CN203101195U - Multifunctional shear apparatus for bituminous pavement - Google Patents
Multifunctional shear apparatus for bituminous pavement Download PDFInfo
- Publication number
- CN203101195U CN203101195U CN 201320117502 CN201320117502U CN203101195U CN 203101195 U CN203101195 U CN 203101195U CN 201320117502 CN201320117502 CN 201320117502 CN 201320117502 U CN201320117502 U CN 201320117502U CN 203101195 U CN203101195 U CN 203101195U
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- steel plate
- die trial
- bituminous pavement
- plate base
- shear
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Abstract
The utility model discloses a multifunctional shear apparatus for a bituminous pavement. The apparatus comprises a steel plate base, a refrigerating system, an environment box, a shear test mould, an electric heating tube, a traction bar and a counter-face frame. The refrigerating system, the environment box, the traction bar and the counter-face frame are arranged on the steel plate base. The shear test mould and the electric heating tube are arranged in the environment box. The shear test mould is divided into two parts: upper and lower parts. The lower part is slidingly arranged on the steel plate base and is connected with the traction bar through a lead screw. The upper part is fixedly connected with the steel plate base outside the environment box through the lead screw. The refrigerating system is communicated with the environment box. According to the apparatus provided by the utility model, the indoor shear test result can accurately reflect shear resistance among the bituminous pavements and the material of the bituminous pavements.
Description
Technical field
The utility model relates to the pavement detection Instrument technology field, the multi-functional boxshear apparatus of especially a kind of bituminous pavement.
Background technology
In highway engineering, existing bituminous pavement shear behavior method of testing is not all considered temperature and the load coupling influence to material shear behavior index test result.In fact, bituminous pavement is among different temperatures and the load compound action always, existing shop experiment fails to consider temperature and load acting in conjunction, simultaneously, the sample dimensions size also produces certain influence with pressurization the different of angle to test result, above factor causes shop experiment to disconnect mutually with actual conditions, causes test result can not accurately reflect the actual shear behavior of bituminous pavement.Therefore, existing shop experiment can't the accurate instruction engineering construction, makes bituminous pavement be prone to breakoff phenomenons such as early stage passing.
The utility model content
The utility model is at the deficiencies in the prior art, the multi-functional boxshear apparatus of a kind of bituminous pavement is proposed, can real simulation bituminous pavement physical environment of living in, the shear test instrument of coupling temperature and two kinds of external factor of load, scantling and two kinds of internal factors of pressurization angle carries out the shear behavior evaluation of indexes by shear test to bituminous pavement interlayer and material self.
In order to realize above-mentioned utility model purpose, the utility model provides following technical scheme: the multi-functional boxshear apparatus of a kind of bituminous pavement, include steel plate base, refrigeration system, environmental cabinet, shearing die trial, electric heating tube, distance rod and reaction frame, this refrigeration system, environmental cabinet, distance rod and reaction frame all are located on the steel plate base; This shearing die trial and electric heating tube are located in the environmental cabinet; Shear die trial and be divided into two parts: top and lower part, lower part are located on the steel plate base slidably, are connected with distance rod through screw mandrel; Fixedly connected with the steel plate base outside the environmental cabinet through screw mandrel in top; This refrigeration system is communicated with environmental cabinet.
Further, also include display device, this display device is connected with sensor on the distance rod by data line.
Further, also include lifting jack, this lifting jack is located at reaction frame and shears between the die trial top.
Further, between shearing die trial top and lifting jack, be provided with press rods.
Further, this steel plate base is provided with two parallel grooves, shears bottom, die trial lower part and is provided with corresponding rolling steel balls.Environmental cabinet is fixed on the steel plate base, use the rectangular iron block of rectangle fixedly to go out two parallel orbits in the environmental cabinet bottom, respectively place several steel balls in the track, steel ball size less than track width greater than orbit altitude, above two tracks, place the smooth flat iron plate that area is suitable, be placed with the shearing die trial on it, so, when shear test, shearing the die trial lower part can move freely together and cut off the test test specimen with smooth flat iron plate.
Compared with prior art, the utlity model has following advantage: the test specimen at the various sizes type adopts different different size and the angles of shearing die trial coupling, finish shear test under the state of the factors such as temperature, load, scantling and pressurization angle that in environmental cabinet, are coupled, can simulate the actual user mode of bituminous pavement truly, improve the deficiency of present shop experiment test, make indoor shear test result can reflect the shear behavior of bituminous pavement interlayer and material self exactly, be used to instruct engineering construction.
