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Track testing apparatus of indoor small-size annular asphalt pavement structure

A technology of asphalt pavement and rutting test, which is applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of long manufacturing and service cycle, limited loading conditions, complicated operation, etc., and achieves short service cycle and simple structure. , the effect of simple operation

Inactive Publication Date: 2011-05-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to combine the advantages of the outdoor foot size acceleration loading device (which can better simulate the actual vehicle load effect and can study the mechanical behavior of the asphalt surface layer structure) and the indoor linear rutting instrument (controllable temperature and humidity conditions) to provide a An indoor small-scale annular asphalt pavement structure rutting test device to solve the problems of existing pavement accelerated loading equipment with large size, long manufacturing and service periods, high cost, complicated operation, and limitations of indoor small-scale test loading conditions

Method used

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  • Track testing apparatus of indoor small-size annular asphalt pavement structure
  • Track testing apparatus of indoor small-size annular asphalt pavement structure
  • Track testing apparatus of indoor small-size annular asphalt pavement structure

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine Figure 1-Figure 10 Illustrate this embodiment, the small-sized annular asphalt pavement structure loading test device of this embodiment is made up of test ring tank body 1, power unit 2, load application device, depth adjustment device 4 and measuring device; Said test ring tank body 1 is made up of The inner sleeve 6, the outer sleeve 7 and the annular bottom plate 8 are composed, the power device 2 is composed of a motor 9 and a rotary joint 10, and the load applying device includes two test vehicles 11 and two connecting frames 12. The measurement The device is composed of two displacement gauges 14; the outer sleeve 7 is set on the inner sleeve 6, and the annular bottom plate 8 is arranged in the annular cavity between the outer sleeve 7 and the inner sleeve 6, and the annular bottom plate 8 and the inner sleeve The bottom end faces of the sleeve 6 and the outer sleeve 7 are affixed, and the area surrounded by the annular ...

specific Embodiment approach 2

[0009] Specific implementation mode two: combination Figure 8-Figure 10 Describe this embodiment, the depth adjustment device 4 of this embodiment is made up of at least two roller sets and wheel frame 19; Each roller set is made up of two rollers 20 and an axle 21, and described two rollers 20 are contained in axle 21 and is rotatably connected to the wheel shaft 21 through bearings. At least two roller groups are arranged in parallel from top to bottom. Each roller 20 is rollingly matched with the inner wall of the guide chute 18. The wheel shaft 21 is fixedly connected to the wheel frame 19. Each connecting frame The other end of 12 is affixed with wheel frame 19. So arranged, when the wheel 23 and the test asphalt mixture road produce rutting, the wheel 23 can sink, and the connecting frame 12 is kept horizontal all the time by the roller 20 rolling up and down in the guide chute 18 . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0010] Specific implementation mode three: combination Figure 9 Describe this embodiment: the number of roller sets in this embodiment is three. With such a setting, the overall stability is good. Others are the same as in the second embodiment.

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Abstract

A track testing apparatus of an indoor small-size annular asphalt pavement structure relates to a loading testing apparatus of an annular pavement structure and aims at problems that the existing pavement acceleration loading device has big size, long manufacturing and using period, high cost and complex operation. The track testing apparatus is characterized in that an inner sleeve and an outer sleeve are sheathed together; an annular bottom plate is arranged between the inner sleeve and the outer sleeve and fixedly connected with the bottom end surfaces of the inner sleeve and the outer sleeve; the annular bottom plate and an area enclosed between the inner sleeve and the outer sleeve form a circular groove; an electric motor is arranged in the inner cavity of the inner sleeve; an output shaft of the electric motor is connected with a rotating joint in a transmission way; a guiding chute of the rotating joint is internally provided with a depth adjusting device which is connected with the guiding chute in a rolling way; two test cars are arranged in the circular groove; one end of a connecting framework is fixedly connected with the test cars and the other end is fixedly connected with the depth adjusting device; and two displacement meters are arranged in the circular groove. The track testing apparatus has the advantages of small size, simple structure, low cost and simpleoperation, and is applicable to the loading test on various asphalt concrete pavement.

Description

technical field [0001] The invention relates to an annular asphalt mixture rutting test device. Background technique [0002] The early failure of high-grade highways, especially the rutting problem, has drawn more and more attention from people. In order to solve this problem and improve the service life and service level of pavement, it is necessary to carry out the high temperature stability evaluation of asphalt pavement materials. [0003] At present, the test devices that can be used to evaluate the anti-rutting performance of asphalt pavement materials and are similar to the actual loading methods of the pavement include: outdoor foot-sized accelerated loading equipment and indoor linear rutting instrument. Among them, the outdoor foot size accelerated loading test equipment can more realistically simulate the vehicle action on the actual road surface, making it an ideal means for long-term performance evaluation of the road surface. Up to now, the accelerated loadi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/18
Inventor 董泽蛟孙宗杰纪伦谭忆秋程小亮
Owner HARBIN INST OF TECH
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