Method and device for detecting deflection basin based on deformation speed under rolling load

An apparatus for detecting a deflection basin based on a deformation velocity of a pavement under a rolling load, comprising:

• an original velocity obtaining device, used to obtain vertical deformation velocities of the pavement at respective measurement timings corresponding to respective target locations in a target deflection basin during the load movement;
• a duration obtaining device, used to obtain durations for respective response time intervals corresponding to the respective target locations based on the respective measurement timings corresponding to the respective target locations, the vertical deformation velocities of the pavement at the respective measurement timings corresponding to the respective target locations and a knowledge base model for the vertical deformation velocities of the pavement;
• a representative speed obtaining device, used to obtain representative vertical deformation velocities of the pavement at the respective response time intervals corresponding to the respective target locations based on the vertical deformation velocities of the pavement at the respective measurement timings corresponding to the respective target locations, the durations for respective response time intervals corresponding to the respective target locations, and the knowledge base model for the vertical deformation velocities of the pavement;
• and
• a deflection basin detecting device, used to obtain detection results of the target deflection basin based on the representative vertical deformation velocities of the pavement at the respective response time intervals corresponding to the respective target locations and the durations for respective response time intervals corresponding to the respective target locations,
• wherein the respective target locations include a first measurement point and at least three second measurement points, the first measurement point is a location in the target deflection basin where a measurement point corresponding to a central location of a load is located, the second measurement points are locations where measurement points in the target deflection basin except the central location of the load are located;
• and each of the respective measurement timings corresponding to respective target locations is calculated from a speed of load movement and a horizontal installation location of a velocimeter in a system for detecting a deflection basin.