CN104990811B - A kind of composite pavement stress absorption interlayer stress spread performance study device - Google Patents
A kind of composite pavement stress absorption interlayer stress spread performance study device Download PDFInfo
- Publication number
- CN104990811B CN104990811B CN201510404078.4A CN201510404078A CN104990811B CN 104990811 B CN104990811 B CN 104990811B CN 201510404078 A CN201510404078 A CN 201510404078A CN 104990811 B CN104990811 B CN 104990811B
- Authority
- CN
- China
- Prior art keywords
- measuring instrument
- horizontal distortion
- distortion measuring
- shearing
- pressure head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
nullThe invention discloses a kind of composite pavement stress absorption interlayer stress spread performance study device，Including shell，Sample mechanism、Deformation test mechanism and shearing applying mechanism，Sample mechanism includes bed course、Cement concrete layer、Stress absorption interlayer and asphalt overlay，Deformation test mechanism includes vertical deformeter and horizontal distortion measuring instrument，It is two right that horizontal distortion measuring instrument has，One pair of which horizontal distortion measuring instrument is for testing the horizontal distortion of asphalt overlay，Another is used for testing the horizontal distortion of cement concrete layer to horizontal distortion measuring instrument，Vertically deformeter deformation on sample mechanism vertical direction，Shearing applying mechanism includes compression pump、Shearing bar and shearing bar pressure head，Compression pump is fixed on shell，Shearing bar is connected with compression pump，Shearing bar is connected with shearing bar pressure head，Cement concrete layer is provided with reserved crack.This apparatus structure is simple, easy and simple to handle, cheap, it is possible to realize the quantitative assessment of stress absorption interlayer stress spread performance.
Description
Technical field
The present invention relates to road engineering technical field of performance test, being specifically related to a kind of composite pavement stress absorption interlayer should
Power diffusion research device.
Background technology
Asphalt concrete pavement and cement concrete pavement are the main Types of China Higher level highway.Although cement road mask
There have that rigidity is big, good stability, length in service life, fatigue resistance are good, maintenance costs is few and construction is drawn materials more convenient etc. to be excellent
Point, but according to incompletely statistics, in China Higher level road surface, the ratio of cement concrete pavement mileage and total mileage of highway is also
Less than 5%, and all present the trend successively decreased every year.Most cement pavements concentrate on backroad, and change at urban road
Make in engineering, progressively replaced by paracetamol technology.Overlay or newly-built cement-concrete road at Old cement concrete
During the joint treatment of face, new and old crack treatment technology will severely impact the serviceability of road in the future, at existing crack
The technology of controlling includes stress absorption film that full width mats formation, stress absorbing layer, geotextile interlayer, and banded stress is inhaled
Take-up, anti-splitting paster etc., these technology have been applied to entity project, achieve composite pavement prevention crack reflection
Certain effect.The means of existing evaluation crack reflection Prevention Technique mainly have shear fatigue test, bending-tensile fatigue
Tests etc., in terms of the material of traditional material, the performance of counter stress absorption interlayer is diffused, and these means are all difficult to simulate
The vertical adhesion problem of the interlayer contact of composite pavement, seam.Meanwhile, for stress absorption sandwich aspect counter stress
Parameter and the equipment of diffusion evaluation yet there are no correlational study.
For the mechanical characteristic of significantly more efficient analog composite formula road surface stress absorption interlayer, when counter stress absorbs sandwich design
It is provided with Radix Talini Paniculati to examine, therefore is badly in need of a kind of composite pavement stress absorbing layer stress spread performance study equipment of exploitation, to difference
Stress absorption interlayer stress spread performance under structure composition is studied.
Summary of the invention
In order to solve the problem that above-mentioned prior art exists, the invention provides a kind of composite pavement stress absorption interlayer should
Power diffusion research device, this apparatus structure is simple, easy and simple to handle, cheap, it is possible to effectively to simulate, test
The stress spread performance of stress absorption interlayer under overlay combination, it is achieved stress absorption interlayer stress spread performance quantitative
Evaluate.
