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Título del libro: Asme 2014 Dynamic Systems And Control Conference, Dscc 2014
Título del capítulo: Building stiffness estimation by wave traveling times

Autores UNAM:
JESUS MORALES VALDEZ; LUIS AGUSTIN ALVAREZ ICAZA LONGORIA;
Autores externos:

Idioma:
Inglés
Año de publicación:
2014
Palabras clave:

Buildings; Delay control systems; Human robot interaction; Machine design; Modal analysis; Multi agent systems; Robotics; Robots; Stiffness; Time delay; Vibration analysis; Vibrations (mechanical); Wave propagation; Wind power; Building integrity; Building stiffness; Heterogeneous characteristic; Identification method; Multistory building; Novel techniques; Propagation method; Wave traveling; Networked control systems


Resumen:

A novel technique to estimate stiffness in buildings is presented. In contrast with most of the available work in the literature that resorts to diverse forms of modal analysis, this local technique is based on the propagation of a Ricker pulse through the structure and on measuring the wave arrival times at each story of the building, represented as a single layer in a multiple stratum model. These arrival times are later used to recuperate building stiffness at each story. Wave propagation is based on the Thomson-Haskell method, that allows to generalize the wave propagation method to multi-story buildings without significant changes to the original formulation. The number of calculated parameters is small in comparison with methods based on modal analysis. This technique provides and quick and easy methodology to assess building integrity and is an interesting alternative to verify results obtained by other identification methods. Simulation results for building with heterogeneous characteristics across the stories confirm the feasibility of the proposal. © 2014 by ASME.


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