Temperature stress monitoring device for pavement structure layer

Abstract

The invention relates to the technical field of road monitoring, in particular to a temperature stress monitoring device for a pavement structure layer. The device comprises a measuring box embedded into the pavement structure layer, a PE wire guiding-out pipe embedded into the pavement structure layer, a wire and a data acquisition unit. A sensor is arranged inside the measuring box, the sensor is connected to one end of the wire, and after penetrating through the PE wire guiding-out pipe, the other end of the wire is connected to the data acquisition unit. By adopting the structural arrangement, temperature and temperature stress changes of the pavement structure layer can be monitored in real time, the temperature and the temperature stress of any pavement structural layer can be accurately monitored, an effective way is supplied to obtain temperature stress conditions borne by pavement structure layers under different working conditions and regions, the solid data foundation is laid for researching the relation between the temperature changes and the temperature stress of the pavement structure layer, and data support is supplied to further correct existing pavement mechanicalanalysis and numerical value simulation.

Description

technical field [0001] The invention relates to the technical field of road monitoring, in particular to a temperature stress monitoring device for a pavement structural layer. Background technique [0002] The pavement types in my country are mainly asphalt concrete pavement and cement-stabilized base structure, while asphalt mixture and cement-stabilized materials are temperature-sensitive materials, especially cement-stabilized materials, which are extremely susceptible to external environmental temperature changes. Thermal expansion or cold contraction, and large temperature stress due to the internal constraints of the pavement structure. When the temperature stress is too large, the pavement structure will be damaged, which will have adverse consequences on the performance of the road. [0003] The temperature stress of each structural layer of the pavement due to temperature changes has a very important impact on the performance of the pavement. The temperature distrib...

AI Technical Summary

Problems solved by technology

At present, a large number of studies have been carried out on the distribution of the temperature field of the pavement structural layer, but the relationship between the temperature change and the temperature stress of the pavement structural layer is mostly limited to theoretical calculation analysis and numerical simulation.

In addition, in terms of road monitoring technology, the temperature and humidity monitoring technology for pavement structure is relatively mature at present, but there is almost no development in the field of temperature stress monitoring of pavement structural layer, and there is no monitoring instrument and equipment specially applicable to the temperature stress of pavement structural layer. method

At the same time, since the road structure layer is also affected by the before and after construction, if the sensor measurement is directly used, not only the monitoring effect will not be achieved, but the sensor will easily be damaged.

Images