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Accelerated loading test device for small full-size asphalt pavement

An asphalt pavement and accelerated loading technology, which is applied in the direction of applying repeated force/pulsation force to test the strength of materials, can solve the problems of huge size, complicated operation process, and inability to accurately simulate the actual stress state of asphalt pavement, and achieve good economy The effect of sex and low cost

Active Publication Date: 2012-07-25
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 provide a small full-sized asphalt pavement accelerated loading test device, aiming at the fact that the existing indoor rutting test cannot accurately simulate the actual stress state of the asphalt pavement and the outdoor full-sized pavement accelerated loading test equipment has a huge size and a long test period , Expensive test costs, complicated operation process, etc.

Method used

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  • Accelerated loading test device for small full-size asphalt pavement
  • Accelerated loading test device for small full-size asphalt pavement
  • Accelerated loading test device for small full-size asphalt pavement

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specific Embodiment approach 1

[0017] Specific implementation mode one: combine Figure 1-Figure 8 Explain, the small-sized asphalt pavement accelerated loading test device of this embodiment includes a base 1, a console 2, a frame 24, a rolling steel wheel 7, a rectangular frame steel wheel loading beam 8, and a loading wheel set 9 , rectangular frame wheel group loading beam 10, two groups of inner oil pressure pumps 3, two groups of outer oil pressure pumps 4, two annular horizontal transmission chains 11, two transmission cross bars 12, eight annular vertical transmission chains 13, eight A driven gear 14, twelve power transmission gears 15, eight driving gears 16, two loading wheel drive gears 17, two rolling steel wheel drive gears 18, two bidirectional motors 20, four drive rods 21 , four transition sprockets 25 and four lifting guide rails 26, eight annular vertical transmission chains 13 include four annular vertical inner transmission chains 22 and four annular vertical outer transmission chains 2...

specific Embodiment approach 2

[0020] Specific implementation mode two: combination figure 1 To illustrate, the height of the baffle plate 24-3 in this embodiment is 5cm, 6cm, 7cm, 10cm or 12cm. It can be flexibly adjusted according to user-designed pavement structural layer thickness and test requirements. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0021] Specific implementation mode three: combination figure 1 , Figure 3 ~ Figure 6 Explain that each group of internal hydraulic pumps 3 in this embodiment includes two internal hydraulic pumps, and among the four supporting legs 24-2, a The hydraulic pump 3 in the group and the rectangular steel wheel loading beam 8 are driven to move up and down by the plunger of the hydraulic pump 3 in the two groups, and the pump body of the hydraulic pump 3 in the two groups is fixed in the base 1 . The purpose of designing like this is to make the rectangular steel wheel loading beam 8 move up and down steadily. Others are the same as in the first or second embodiment.

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Abstract

An accelerated loading test device for a small full-size asphalt pavement relates to an accelerated loading test device for a full-size asphalt pavement, aiming at the problems of impossibility of accurately simulating the actual stress state of an asphalt pavement in an indoor wheel tracking test, as well as large equipment size, long test period, high test expense and complex operation process in an outdoor full-size pavement accelerated loading test. A two-way motor drives a drive big gear and a driven big gear to rotate; a transmission cross rod disposed on a rack is fixedly sleeved with a force-transferring pinion, as well as sleeved with a force-transferring big gear, a lifting gear and a transition chain wheel engaged with an annular horizontal transmission chain in a suspension manner; the force-transferring big gear and the force-transferring pinion are engaged with an annular vertical inner transmission chain and an annular vertical outer transmission chain; the lifting gear is engaged with a lifting guide rail; the movements of a rolling steel wheel and a loading wheel group are driven via the annular horizontal transmission chain; the up-and-down movement of a rectangular-frame steel wheel loading beam is driven via an inner oil pressure pump; and the up-and-down movement of a rectangular-frame wheel group loading beam is driven via an outer oil pressure pump. The invention is used for the accelerated loading test for the full-size asphalt pavement.

Description

technical field [0001] The invention relates to a full-size asphalt pavement loading test device, which belongs to the field of test equipment. Background technique [0002] Indoor rutting test, as one of the standard tests stipulated in my country's "Code for Design of Highway Asphalt Pavement", has been widely used in road design and evaluation. However, long-term observations by researchers have found that asphalt mixture pavement whose dynamic stability index meets the requirements of the specification will still experience varying degrees of rutting damage in the initial stage of operation, which also shows that the conclusion of the standard rutting test is inconsistent with the high temperature resistance of the actual asphalt pavement. There are still some differences in the deformation capacity, and the existing indoor rutting tests cannot accurately simulate the actual stress conditions of the actual pavement and the actual response of the pavement under load. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/36
Inventor 董泽蛟李生龙刘美丽龚湘兵
Owner HARBIN INST OF TECH
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