Real-time monitoring device for pavement paving thickness and ironing vibration frequency

Abstract

The invention belongs to the field of road construction quality control, and provides a device which can be used for automatically monitoring the pavement paving thickness and ironing vibration frequency of a highway with high precision in real time. The device can be used for achieving real-time measurement on the pavement paving quality, can also be used for remotely sending measurement information to a database for follow-up quality evaluation application, ensures that the paving quality can meet design requirements, can perform real-time alarm on substandard conditions, and ensures that a statistical diagram is formed to be taken as the basis for relevant departments to carry out the paving quality management. Therefore, the device adopts a technical scheme as follows: a real-time monitoring device of the pavement paving thickness and ironing vibration frequency comprises a paving thickness and ironing vibration measurement device, a GPS real-time positioning device, an integrated controller and a data wireless transmission device (DTU), wherein the paving thickness and ironing vibration measurement device comprises a steel-made bracket, an inclined moving beam, a rubber wheel, an acceleration transducer and two tilt angle sensors. The device provided by the invention can be mainly applied to road construction quality control.

Description

technical field [0001] The invention belongs to the field of road construction quality control, and in particular relates to a real-time monitoring device for paving quality (including paving thickness and screed vibration frequency) of pavement structural layers during the paving process of high-grade highway pavement, namely pavement thickness and screed vibration frequency. Real-time monitoring device for ironing vibration frequency. technical background [0002] In the process of high-grade highway pavement construction, effectively controlling the pavement thickness is the key to improving highway durability and ensuring highway construction quality. In pavement construction, the method of drawing steel wire, erecting balance beams and sensors is often used to control the paving thickness [1-4]. For the wire-pulling method, since the control points for fixing the wire are separated by a certain distance, it is often difficult to precisely control the paving thickness b...

AI Technical Summary

Problems solved by technology

In this way, on the one hand, it is impossible to obtain the absolute position coordinates corresponding to the measured pavement thickness; on the other hand, the detection device must be kept moving forward in one direction during the detection process, otherwise the measured value will accumulate from the initial measurement point. The distance does not reflect the real relative distance between the detection device and the initial measuring point, so these methods cannot intuitively and accurately indicate the absolute position of the pavement when the pavement thickness is unqualified

In addition, due to the heavy weight of the vehicle body used by this type of detection device or the lack of special treatment for the wheels and tires, it is easy to sink or soften on the newly paved high-temperature asphalt concrete pavement, so it cannot be applied to detect the newly paved asphalt concrete pavement, resulting in these methods only It can be applied to the detection of the pavement thickness after compaction and cooling, so it is not easy to realize the timely control and adjustment of the pavement thickness during the pavement paving process

[0004] According to the "Highway Engineering Quality Inspection and Evaluation Standard" (JTGF80 / 1-2004), the traditional manual detection of pavement thickness usually uses the random inserting method [8-10], but the detection frequency of this method is low and representative It is poor and cannot objectively reflect the paving thickness of the entire construction pavement, and this method is greatly affected by human factors, and the test results may contain large errors

[0005] In addition, during the construction process, the paver screed often has problems such as excessive vibration and poor vibration uniformity. Since the screed is directly in contact with the paving material, its vibration behavior will directly affect the formed pavement after paving. The vibration behavior of the screed device of the paving machine is closely related to the main indicators for evaluating the quality of high-grade road construction (the smoothness and compactness of the road surface), so the vibration frequency of the screed has a significant impact on ensuring the quality of pavement paving[11-12 ], real-time monitoring of screed vibration frequency during construction is of great significance for improving pavement quality

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