Realizing the technical scheme that above-mentioned purpose of the present invention used is:
A kind of composite pavement stress absorption interlayer stress spread performance study device, at least includes shell, sample mechanism,
Deformation test mechanism and shearing applying mechanism, shell at least bottom and top, the bottom of shell is base plate, and sample mechanism is whole
Body is rectangular-shaped, and sample mechanism includes bed course, cement concrete layer, stress absorption interlayer and asphalt overlay, bed course
It is laid on the central authorities of shell bottom plate, bed course is laid cement concrete layer, stress absorption interlayer and Colophonium the most successively
Overlay, deformation test mechanism include vertical deformeter, horizontal distortion measuring instrument A, horizontal distortion measuring instrument B,
Horizontal distortion measuring instrument C and horizontal distortion measuring instrument D, horizontal distortion measuring instrument A and horizontal distortion measuring instrument B are symmetrical
Be arranged on the outside of two side of asphalt overlay width, horizontal distortion measuring instrument A and horizontal distortion measuring instrument B
Displacement probe respectively with the central contact of the two side of asphalt overlay width, horizontal distortion measuring instrument C and level
Deformeter D is symmetrically mounted at the outside of the two side of cement concrete layer width, horizontal distortion measuring instrument C
With the displacement probe of horizontal distortion measuring instrument D respectively with the central contact of the two side of cement concrete layer width, cut
Power applying mechanism includes compression pump, shearing bar and shearing bar pressure head, and compression pump is fixed on the central authorities outside cover top portion, cuts
The upper end of power bar is connected through cover top portion with compression pump pressure head, and shearing bar pressure head is the triangular prism in strip, and shearing
The bottom surface of bar pressure head is isosceles triangle, incline that on shearing bar pressure head, drift angle with shearing bar pressure head bottom surface is connected and Colophonium
Overlay contacts, the central authorities of the lower end of shearing bar and the side being connected with base angle, shearing bar pressure head bottom surface two on shearing bar pressure head
Position is fixing to be connected, and the central in the vertical direction of cement concrete layer is provided with reserved crack, reserved crack and shearing bar pressure
The plane of symmetry of the vertical direction of head is on same horizontal plane, and vertical deformeter is fixed in cover top portion, vertically becomes
The displacement probe of shape measuring instrument contacts with the end face of shearing bar pressure head.
Shell also includes four support columns, and the top of shell is platform, and platform is fixed on base plate by four support columns.
Being fixed with two deformeter support bars on base plate, two deformeter support bars are symmetrically disposed on sample mechanism width
The outside of degree two side, direction, horizontal distortion measuring instrument A and horizontal distortion measuring instrument C is fixed therein a deformation and surveys
On amount instrument support bar, horizontal distortion measuring instrument B and horizontal distortion measuring instrument D is fixed on another deformeter and supports
On bar.
Compared with prior art, its beneficial effect and advantage are the present invention:
1, this device is shearing resistance, the tensile property test carried out based on pressure transmission, evaluates stress absorption by test result
The interlayer tension of interlayer and shear behavior.
2, this device can carry out cracking resistance evaluation to the composite pavement of different structure combination, directly instructs combined type
Design and construction at pavement crack.
3, this device is under simulation test load action, the asphalt overlay on test compound formula road surface, cement concrete layer
Level, vertical displacement gap, by the horizontally and vertically deformation of sample of test different structure combination, can be indirect
Ground counter stress absorbs interlayer fatigue behaviour and is evaluated.
Accompanying drawing explanation
The structural representation of the composite pavement stress absorption interlayer stress spread performance study device that Fig. 1 provides for the present invention
Figure.
Fig. 2 is the left view of Fig. 1.
Wherein, 1-base plate, 2-support column, 3-platform, 4-bed course, 5-cement concrete layer, 6-stress absorption interlayer,
7-asphalt overlay, 8-deformeter support bar, the 9-horizontal distortion vertical deformeter of measuring instrument A, 10-, 11-
Compression pump, 12-shearing bar, 13-shell, 14-decompression lever pressure head, 15-reserve crack, 16-horizontal distortion measuring instrument B,
17-horizontal distortion measuring instrument C, 18-horizontal distortion measuring instrument D.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is specifically described.
Structure such as Fig. 1 and Fig. 2 of the composite pavement stress absorption interlayer stress spread performance study device that the present invention provides
Shown in, this device at least includes shell 13, sample mechanism, deformation test mechanism and shearing applying mechanism.Shell includes the end
Plate 1, platform 3 and four support columns 2, platform 3 is fixed on base plate 1 by four support columns 2, four support columns 2
Lower end be separately fixed on base plate, upper end is separately fixed on platform.
