Modal identification of bridge systems using state‐space methods

摘要: Arrays of large numbers sensors and accompanying complex system identification (SI) methods have been recently used in engineering applications on structures ranging from real space trusses to simple experimental beams. However, practical application strong motion data recorded civil systems is limited. In this study, state-space are for modal earthquake records with further investigation into the effectiveness viewpoint sensor layout configuration. The study presented paper adopts a deterministic approach, which complemented statistical evaluation another paper. SI include eigen realization, realization information matrix subspace methods. instrumented bridge California included performance these compared terms success feasibility. Subsequently, viability arrays different investigated. This motivated by fact that wireless communication may be conveniently installed future. Computational costs limits applicability examined using simulated ground analysis detailed finite element models after validation shaking. Moreover, effect configuration considered, accounting noise levels reflect more realistic situations. Copyright © 2005 John Wiley & Sons, Ltd.