The multi-functional boxshear apparatus of the utility model bituminous pavement adopts special pressure-loaded mode and dissimilar shearing die trials, when carrying out bituminous pavement shear behavior index test, tested test specimen is put into the corresponding shearing of environmental cabinet die trial, can test out bituminous pavement in temperature by the shear test method of testing, shear behavior under the load coupling, because this design has taken into full account the environment for use of bituminous pavement, simulate boundary condition truly, made indoor shear test result can accurately reflect the shear behavior of bituminous pavement interlayer and material self.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is for shearing the sectional view of die trial.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection domain of the present utility model.
The multi-functional boxshear apparatus of a kind of bituminous pavement as shown in Figure 1 comprises with the lower part: steel plate base 8, belt sprocket wheel 5, display device 1, environmental cabinet 9, electric heating tube 17, distance rod 22, reaction frame 12, lifting jack 11, shearing die trial 25, refrigeration system 31.
Belt sprocket wheel 5, environmental cabinet 9, refrigeration system 31 are set on steel plate base 8; Shearing die trial 25 is set in the bottom of environmental cabinet 9, and the side is provided with electric heating tube 17, and the casing top is provided with reaction frame 12 and lifting jack 11; Belt sprocket wheel 5 is connected with shearing die trial 25 in the environmental cabinet 9 by distance rod 22, is placed with display device 1 above belt sprocket wheel 5 outer case; Refrigeration system 31 and environmental cabinet 9 are connected by pipeline.The structure of wherein shearing die trial 25 comprises top 252, lower part 253, and is located at cushion block 251 wherein as shown in Figure 2.
The multi-functional boxshear apparatus major function of bituminous pavement is by belt sprocket wheel 5, environmental cabinet 9, lifting jack 11, shear die trial 25, refrigeration system 31 5 parts are formed, test specimen at the various sizes type adopts different size and the angles of different shearing die trials 25 couplings, temperature is coupled in environmental cabinet 9, load, finish shear test under the state of factors such as scantling and pressurization angle, can simulate the actual user mode of bituminous pavement truly, improve the deficiency of present shop experiment test, make indoor shear test result can reflect the shear behavior of bituminous pavement interlayer and material self exactly, be used to instruct engineering construction.
Operating process:
1, the shearing die trial 25 that matches according to the selection of test sample dimensions size, should shear die trial 25 and put into environmental cabinet 9, shearing die trial 25 bottoms joins by connecting screw mandrel 24 and distance rod 22 levels, top flatly is fixed on the fixation steel plate 23 by connection screw mandrel 24, clamp nut 14, keep shearing center, die trial 25 upper and lower part on a vertical curve, also will make the test specimen shear surface be in the horizontal clearance face of shearing die trial 25 upper and lower parts simultaneously.After test specimen is put into the band opening shearing die trial 25, in order to reduce test error, the nut of tightening opening part makes test specimen as far as possible little with the gap between the shearing die trial 25.Vertical pressure can vertically put on the test specimen by lifting jack on the reaction frame 12 11 and the press rods 10 that is placed on test specimen top.After installing, must shut by test specimen the safety door of environmental cabinet 9, and the one, for insulation effect; The 2nd, for safety effect.Observing shear history can be by the organic plastics transparent window on the safety door.
2, each sensor line on display device 1 and the display panel 13 is connected successively put in place, open power supply, by the parameter button on the display device 1 the correlation test parameter is set, for example: test specimen numbering, shear rate, stop condition etc., temperature level is provided with in temperature window 3, electric heating tube 17 is used for hot test, and refrigeration system 31 is used for low-temperature test, can reach corresponding temperature by working independently of electric heating tube 17 and refrigeration system 31.If necessary can be earlier the internal storage of display device 1 be carried out " making zero " and handle,, show in the window 2 to be shown that " Press Start to Run " back represents that instrument is ready then by " determining " key.
3, treat that parameters reaches test request after, can carry out shear test, press the "start" button on the display device 1, at this moment, distance rod 22 has one section idle path, shows on the screen " Search Strength ", after distance rod 22 detects stress point, promptly begin automatic shearing.Force transducer 21 is installed on distance rod 22 can measures the thrust size, can measure the displacement size by the displacement transducer on the belt sprocket wheel 5, thrust and displacement directly show in display window 2 in real time.In the shear test block process, when 80% or the displacement that the power value for the treatment of drops to the maximum, force value reached 30mm, shearing can stop automatically, by " determining " key distance rod 22 was resetted after the record data.At this moment, can also further preserve the test figure of front, clean out environmental cabinet 9 then and prepare to carry out next shear test by the corresponding software on the PC.