Sample mechanism is overall in rectangular-shaped, and sample mechanism includes bed course 4, cement concrete layer 5, stress absorption interlayer 6
With asphalt overlay 7, bed course 4 is laid on the central authorities of the base plate 1 of shell 13, and bed course 4 is laid water the most successively
Cement concrete layer 5, stress absorption interlayer 6 and asphalt overlay 7.
Shearing applying mechanism includes compression pump 11, shearing bar 12 and shearing bar pressure head 14, and compression pump 11 is fixed on platform 3
The central authorities of upper surface, the upper end of shearing bar 12 is connected through platform 3 with compression pump pressure head.Shearing bar pressure head 14 is in length
The triangular prism of strip, and the bottom surface of shearing bar pressure head is isosceles triangle, on shearing bar pressure head 14 with shearing bar pressure head at the bottom of
The incline that the drift angle in face is connected contacts with asphalt overlay, with shearing bar pressure on the lower end of shearing bar 12 and shearing bar pressure head
Head base angle, bottom surface two be connected side central part connect, and on shearing bar pressure head 14 with the shearing bar pressure head end, bottom surface two
The side horizontal that angle is connected is placed.
Deformation test mechanism includes vertical deformeter, horizontal distortion measuring instrument A9, horizontal distortion measuring instrument B16, water
Flat deformeter C17 and horizontal distortion measuring instrument D18.Horizontal distortion measuring instrument A9 and horizontal distortion measuring instrument B16
It is symmetrically mounted at the outside of the two side of asphalt overlay width, horizontal distortion measuring instrument A9 and horizontal distortion to survey
The displacement probe of amount instrument B16 respectively with the central contact of the two side of asphalt overlay width, horizontal distortion measuring instrument
C17 and horizontal distortion measuring instrument D18 is symmetrically mounted at the outside of the two side of cement concrete layer width, level
The displacement probe of deformeter C and horizontal distortion measuring instrument D respectively with the two side of cement concrete layer width
Central contact.In the present embodiment, horizontal distortion measuring instrument A, horizontal distortion measuring instrument B, horizontal distortion measuring instrument C
As follows with the mounting means of horizontal distortion measuring instrument D: fixedly mounting two deformeter support bars 8 on base plate, two become
Shape measuring instrument support bar 8 is symmetrically disposed on the both sides of sample mechanism width two side, horizontal distortion measuring instrument A and
Horizontal distortion measuring instrument C is fixed therein on a deformeter support bar, and horizontal distortion measuring instrument B and level become
Shape measuring instrument D is fixed on another deformeter support bar.In the present embodiment, horizontal distortion measuring instrument is by becoming
Shape measuring instrument they sup-port is installed, it would however also be possible to employ other some are fixed and mounting means.Vertically deformeter
Being fixed in cover top portion, the displacement probe of vertical deformeter contacts with the end face of shearing bar pressure head.
The central in the vertical direction of cement concrete layer is provided with reserved crack 15, and reserved crack 15 is erected with shearing bar pressure head
Nogata to the plane of symmetry on same horizontal plane.
The making and use method of the composite pavement stress absorption interlayer stress spread performance study device that the present invention provides is such as
Under:
1) first making cement concrete layer, offers reserved crack at cement concrete layer, then according to the thickness paving of design
Build stress absorption interlayer, it is ensured that the material of stress absorption interlayer is filled up completely with in the reserved crack of cement concrete slab, overlay
Flexible asphalt overlay, roller-compaction, it is cooled to room temperature, sample mechanism body making completes.
2) by base plate, support column and platform according to design requirement install, shell completes, then install compression pump,
Shearing bar and shearing bar pressure head, then on base plate, lay bed course, sample mechanism body is placed on bed course, regulates shearing
Bar, makes shearing bar pressure head contact asphalt overlay.
3) first two deformeter support bars are arranged on base plate, then 4 horizontal distortion measuring instruments are fixed on sample
The outside of mechanism's width two side, more vertical deformeter is installed.
4) open compression pump, sample mechanism is pressurizeed, recording level deformeter and vertically deform survey in pressure process
The changing value of amount instrument, thus evaluate interlayer tension and the shear behavior of stress absorption interlayer.
