement structure and testing device for bridge deck pavement bonding interface shearing-resistance characteristic |
| CN102095680A (en) * | 2010-12-30 | 2011-06-15 | 中交第一公路勘察设计研究院有限公司 | Clamp and method for testing pavement interlayer shear fatigue test piece |
| CN108240965A (en) * | 2017-12-06 | 2018-07-03 | 江西省高速公路投资集团有限责任公司 | A kind of bituminous paving interlayer adhesion strength detection device and its detection method |
| CN108956334A (en) * | 2018-08-14 | 2018-12-07 | 长沙理工大学 | The test device of paving mix and its structure Interlaminar shear strengths |
| CN111999243A (en) * | 2020-08-28 | 2020-11-27 | 西南交通大学 | Asphalt pavement interlayer bonding performance cutting-drawing test device and evaluation method thereof |
-
2022
- 2022-01-12 CN CN202210032337.5A patent/CN114486505A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620054A (en) * | 2009-07-03 | 2010-01-06 | 张磊 | Pavement structure and testing device for bridge deck pavement bonding interface shearing-resistance characteristic |
| CN102095680A (en) * | 2010-12-30 | 2011-06-15 | 中交第一公路勘察设计研究院有限公司 | Clamp and method for testing pavement interlayer shear fatigue test piece |
| CN108240965A (en) * | 2017-12-06 | 2018-07-03 | 江西省高速公路投资集团有限责任公司 | A kind of bituminous paving interlayer adhesion strength detection device and its detection method |
| CN108956334A (en) * | 2018-08-14 | 2018-12-07 | 长沙理工大学 | The test device of paving mix and its structure Interlaminar shear strengths |
| CN111999243A (en) * | 2020-08-28 | 2020-11-27 | 西南交通大学 | Asphalt pavement interlayer bonding performance cutting-drawing test device and evaluation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107290231B (en) | Torsion equipment for testing material performance | |
| CN108204916A (en) | A kind of shearing-low temperature coupling experiment device and method for penetrating through crack | |
| CN202582991U (en) | Bolt shear fatigue test fixture device | |
| CN109738302B (en) | Testing device and method for rock direct shear-seepage | |
| CN102841021A (en) | Low-temperature splitting tester for fiber asphalt mixture | |
| CN106644727A (en) | Testing device of rigid and flexible composite test piece asphalt layer rebound modulus and method thereof | |
| CN211784761U (en) | Multifunctional road material shear strength test fixture | |
| CA2814021C (en) | System and method for testing a fillet bond | |
| CN114486505A (en) | Test fixture device and test method for interlayer contact parameters of pavement structure | |
| CN103630448A (en) | Pavement structure interlayer interface shear strength testing device and method thereof | |
| CN106679913B (en) | Metamaterial vibration isolator mechanical property testing device | |
| CN110044738B (en) | Fatigue test device with controllable applied multi-axis stress of welding seam and application method thereof | |
| CN113588412B (en) | Surrounding rock stability test fixture and test method | |
| CN115979785A (en) | Acoustic emission testing device and coal rock roadway testing device and method based on acoustic emission testing device | |
| CN114216799A (en) | Composite material interlayer fracture toughness test clamp under low-speed impact and use method thereof | |
| CN110220791B (en) | Axial tensile test device for cylindrical concrete member | |
| CN219694742U (en) | Positioning device based on triaxial test machine | |
| CN207066876U (en) | A kind of non-standard concrete fracture performance test apparatus | |
| CN218200524U (en) | Slide rail device for batch test | |
| CN215931517U (en) | Concrete in-situ splitting test device | |
| CN219996850U (en) | Testing device for adhesive force of curved surface coating | |
| CN217403986U (en) | Point-supported glass curtain wall refutes and connects, centre gripping head mechanical properties testing arrangement | |
| CN216208142U (en) | Biaxial stretching loading device | |
| CN215339225U (en) | Universal testing machine clamp for building sealing material tensile test | |
| AU2021102214A4 (en) | Triaxial Tensile Test Device and Method for Rocks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |