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W-shaped rutting bump height measuring system

A kind of rutting and die-testing technology, applied in the direction of measuring devices, instruments, material inspection products, etc., can solve the problems of inconsistent thickness, not considering the depth of rutting, unable to obtain anti-rutting performance, etc., and achieve the effect of accurate dynamic stability.

Inactive Publication Date: 2013-11-27
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are several deficiencies in the anti-rutting performance of the load wheel tester at the micro-surface: ① The size of the specimen used in the test is fixed, and the actual road rut depth is not considered; ② The specimen is rectangular, while the actual road rut is W-shaped , the thickness of the slurry mixture is inconsistent; ③The specimen is in the rigid support boundary condition during the test, but the micro-surface mixture is actually on the asphalt mixture, and the asphalt mixture is a flexible material; ④This test cannot distinguish the original asphalt pavement Whether the rutting is stable; ⑤ Unable to obtain the overall anti-rutting performance of the micro-surface and the actual pavement structure, and the formation process of the secondary rutting at the micro-surface

Method used

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  • W-shaped rutting bump height measuring system
  • W-shaped rutting bump height measuring system
  • W-shaped rutting bump height measuring system

Examples

Experimental program
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Effect test

Embodiment 1

[0025] see Figure 1-3 , W-type rut testing system on the rutting instrument with double wheel group pneumatic tires, tire size, tread, inflation pressure and the distance between the tires can be adjusted (the wheel fixing shaft can be removed from the wheel fixing frame and installed Fixed, the wheel fixing shaft is a threaded steel shaft, two screws can fix a tire at any position on the shaft, and the two tires use the same fixing method, so that the distance between the two tires can be adjusted arbitrarily. The distance can be measured with a vernier caliper. After adjusting the distance between the wheels, install the fixed shaft of the wheel on the fixed frame of the wheel). On the lifting arm, simulate the rutting groove formed by the car on the road surface on the full-thickness rutting specimen (the specimen is the test mold, according to the required size, and the custom mold is customized). The pressure distribution of the pneumatic tire is uneven, and the double-w...

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PUM

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Abstract

The invention discloses a W-shaped rutting bump height measuring device and a W-shaped rutting testing system. The structure of the W-shaped rutting bump height measuring device is that: two fixing brackets are arranged on a test mould and are both provided with a vertical sliding rod; the horizontal sliders for conducting the W-shaped rutting bump displacement are arranged on the sliding rods; the W-shaped rutting bump height measuring device further comprises a horizontal connection rod with a fixed height; the connection rod is provided with a displacement sensor for sensing the displacement change of the sliders; and the connection rod and the displacement sensor are both arranged above the sliders. The W-shaped rutting bump height measuring device and the W-shaped rutting testing system can measure the bump depth of W-shaped ruttings to reflect the actual pavement conditions more really, and the accuracy of rutting tests is further improved on the basis.

Description

technical field [0001] The invention relates to a W-shaped rut uphill height measuring device and a W-shaped rut testing system. Background technique [0002] Asphalt pavement is the mainstream structural form of my country's highway pavement, but with the surge in traffic volume and the increase of heavy vehicles, overloading is becoming more and more serious, and the rutting damage of my country's highways is becoming more and more serious. , some early-built expressways have entered the maintenance period. The traditional rutting treatment method basically adopts milling and re-paving the surface layer. This method is very expensive to deal with, and it is easy to cause damage to the old road surface and produce milling waste to pollute the environment. The construction interferes seriously with traffic. Micro-surfacing and slurry seal (collectively referred to as slurry mixture) technology has been paid more and more attention to rutting treatment and maintenance. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/02G01N33/42
Inventor 关宏信罗增杰叶群山
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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