Claims (3)
1. a composite pavement stress absorption interlayer stress spread performance study device, it is characterised in that: outside at least including
Shell, sample mechanism, deformation test mechanism and shearing applying mechanism, shell at least includes bottom and top, the bottom of shell
For base plate, sample mechanism is overall in rectangular-shaped, and sample mechanism includes bed course, cement concrete layer, stress absorption interlayer
And asphalt overlay, setting cushion, in the central authorities of base plate, bed course is laid cement concrete layer, stress the most successively
Absorbing interlayer and asphalt overlay, deformation test mechanism includes vertical deformeter, horizontal distortion measuring instrument A, level
Deformeter B, horizontal distortion measuring instrument C and horizontal distortion measuring instrument D, horizontal distortion measuring instrument A and horizontal distortion
Measuring instrument B is symmetrically mounted at the outside of the two side of asphalt overlay width, horizontal distortion measuring instrument A and level
The displacement probe of deformeter B respectively with the central contact of the two side of asphalt overlay width, horizontal distortion is surveyed
Amount instrument C and horizontal distortion measuring instrument D is symmetrically mounted at the outside of the two side of cement concrete layer width, level
The displacement probe of deformeter C and horizontal distortion measuring instrument D respectively with the two side of cement concrete layer width
Central contact, shearing applying mechanism includes compression pump, shearing bar and shearing bar pressure head, and compression pump is fixed on outside cover top portion
The central authorities of side, the upper end of shearing bar is connected through cover top portion with compression pump pressure head, and shearing bar pressure head is three in strip
Prism, and the bottom surface of shearing bar pressure head is isosceles triangle, on shearing bar pressure head, the drift angle with shearing bar pressure head bottom surface is connected
Incline contact with asphalt overlay, the lower end of shearing bar is connected with base angle, shearing bar pressure head bottom surface two with on shearing bar pressure head
The central part of side fixing connect, the central in the vertical direction of cement concrete layer is provided with reserved crack, reserved splits
The plane of symmetry of the vertical direction of seam and shearing bar pressure head is on same horizontal plane, and vertical deformeter is fixed on outer roof
In portion, the displacement probe of vertical deformeter contacts with the end face of shearing bar pressure head.
Composite pavement stress absorption interlayer stress spread performance study device the most according to claim 1, its feature
Being: shell also includes four support columns, the top of shell is platform, and platform is fixed on base plate by four support columns.
Composite pavement stress absorption interlayer stress spread performance study device the most according to claim 1, its feature
Being: be fixed with two deformeter support bars on base plate, two deformeter support bars are symmetrically disposed on sample mechanism
The outside of width two side, horizontal distortion measuring instrument A and horizontal distortion measuring instrument C are fixed therein a deformation and survey
On amount instrument support bar, horizontal distortion measuring instrument B and horizontal distortion measuring instrument D is fixed on another deformeter support bar
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510404078.4A CN104990811B (en) | 2015-07-10 | 2015-07-10 | A kind of composite pavement stress absorption interlayer stress spread performance study device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510404078.4A CN104990811B (en) | 2015-07-10 | 2015-07-10 | A kind of composite pavement stress absorption interlayer stress spread performance study device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104990811A CN104990811A (en) | 2015-10-21 |
| CN104990811B true CN104990811B (en) | 2016-09-21 |
Family
ID=54302652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510404078.4A Active CN104990811B (en) | 2015-07-10 | 2015-07-10 | A kind of composite pavement stress absorption interlayer stress spread performance study device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104990811B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769411B (en) * | 2016-12-23 | 2023-08-01 | 同济大学 | Interlayer shear test device for pavement structure |
| CN106644727B (en) * | 2017-02-22 | 2023-07-21 | 长沙理工大学 | Device and method for testing rebound modulus of asphalt layer of rigid-flexible composite test piece |
| CN107014346B (en) * | 2017-05-31 | 2023-02-21 | 济南大学 | Device suitable for deformation after cement solidifies is tested |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3829276B2 (en) * | 2001-10-23 | 2006-10-04 | 太平洋セメント株式会社 | How to determine when the traffic is open |
| CN101178340A (en) * | 2007-11-21 | 2008-05-14 | 长安大学 | Asphalt pavement reflection crack propagation analog experiment device |
