Pavement flatness detection device and method

Abstract

According to the pavement flatness detection device and method provided by the invention, the pavement flatness can be accurately tested in a relatively long range, the defects of an existing experimental device are overcome, and data obtained by an experiment are more accurate. The device comprises a cross rod, a distance measuring mechanism, a leveling mechanism and a rigid support. The middle of the cross rod is hinged to the top of the rigid support, and the cross rod is kept horizontal through a leveling mechanism. The cross rod comprises a main cross rod and a plurality of sections of small cross rods sleeved in the two ends of the main cross rod, and the measuring length of the small cross rods is adjusted by pulling; the distance measuring mechanism comprises a plurality of laser distance measuring instruments arranged on the lower surface of the transverse rod and used for measuring the distance between multiple points on the lower surface of the transverse rod and the ground. The left side and the right side of the interior of the main cross rod are each provided with a plurality of small cross rods, the length can be adjusted through pulling, the adjustable length range is large, road surface flatness detection within a long range distance can be achieved, the defects of an existing experimental device are overcome, and data obtained through experiments are more accurate.

Description

technical field [0001] The invention belongs to the technical field of road surface detection, and in particular relates to a road surface smoothness detection device and method. Background technique [0002] With the rapid development of my country's economic construction, the construction of bridges and roads has also made leaps and bounds, especially the importance of road construction to the transportation industry is self-evident. Pavement roughness refers to the deviation value of the longitudinal unevenness of the pavement. It is an important index in pavement evaluation and pavement construction acceptance. It mainly reflects the flatness of the profile curve of the pavement longitudinal section. It is related to the safety and comfort of driving, as well as the size and service life of the impact force on the road surface. The uneven road surface will increase the driving resistance and cause additional vibration to the vehicle. This vibration will cause driving bu...

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Problems solved by technology

[0004] However, the existing road surface roughness testing equipment has the following problems: (1) The testing equipment is not long enough to cope with wider and wider road surfaces; when facing a wider road surface, it must be measured in stages and sections, which greatly affects the measurement accuracy ;(2) In the long-distance measurement of existing detection instruments, it is necessary to estimate the maximum gap between the ruler and the road surface with the naked eye and then measure, resulting in low detection quality; (3) The existing instrument structure is complicated and the operation is cumbersome; (4) The test results of existing instruments are relatively mechanical, and it is difficult to adapt to the test requirements of road surfaces of various grades, and it is also difficult to rule out accidental errors

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