Published
Evaluation of Green's function when simulating earthquake records for dynamic tests
Evaluación de la función de Green en simulación de registros sísmicos para ensayos dinámicos
Keywords:
Green’s function, earthquake record, shake table test, similitude requirement (en)función de Green, registro sísmico, ensayo en mesa vibratoria y requisitos de similitud (es)
When dynamic performance of structures is assessed experimentally, most experimental studies consider variation in intensity by increasing the record of peak ground acceleration or displacement at different values. However, severity of earthquake motion is not only a function of the concerns instrumental intensity, but also the frequency content, duration and the amount of energy imposed on the structure. To fulfill dynamic test conditions, this paper describes and discusses a novel method for selecting several seismic events characterising the seismic area and fulfilling particular similitude requirements. The method included using an earthquake record as an empirical Green's function for simulating larger magnitude events. Three seismic events used for shake table testing of reinforced concrete walls for low-rise housing are presented and discussed to validate the proposed method's results.
Cuando se evalúa experimentalmente el desempeño dinámico de las estructuras, la mayoría de estudios consideran la variación de la intensidad a partir del incremento del registro, hasta los diferentes valores de la aceleración o del desplazamiento máximo del mismo. Sin embargo, la severidad del movimiento sísmico es una función no sólo de la intensidad instrumental, sino del contenido de frecuencias y de la cantidad de energía impuesta sobre la estructura. Para cumplir las condiciones dinámicas del ensayo, el artículo describe y discute un nuevo método para seleccionar varios eventos símicos, que caracterizan la zona sísmica y que cumplen con requisitos particulares de similitud. El método incluye el uso de un registro sísmico como una función empírica de Green para simular eventos de mayor magnitud. Para validar los resultados del método propuesto, se presentan y discuten tres eventos sísmicos que fueron utilizados para ensayos en mesa vibratoria de muros de concreto reforzados para vivienda de baja altura.
References
Arias, A., A measure of earthquake intensity., In: Seismic design for nuclear power plants., MIT Press, 1970, pp. 438-483.
Carrillo, J., Alcocer, S., Simplified equation for estimating periods of vibration of concrete wall housing., Engineering Structures, Vol. 52, 2013, pp. 446-454.
Carrillo, J., Alcocer, S., Seismic performance of concrete walls for housing subjected to shaking table excitations., Engineering Structures, Vol. 41, 2012, pp. 98-107.
Dowling, D., Seismic strengthening of adobe-mudbrick houses., PhD Thesis, University of Technology, Sydney, Australia, 2006.
Hartzell, S., Earthquake aftershocks as Green's functions., Geophysical Research Letters, Vol. 5, No. 4, 1978, pp. 1-4.
Kanamori, I., The energy release in great earthquakes., Geophysical Research, Vol. 82, No. 20, 1977, pp. 2981-2988.
Kohrs-Sansorny, C., Courboulex, F., Bour, M., Deschamps, A., A two-stage method for ground-motion simulation using stochastic summation of small earthquakes., Bulletin of the Seismological Society of America, Vol. 95, No. 4, 2005, pp. 1387-1400.
Koller, M., Lachet, C., Fourmaintraux, D., Seismic hazard assessment with the aid of empirical Green's functions., Proc. 11th World Conference on Earthquake Engineering, Acapulco, Mexico, paper 724, 1996.
Ordaz, M., Singh, S., Source spectra and spectral attenuation of seismic waves from Mexican earthquakes, and evidence of amplification in the hill zone of Mexico City., Bulletin of the Seismological Society of America, Vol. 82, 1992, pp. 24-43.
Ordaz, M., Arboleda, J., Singh, S., A scheme of random summation of an empirical Green's function to estimate ground motions from future earthquakes., Bulletin of the Seismological Society of America, Vol. 85, No. 6, 1995, pp. 1635-1647.
Santoyo, M., Singh, S., Mikumo, T., Source process and stress change associated with the 11 January, 1997 (Mw = 7.1) Michoacán, Mexico, inslab earthquake., Geofísica Internacional, Vol. 44, No. 4, 2005, pp. 317-330.
Tomazevic, M., Velochovsky, R., Some aspects of experimental testing of seismic behavior of masonry walls and models of masonry buildings., Earthquake Engineering and Structural Dynamics, Vol. 21, No. 11, 1992, pp. 945-963.
How to Cite
License
Copyright (c) 2013 Julian Carrillo, Astrid Rubiano, Arnoldo Delgado
This work is licensed under a Creative Commons Attribution 4.0 International License.
The authors or holders of the copyright for each article hereby confer exclusive, limited and free authorization on the Universidad Nacional de Colombia's journal Ingeniería e Investigación concerning the aforementioned article which, once it has been evaluated and approved, will be submitted for publication, in line with the following items:
1. The version which has been corrected according to the evaluators' suggestions will be remitted and it will be made clear whether the aforementioned article is an unedited document regarding which the rights to be authorized are held and total responsibility will be assumed by the authors for the content of the work being submitted to Ingeniería e Investigación, the Universidad Nacional de Colombia and third-parties;
2. The authorization conferred on the journal will come into force from the date on which it is included in the respective volume and issue of Ingeniería e Investigación in the Open Journal Systems and on the journal's main page (https://revistas.unal.edu.co/index.php/ingeinv), as well as in different databases and indices in which the publication is indexed;
3. The authors authorize the Universidad Nacional de Colombia's journal Ingeniería e Investigación to publish the document in whatever required format (printed, digital, electronic or whatsoever known or yet to be discovered form) and authorize Ingeniería e Investigación to include the work in any indices and/or search engines deemed necessary for promoting its diffusion;
4. The authors accept that such authorization is given free of charge and they, therefore, waive any right to receive remuneration from the publication, distribution, public communication and any use whatsoever referred to in the terms of this authorization.