| CN102507340A (en) * | 2011-10-21 | 2012-06-20 | 同济大学 | Interlaminar shear strength parameter determination method of combined type pavement system |
| CN104713792A (en) * | 2015-03-27 | 2015-06-17 | 山西省交通科学研究院 | Dynamic research equipment for anti-shear performance of asphalt concrete surface layer structure |
| CN204882264U (en) * | 2015-07-10 | 2015-12-16 | 山西省交通科学研究院 | Combined type road surface stress absorption intermediate layer stress dispersion performance research device |
-
2015
- 2015-07-10 CN CN201510404078.4A patent/CN104990811B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3829276B2 (en) * | 2001-10-23 | 2006-10-04 | 太平洋セメント株式会社 | How to determine when the traffic is open |
| CN101178340A (en) * | 2007-11-21 | 2008-05-14 | 长安大学 | Asphalt pavement reflection crack propagation analog experiment device |
| CN102507340A (en) * | 2011-10-21 | 2012-06-20 | 同济大学 | Interlaminar shear strength parameter determination method of combined type pavement system |
| CN104713792A (en) * | 2015-03-27 | 2015-06-17 | 山西省交通科学研究院 | Dynamic research equipment for anti-shear performance of asphalt concrete surface layer structure |
| CN204882264U (en) * | 2015-07-10 | 2015-12-16 | 山西省交通科学研究院 | Combined type road surface stress absorption intermediate layer stress dispersion performance research device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104990811A (en) | 2015-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Collop et al. | Shear bond strength between asphalt layers for laboratory prepared samples and field cores | |
| Zornberg | Advances in the use of geosynthetics in pavement design | |
| CN104990811B (en) | A kind of composite pavement stress absorption interlayer stress spread performance study device | |
| Ogundipe et al. | Investigation of crack resistance potential of stress absorbing membrane interlayers (SAMIs) under traffic loading | |
| CN104458398B (en) | Semi-rigid base asphalt pavement reflection crack testing device | |
| CN204882264U (en) | Combined type road surface stress absorption intermediate layer stress dispersion performance research device | |
| Moreno-Navarro et al. | Structural analysis of polymer modified bituminous materials in the rehabilitation of light-medium traffic volume roads | |
| Harvey et al. | Initial CAL/APT Program: Site Information, Test Pavement Construction, Pavement Materials Characterizations, Initial CAL/APT Test Results, and Performance Estimates | |
| CN104215365B (en) | Pavement structure layer internal shearing stress testing sensor and embedding technology and application thereof | |
| Thakur | Geocell-reinforced unpaved and paved roads with recycled asphalt pavement (RAP) bases: Experimental study and damage model development | |
| Li et al. | Performance of paving fabric reinforced asphalt mixture | |
| Joel Sprague et al. | Tensile properties of asphalt overlay geosynthetic reinforcement | |
| Knapton et al. | UK research into concrete block pavement design | |
| Tarefder et al. | Measuring fatigue damages from an instrumented pavement section due to day-night and yearly temperature rise and fall in desert land of the west | |
| Sargand et al. | Implementation and thickness optimization of perpetual pavements in Ohio. | |
| Niederquell et al. | Rubblization of concrete pavements: Field investigation | |
| Palacios et al. | Evaluation of fiber reinforced bituminous interlayers for pavement preservation | |
| Gopalakrishnan et al. | Assessing damage to airport pavement structure due to complex gear loads | |
| Lee et al. | Evaluation of optimum rubblized depth to prevent reflection cracks | |
| Groenendijk et al. | Rutting development in linear tracking test pavements to evaluate Shell subgrade strain criterion | |
| Zelelew et al. | Forensic evaluation of the LTPP specific pavement study projects in Arizona | |
| Sebaaly et al. | Development of a joint density specification: Phase I-literature review and test plan | |
| Li et al. | Performance of TenCate Mirafi PGM-G4 interlayer-reinforced asphalt pavements in Alaska | |
| Perez et al. | Accelerated pavement cracking testing: Experimental and finite element analysis | |
| Ponniah et al. | Ontario’s experience in the construction of perpetual pavement trials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Zhisheng Inventor after: Wu Lijun Inventor after: Zhang Li Inventor after: Ge Zihong Inventor after: Zhu Hongquan Inventor after: Bian Rui Inventor after: Wang Ruili Inventor after: Zhang Zongzhan Inventor after: Cheng Fei Inventor after: Peng Zhenyu Inventor before: Liu Zhisheng Inventor before: Zhang Li Inventor before: Ge Zihong Inventor before: Zhu Hongquan Inventor before: Bian Rui |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170512 Address after: 030006 Taiyuan, Xiaodian District, Shanxi city street, No. 79 Patentee after: Shanxi Jiaoke Highway Prospecting Design Institute Address before: 030006 Taiyuan, Xiaodian District, Shanxi city street, No. 79 Co-patentee before: Shanxi Jiaoke Highway Prospecting Design Institute Patentee before: Shanxi Province Transport Science Research Institute |