Method and system for determining in real time bearing capacity of foundation tamped by high-speed hydraulic tamper

A system for determining in real time the bearing capacity of a foundation tamped by a high-speed hydraulic tamper, comprising:

• four wireless acceleration sensors arranged uniformly along the edges of a tamping plate, the wireless acceleration sensors receiving the change trends of peak accelerations of the tamping plate during tamping;
• a global positioning system (GPS) is set in each wireless acceleration sensor to position a tamping point, and a remote processor simultaneously acquires position information of the tamping points and single-point accelerations of the tamping plate;
• and
• the processor, configured to receive detection values of the wireless acceleration sensors, acquire position information of the tamping points, acquire corresponding settlements under different loads, establish coordinate axes using the settlements as horizontal coordinates and the loads as vertical coordinates, draw points according to each group of test data, sequentially connect the points with a smooth curve to obtain a settlement-load curve, and fit the curve;
• inversely calculate the bearing capacity of the foundation by using the corresponding tamping settlement under certain number of tamping to obtain a relationship between the number of tamping and the bearing capacity of the foundation;
• and
• establish relationship curves between the acceleration and the number of tamping and between the bearing capacity of the foundation and the number of tamping, combine the two relationship curves to fit a relationship curve between the acceleration and the bearing capacity of the foundation, and determine the magnitude of the bearing capacity of the foundation at a certain moment during the tamping operation of the hydraulic tamper by using the acceleration index.