METHOD FOR EVALUATING BEAM DISPLACEMENT UNDER MOVING LOAD BY DOUBLE INTEGRATION OF ACCELERATION

摘要

PURPOSE: A method for processing signal of acceleration measured value for calculating displacement response of a beam by moving loads is provided to rapidly and economically determine shock coefficient and safety of large structures by developing and using a signal processing method of performing double integral to measured acceleration signal and obtaining displacement response. CONSTITUTION: A method for processing signal of acceleration measured value for calculating displacement response of a beam by moving loads includes the steps of mounting ultrasonic sensors on an entrance and an exit of a beam, measuring acceleration signal in a position for calculating dynamic displacement, measuring the entrance and exit time of moving loads with the ultrasonic sensors, determining an initial condition and a final condition, converting measured data into digital data, and performing double integral in a time region or a frequency region and obtaining dynamic displacement of the beam in a transient region.