Basic function:
1, environmental cabinet size: 400mm * 370mm * 500mm.
2, environmental cabinet temperature: temperature level scope-30 ℃ ~ 70 ℃, its precision is ± 1.0 ℃.
3, horizontal thrust: horizontal thrust magnitude range 0 ~ 50KN, its precision is ± 0.01KN.
4, horizontal shift: horizontal shift magnitude range 0 ~ 30mm, its precision is ± 0.1mm.
5, pressure at right angle: pressure at right angle magnitude range 0 ~ 90KN, its precision is ± 0.1KN.
6, shear rate: shear rate magnitude range 1 ~ 50mm/min, its precision is ± 1.0mm/min.
7, shear die trial: based on the size of Marshall shaping test piece in the highway engineering, designed and developed following several classes and sheared die trial, by shearing the different four big classes that are divided into the angle between the vertical curve of die trial axis, detailed dimensions such as following table are listed.
Shear the die trial size table:
8, with display device by data line with after PC is connected, also can gather power value and the shift value of each moment automatically and calculate automatically and show and shear peak-peak, printing reports and curve.
Claims (5)
1. multi-functional boxshear apparatus of bituminous pavement, it is characterized in that: include steel plate base, refrigeration system, environmental cabinet, shearing die trial, electric heating tube, distance rod and reaction frame, this refrigeration system, environmental cabinet, distance rod and reaction frame all are located on the steel plate base; This shearing die trial and electric heating tube are located in the environmental cabinet; Shear die trial and be divided into two parts: top and lower part, lower part are located on the steel plate base slidably, are connected with distance rod through screw mandrel; Fixedly connected with the steel plate base outside the environmental cabinet through screw mandrel in top; This refrigeration system is communicated with environmental cabinet.
2. the multi-functional boxshear apparatus of bituminous pavement according to claim 1 is characterized in that: also include display device, this display device is connected with sensor on the distance rod by data line.
3. the multi-functional boxshear apparatus of bituminous pavement according to claim 1, it is characterized in that: also include lifting jack, this lifting jack is located at reaction frame and shears between the die trial top.
4. as the multi-functional boxshear apparatus of bituminous pavement as described in the claim 3, it is characterized in that: be provided with press rods shearing between die trial top and the lifting jack.
5. the multi-functional boxshear apparatus of bituminous pavement according to claim 1, it is characterized in that: this steel plate base is provided with two parallel grooves, shears bottom, die trial lower part and is provided with corresponding rolling steel balls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320117502 CN203101195U (en) | 2013-03-13 | 2013-03-13 | Multifunctional shear apparatus for bituminous pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320117502 CN203101195U (en) | 2013-03-13 | 2013-03-13 | Multifunctional shear apparatus for bituminous pavement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203101195U true CN203101195U (en) | 2013-07-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320117502 Expired - Fee Related CN203101195U (en) | 2013-03-13 | 2013-03-13 | Multifunctional shear apparatus for bituminous pavement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203101195U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175743A (en) * | 2013-03-13 | 2013-06-26 | 张金荣 | Multifunctional shear apparatus for asphalt pavement |
| CN103969131A (en) * | 2014-04-18 | 2014-08-06 | 辽宁省水利水电科学研究院 | Coarse-grained soil hydraulic shearing instrument |
| CN113984546A (en) * | 2021-09-28 | 2022-01-28 | 北京建筑大学 | Testing machine and testing method for measuring road interlayer shear strength |
-
2013
- 2013-03-13 CN CN 201320117502 patent/CN203101195U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175743A (en) * | 2013-03-13 | 2013-06-26 | 张金荣 | Multifunctional shear apparatus for asphalt pavement |
| CN103969131A (en) * | 2014-04-18 | 2014-08-06 | 辽宁省水利水电科学研究院 | Coarse-grained soil hydraulic shearing instrument |
| CN103969131B (en) * | 2014-04-18 | 2016-01-20 | 辽宁省水利水电科学研究院 | Coarse-grained soil hydraulic cutter instrument |
| CN113984546A (en) * | 2021-09-28 | 2022-01-28 | 北京建筑大学 | Testing machine and testing method for measuring road interlayer shear strength |
| CN113984546B (en) * | 2021-09-28 | 2023-08-22 | 北京建筑大学 | Testing machine and testing method for measuring road interlayer shear strength |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20170313 |
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| CF01 | Termination of patent right due to non-payment of annual fee |