Stress-strain detection device for orthotropic steel bridge deck pavement layer

The utility model relates to an orthotropic steel bridge deck pavement layer stress strain detection device, which comprises a steel box girder, a first layer sensor, a pavement layer, a second layer sensor, a data acquisition device and a computer processing device, the steel box girder comprises a plurality of diaphragm plates, a plurality of U-shaped ribs and a steel plate, the first layer sensor is arranged at the top of the steel box girder, and the second layer sensor is arranged at the bottom of the steel box girder. Comprising at least two transverse strain sensors and at least three longitudinal strain sensors, the pavement layer comprises a first pavement layer and a second pavement layer which are sequentially arranged above the steel box girder and supported by the steel box girder, and the second layer of sensors are located between the first pavement layer and the second pavement layer. Comprising at least two transverse strain sensors and at least three longitudinal strain sensors, the data acq