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Flatness measurement instrument and method for loose laying layer of bituminous pavement

A technology for asphalt pavement and flatness, which is applied in the field of asphalt pavement loose layer flatness measuring instrument, which can solve the problems of affecting the accuracy of flatness measurement, low test efficiency, and slow data collection, so as to overcome inaccurate measurement and low efficiency , simple structure and low cost

Active Publication Date: 2017-02-22
GAOYUAN HIGHWAY MAINTENANCE TECH HENAN PROV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0009] ①The 3m ruler method is manually operated, the data collection is slow, and only a small amount of data can be measured, the test efficiency is low, and it is not suitable for long-distance continuous measurement
[0010] ②Due to the high temperature of the hot-mix asphalt mixture pavement, after a period of use of the 3m ruler, the bottom surface is prone to warping, which seriously affects the accuracy of the flatness measurement

Method used

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  • Flatness measurement instrument and method for loose laying layer of bituminous pavement
  • Flatness measurement instrument and method for loose laying layer of bituminous pavement
  • Flatness measurement instrument and method for loose laying layer of bituminous pavement

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Embodiment Construction

[0040] Below in conjunction with accompanying drawing, the present invention will be described in further detail:

[0041] see figure 1 with figure 2 , the present invention provides a loose layer flatness measuring instrument comprising a folding beam 4, see figure 2 , The bottom ends of the folding beam 4 are provided with three sliding shoes 1 for supporting the folding beam 4, specifically, one at the front and two at the rear, and the distance between the front and rear sliding shoes is 3m. The purpose of installing the sliding shoes 1 at both ends of the folding beam 4 is: ① avoiding the deformation of the folding beam due to the high temperature of the loose layer; Move on the layer without causing settlement.

[0042] see figure 1 , one end of the folding beam 4 is equipped with a rear end cover 2, and the other end is equipped with a front end cover 11. The front end cover 11 is provided with a drawbar 9, and the rear end cover 2 and the front end cover 11 are a...

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Abstract

The invention discloses a flatness measurement instrument and method for a loose laying layer of a bituminous pavement. The flatness measurement instrument comprises a foldable folding beam, wherein a plurality of piston shoes used for supporting the folding beam are arranged at the bottom of the folding beam, a steel wire rope is arranged in the folding beam, the folding beam is arranged horizontally, parallel supporting rods are arranged on the folding beam, the supporting rods are arranged horizontally, a first vertical rod and a second vertical rod are arranged on the supporting rods, a measurement shoe capable of moving up and down is arranged at the bottom end of the first vertical rod, and a distance measurement sensor connected with the measurement shoe is arranged on the second vertical rod. The flatness measurement instrument for the loose laying layer is of a foldable structure, the distance measurement sensor installed on the folding beam can continuously measure flatness changes of the loose laying layer laid through a paver, warping caused by high temperature is avoided, and measurement precision is improved compared with a measurement method through a 3-m ruler. The flatness measurement instrument for the loose laying layer is mainly composed of the folding beam, the piston shoes and the distance measurement sensor and is simple in structure, low in manufacturing price and convenient to use.

Description

technical field [0001] The invention belongs to the field of highway construction, and in particular relates to a measuring instrument and a measuring method for the flatness of a loose layer of asphalt pavement. Background technique [0002] "Road Engineering Terminology Standard" (GBJ124-88) defines the road surface roughness as: the deviation value of the longitudinal unevenness of the road surface. At present, the common measurement tools for road surface roughness in our country include: continuous flatness meter, bump accumulator and 3m ruler. [0003] Structural features and applications of common measurement tools: [0004] ① The continuous flatness meter is an eight-wheel meter: the measuring instrument consists of a 3m-long frame, four walking wheels (commonly known as "eight-wheel meter") at the front and back, a measuring wheel in the middle, and data acquisition, processing and storage display system composition. The frame can be shortened or folded, and the ...

Claims

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Application Information

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IPC IPC(8): G01B21/30E01C23/01
CPCG01B21/30E01C23/01
Inventor 刘洪海宋强张志耕辛强邵晓峰
Owner GAOYUAN HIGHWAY MAINTENANCE TECH HENAN PROV
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