Se presenta un método de identificación por mínimos cuadrados de los parámetros de un modelo por cortante de un edificio que considera tres grados de libertad por cada piso. La excitación para la identificación se supone proveniente de dos componentes ortogonales horizontales de movimiento del terreno inducido por un sismo. El conocimiento de estos parámetros resulta útil en la aplicación de técnicas de control semiactivas que atenúen la vibración de los edificios durante el sismo y prevengan daños permanentes. El método usado introduce una variación en la formulación convencional de mínimos cuadrados que permite una reducción sustancial en el número de cálculos involucrados, lo que hace factible la aplicación de la metodología en tiempo real. Para probar el método se utiliza un conjunto de datos registrados en dos edificios instrumentados durante la ocurrencia de un sismo. Los resultados obtenidos permiten comprobar la eficacia del algoritmo para reconstruir las aceleraciones de los entrepisos y recuperar las frecuencias fundamentales de vibración de la estructura
Journal Information
Vol. 5. Issue 1.
Pages 124-134 (January 2008)
Vol. 5. Issue 1.
Pages 124-134 (January 2008)
Open Access
Identificación paramétrica de edificios sujetos a excitación sísmica bidimensional1
Visits
4993
This item has received
Article information
Resumen
Keywords:
identificación paramétrica en tiempo real
control semiactivo de estructuras
mínimos cuadrados
cálculo de estructuras
integridad de estructuras
Full text is only aviable in PDF
Referencias
[Åström et al., 1995]
K.J. Åström, B. Wittenmark.
Adaptive Control.
2nd ed, Addison-Wesley, (1995),
[Angeles and Alvarez-Icaza, 2005]
J.M. Angeles, L. Alvarez-Icaza.
3D identification of a seismically excited building.
Proceedings of the 16th IFAC World Congress,
[Angeles and Alvarez-Icaza, 2006]
J.M. Angeles, L. Alvarez-Icaza.
3D identification of a seismically excited building with sensors arbitrarily placed.
Proceedings of the 2006 American Control Conference, pp. 3807-3812
[Chase et al., 2004]
J.G. Chase, L.R. Barroso, S. Hunt.
The impact of total acceleration control for semi-active earthquake hazard mitigation.
Engineering Structures, 26 (2004), pp. 201-209
[Chopra, 1995]
A.K. Chopra.
Dynamics of Structures: Theory and Applications to Earthquake Engineering.
Prentice-Hall, (1995),
[Dyke et al., 1996]
S.J. Dyke, B.F. Spencer, M.K. Sain, J.D. Carlson.
Seismic response reduction using magnetorheological dampers.
Proceedings of the 1996 IFAC World Congress, pp. 145-150
[Ioannou and Sun, 1996]
P.A. Ioannou, J. Sun.
Robust Adaptive Control.
Prentice-Hall, (1996),
[Jiménez and Alvarez, 2007]
R. Jiménez, L. Alvarez.
A real-time estimation scheme for buildings with intelli- gent dissipation devices.
Mechanical Systems and Signal Processing, 21 (2007), pp. 2427-2440
[Jiménez and Alvarez-Icaza, 2007]
R. Jiménez, L. Alvarez-Icaza.
Proceedings of the 2007 American Control Conference, (2007), pp. 2236-2241
[Khalil, 1996]
H.K. Khalil.
Nonlinear Systems.
2nd ed, Pretice Hall, (1996),
[Ko and Hung, 2002]
W.J. Ko, C.F. Hung.
Extraction of structural system matrices from an identified state-space system using the combined mea- surements of DVA.
Journal of Sound and Vibration, 249 (2002), pp. 955-970
[Liu et al., 2005]
Y. Liu, T.P. Waters, M.J. Brennan.
A comparison of semi-active damping control strategies for vibration isolation of harmonic disturbances.
Journal of Sound and Vibration, 280 (2005), pp. 21-39
[Lus et al., 1999]
H. Lus, R. Betti, R.W. Longman.
Identification of linear structural systems using earthquake-induced vibration data.
Earthquake Engineering and Structural Dynamics, 28 (1999), pp. 1449-1467
[Meli, 1985]
Meli, R. (1985). Diseño estructural. Limusa.
[Naeim and Farzad, 1994]
Naeim, Farzad (1994). Response of instrumented buildings to 1994 northridge earthquake. Technical report. John A. Martin and Associates, Inc.
[Nagarajaiah and Zhiling, 2004]
Satish Nagarajaiah, Li Zhiling.
Time segmented least squares identification of base isolated buildings.
Soil Dynamics and Earth- quake Engineering, 24 (2004), pp. 577-586
[Paz, 1997]
M. Paz.
Structural Dynamics: theory and computation.
4th. ed, Chapman & Hall, International Thomson Publishing, (1997),
[Qing et al., 2003]
S. Qing, Z. Ling, Z. Jinxiong, S. Qingxuan.
Experimental study of the semiactive control of building structures using the shaking table.
Earthquake Engineering and Structural Dynamics, 32 (2003), pp. 2353-2376
[Ribakov and Gluk, 1999]
Y. Ribakov, J. Gluk.
Active control of mdof structures with supplemental electrorheological fluid dampers.
Earthquake Engineering and Structural Dynamics, 28 (1999), pp. 143-156
[Safak, 1995]
E. Safak.
Detection and identification of soil-structure interaction in buildings from vi- bration recordings.
ASCE Journal of Struc- tural Engineering, 121 (1995), pp. 899-906
[Stewart and Fenves, 1998]
J.P. Stewart, G.L. Fenves.
System identification for evaluating soil-structure in- teraction effects in buildings from strong motion recordings.
Earthquake Engineering and Structural Dynamics, 27 (1998), pp. 869-885
[Ying et al., 2005]
Z.G. Ying, Y.Q. Ni, J.M. Ko.
Semi- active optimal control of linearized systems with multi-degree of freedom and application.
Journal of Sound and Vibration, 279 (2005), pp. 373-388
Copyright © 2008. Elsevier España, S.L.. Todos los derechos reservados