ABSTRACT
In road engineering, large amounts of pavement vibration acceleration signals can be collected by using acceleration sensors. On the basis, the ability to obtain more valuable information related to pavement performance by dealing with these data has become a key problem. In order to provide relatively accurate velocity and displacement for further studies, this research introduced the formation principle of trend items during integration, and emphatically expounded the integral processing of vibration acceleration from two aspects of indoor and outdoor tests. By comparing and analyzing the integral results in time domain and frequency domain, it was found that it is necessary to process the original data before integration to avoid the trend items, and the frequency domain integral method can reduce integral errors greatly in the process of continuous integration.
