Time and Frequency Analysis of the Bridge Dynamic Load Monitoring Instrument

Along the transportation developing,the vehicles carry more,run faster,and the number of vehicles is bigger.The destruction is day by day serious to the bridge.It becomes one of important tasks for bridge maintenance to carry on the bridge dynamic load monitoring on time.Quickly grasping the bridge dynamic load performance is very important to judge the bridge comprehensive condition and disease.It is also important for safe transportation.This article uses Visual Basic to make programme.It makes the bridge vibration signal which is from the acceleration instrument become the time domain and the frequency range graphics to be analyzed.And that provides the important warrant for monitoring and evaluating the bridge.