Improved Algorithm for Ground Motion Inversion and Structural Parameters Identification

摘要

This paper focuses on the ground motion inversion and structural parameters identification without input information. By taking the mechanical characteristic of ground motion as an addition condition, considering the relationship between relative magnitude and absolute magnitude in dynamic equation, and using statistical average, an iterative procedure is developed so that the input process and structure parameters can be correctly determined only using output measurements. The iterative procedure is used for estimating structure parameters and inversing load process simultaneously. The key of the iterative procedure is to add the effect of earthquake ground motion to measuring information. The validity of the method is proved by both theoretical analysis and numerical simulation, which make the utilization of this algorithm more reasonable.