A real-time monitoring device for pavement paving thickness of balance beam type

Abstract

The invention discloses an equalizing beam type road surface paving thickness real-time monitoring device. The device comprises seven parts in all, namely an equalizing beam type paving thickness measurement device, an integrated controller, a wireless data transmission unit (DTU), a database and application server, a monitoring client end, a vehicle-mounted display device and a field alarm device. According to the equalizing beam type road surface paving thickness real-time monitoring device, vertical distance is measured through an equalizing beam and by means of laser distance measurement instruments, and furthermore, paving thickness is calculated based on the height difference (distance difference) of the same position point; through real-time and automatic measurement conducted on paving thickness of a road surface structural layer in the highway road surface paving process, paving quality is reflected in real time based on the thickness variation condition; and quality control can be achieved, and meanwhile, collected relevant measurement data are sent and stored into a remote database for subsequent construction quality evaluation and analysis. When paving thickness is unqualified, an alarm is given in real time so that feedback and adjustment can be conducted in time.

Description

technical field [0001] The invention belongs to the field of road construction quality control, and specifically relates to a real-time monitoring device for the paving thickness of asphalt / water stability and other pavement structural layers during the pavement paving process of high-grade highways, so as to control the paving quality Purpose. Background technique [0002] The quality control of the pavement paving process is an important link in the quality management of highway construction. For pavement engineering, the thickness of each pavement structural layer is closely related to the overall strength of the road. Unqualified pavement thickness is one of the main reasons for premature failure of the road. Only when the pavement thickness meets the engineering requirements can it be effectively Control the quality of highway construction [1-3]. [0003] The traditional pavement thickness detection methods mainly include: elevation method and drilling sampling method...

AI Technical Summary

Problems solved by technology

However, these methods, like the drilling sampling method, belong to post-event detection, and cannot realize real-time paving thickness monitoring during the construction process, so it is difficult to realize timely feedback of paving quality defects

[0005] In terms of related patents, the Chinese utility model patent [12] with the patent application number 2014201224720.0 proposes a measuring gauge for asphalt pavement paving thickness; the Chinese utility model patent [13] with the patent application number 201520853838.5 proposes an asphalt pine Although these methods have the advantages of reducing measurement errors and being easy to carry and operate, they still need to be done manually, and it is impossible to automatically, real-time, and continuously measure the paving thickness

Among the patents applied by the research group in the early stage, the Chinese utility model patents [14-15] with application numbers 201510100523.8 and 201510100304.X proposed a monitoring method for the thickness of asphalt pavement paving. It is a hand-held thickness measuring device, which also has the shortcomings of manual measurement and limited measurement (discontinuous) at designated points; the Chinese utility model patent [16] with application number 201410057420.3 proposes the thickness of high-grade highway pavement Although the real-time monitoring method and monitoring system can realize real-time paving thickness monitoring, on the one hand, the use of total stations increases the cost of technical methods; The process of obtaining the pavement thickness by projection etc. is cumbersome; the plug-in automatic measuring device for road pavement pavement thickness proposed by the Chinese utility model patent [17] with the application number 201410810865.4 is subject to the preset pressure and the sensitivity of the probe. Limitation, when the set pressure value is not accurate enough or the probe is not sensitive enough to judge whether it penetrates into the paving surface and the datum surface, or there is a deviation, it will have a certain impact on the measurement accuracy of the final paving thickness; the application number is 201510058336.8 China The utility model patent [18] proposes a real-time monitoring device for road pavement thickness and screed vibration frequency. Since the pavement thickness is calculated through the spatial geometric relationship, the processing and installation requirements for the device are relatively high. Once the device size or Errors in the position will directly affect the measurement results of the paving thickness; at the same time, the device will be disturbed by the smoothness of the road surface during the paving operation process. When the road surface is uneven and the device has a space tilt, it will also cause inaccurate results

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