Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The present work discusses the development and experimental validation of a method for moving force identification (MFI) on bridge structures. Its basic idea is to find the optimal forces that minimize the difference between the computed and the measured time histories of structural responses for a limited number of measurement points. For this, an optimization problem was formulated in time domain, which considers the magnitude of each moving force in each time instant as an unknown optimization variable. The problem formulation takes into account acceleration and displacement measurement data. The direct computation of the structural responses is based on the modal superposition approach, whereas the modal equations of motion are solved using the time integration method of Newmark. This formulation allows the application of the proposed method with any finite element (FE) model with arbitrary level of detail.
The present work discusses the development and experimental validation of a method for moving force identification (MFI) on bridge structures. Its basic idea is to find the optimal forces that minimize the difference between the computed and the measured time histories of structural responses for a limited number of measurement points. For this, an optimization problem was formulated in time domain, which considers the magnitude of each moving force in each time instant as an unknown optimization variable. The problem formulation takes into account acceleration and displacement measurement data. The direct computation of the structural responses is based on the modal superposition approach, whereas the modal equations of motion are solved using the time integration method of Newmark. This formulation allows the application of the proposed method with any finite element (FE) model with arbitrary level of detail.
Conclusions and outlook
Mechanik, Werkstoffe und Konstruktion im Bauwesen
Firus, Andrei (Autor:in)
A Contribution to Moving Force Identification in Bridge Dynamics ; Kapitel: 9 ; 273-279
12.02.2023
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
| Springer Verlag | 2019
| Springer Verlag | 2018
Discussions, Conclusions and Outlook on Further Research
| Springer Verlag | 2021
Trans Tech Publications | 2015