A full-scale pavement heating system, a full-scale pavement testing machine and a full-scale pavement heating method

Abstract

The invention discloses a full-scale pavement heating system, which comprises a heating vehicle, a thermocouple temperature measurement sensor, a power distribution box, a data collection box and an industrial personal computer, wherein the heating vehicle consists of a frame, a control box and a heating device, the control box is arranged on the frame, and the heating device is arranged on one side of the frame; the power distribution box is electrically connected with and supplies power for the control box; the thermocouple temperature measurement sensor is electrically connected with the control box and used for acquiring the temperature for heating a full-scale pavement; the data collection box is electrically connected with the industrial personal computer and the control box and used for processing a temperature signal fed back by the control box, sending the signal to the industrial personal computer, and sending the signal fed back by the industrial personal computer to the control box. According to the full-scale pavement heating system, the heating zone of the whole pavement can be heated to meet the temperature needed by test; the accurate and flexible control on the temperature of the full-scale pavement can be flexibly realized. The invention further discloses a full-scale pavement testing machine and a full-scale pavement heating method.

Description

technical field [0001] The invention relates to the technical field of full-scale testing, in particular to a full-scale pavement heating system, a full-scale pavement testing machine and a full-scale pavement heating method. Background technique [0002] The full scale means that the size of the test object is consistent with the actual object, which can truly and intuitively reflect the actual data of the test object. At present, in the full-scale pavement accelerated loading test area (20m×1m), in order to complete the test of the mechanical properties and damage limit of the asphalt pavement at a specific temperature, it is necessary to simulate a stable temperature environment for the asphalt pavement in the test area to reduce the actual natural environmental conditions. Complex and changeable and affect the test results. The existing full-scale pavement heating system adopts a fixed heating method. For the current use of an integral fixed heating device, there are ma...

AI Technical Summary

Problems solved by technology

This heating method is due to the fact that the full-scale road surface accelerated loading test equipment has been placed outdoors for a long time, and the heating device is also affected by the vibration of the main engine and environmental erosion for a long time, thus accelerating the aging and fracture of the heating device and shortening its service life. reduces its poor reliability in use

[0005] 2. The overall road surface is heated, and the temperature control is not flexible

[0006] Since the entire pavement heating area is heated in an integral way, it cannot be automatically adjusted according to the road surface temperature of different road sections, so it is impossible to achieve accurate and flexible control of the full-scale pavement temperature in the experimental area

[0007] 3. High heat loss, no energy saving

[0008] Since the full-scale road surface heating system is simulated on the road surface of the field experiment area, the experimental area is affected by the movement of the accelerated loading truss vehicle and the influence of the surrounding wind and temperature. Part of the heat energy radiated by the heating plate will be taken away by the flowing air. Therefore, it needs to consume more electric energy, which does not meet the requirements of energy saving and environmental protection.

[0009] 4. There are potential safety hazards in long-term use

[0010] Since the heating system uses 380V AC power supply, the electric heating wire inside the heating device is prone to damage or aging due to factors such as long-term vibration and leakage, short circuit and other problems, and there are certain safety hazards in use.

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