System identification of a full-scale five-story reinforced concrete building tested on the NEES-UCSD shake table

Rodrigo Astroza; Hamed Ebrahimian; Joel P. Conte; Jose I. Restrepo; Tara C. Hutchinson

System identification of a full-scale five-story reinforced concrete building tested on the NEES-UCSD shake table

Rodrigo Astroza, Hamed Ebrahimian, Joel P. Conte, Jose I. Restrepo, Tara C. Hutchinson

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

This paper presents the identification of the modal properties of a full-scale 5-story reinforced concrete (R/C) building outfitted with a variety of nonstructural components and systems (NCSs) tested on the unidirectional NEES-UCSD shake table in April-May, 2012. The building specimen was tested under base-isolated (BI) and fixed-base (FB) configurations. The purpose of the test program was to study the seismic response of the structure and NCSs and their dynamic interaction at different levels of seismic excitation. For each base configuration (BI and FB), the building was subjected to a sequence of earthquake base motions carefully selected so as to progressively increase the seismic demand on the structure and NCSs. Before and after each seismic test, ambient vibration (AV) data were recorded, and additionally, low amplitude white noise (WN) base excitation tests were conducted at key stages during the test protocol. Because of the low intensity of the ambient and WN base excitations, a quasi-linear response of the system is assumed, and the modal parameters of an equivalent linear time-invariant (LTI) model are estimated. Using the structural vibration data recorded by 28 accelerometers, three system identification methods, including two output-only (SSI-DATA and NExT-ERA) and one input-output (DSI), are used to estimate the modal properties of the BI and FB building between seismic tests. The results show that the modal properties obtained by different methods are in good agreement and that the estimated modal parameters of the building are affected by the amplitude of the excitation, environmental conditions, and structural/nonstructural damage in the structure.

Original language	English
Title of host publication	Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014
Editors	A. Cunha, P. Ribeiro, E. Caetano, G. Muller
Publisher	European Association for Structural Dynamics
Pages	2333-2340
Number of pages	8
Volume	2014-January
ISBN (Electronic)	9789727521654, 2311-9020
State	Published - 2014
Event	9th International Conference on Structural Dynamics, EURODYN 2014 - Porto, Portugal Duration: 30 Jun 2014 → 2 Jul 2014

Publication series

Name	Proceedings of the International Conference on Structural Dynamic , EURODYN
Volume	2014-January
ISSN (Print)	2311-9020

Conference

Conference	9th International Conference on Structural Dynamics, EURODYN 2014
Country/Territory	Portugal
City	Porto
Period	30/06/14 → 2/07/14

Bibliographical note

Funding Information:
This project was a collaboration between four academic institutions: The University of California at San Diego, San Diego State University, Howard University, and Worcester Polytechnic Institute, four major funding sources: The National Science Foundation (grant number CMMI-0936505), the Englekirk Advisory Board, the Charles Pankow Foundation, and the California Seismic Safety Commission, over 40 industry partners, and two oversight committees. Support of graduate students Consuelo Aranda, Michelle Chen, Elias Espino, Steve Mintz (deceased), Elide Pantoli, and Xiang Wang, the NEES@UCSD and NEES@UCLA staff, and contributions of Robert Bachman, Dr. Robert Englekirk and Mahmoud Faghihi are greatly appreciated. Opinions and findings in this study are those of the authors and do not necessarily reflect the views of the sponsors.

Keywords

Base isolation
Damage
Full-scale specimen
Nonstructural components
Shake table
System identification

Cite this

Astroza, R., Ebrahimian, H., Conte, J. P., Restrepo, J. I., & Hutchinson, T. C. (2014). System identification of a full-scale five-story reinforced concrete building tested on the NEES-UCSD shake table. In A. Cunha, P. Ribeiro, E. Caetano, & G. Muller (Eds.), Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014 (Vol. 2014-January, pp. 2333-2340). (Proceedings of the International Conference on Structural Dynamic , EURODYN; Vol. 2014-January). European Association for Structural Dynamics.

Astroza, Rodrigo ; Ebrahimian, Hamed ; Conte, Joel P. et al. / System identification of a full-scale five-story reinforced concrete building tested on the NEES-UCSD shake table. Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014. editor / A. Cunha ; P. Ribeiro ; E. Caetano ; G. Muller. Vol. 2014-January European Association for Structural Dynamics, 2014. pp. 2333-2340 (Proceedings of the International Conference on Structural Dynamic , EURODYN).

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title = "System identification of a full-scale five-story reinforced concrete building tested on the NEES-UCSD shake table",

abstract = "This paper presents the identification of the modal properties of a full-scale 5-story reinforced concrete (R/C) building outfitted with a variety of nonstructural components and systems (NCSs) tested on the unidirectional NEES-UCSD shake table in April-May, 2012. The building specimen was tested under base-isolated (BI) and fixed-base (FB) configurations. The purpose of the test program was to study the seismic response of the structure and NCSs and their dynamic interaction at different levels of seismic excitation. For each base configuration (BI and FB), the building was subjected to a sequence of earthquake base motions carefully selected so as to progressively increase the seismic demand on the structure and NCSs. Before and after each seismic test, ambient vibration (AV) data were recorded, and additionally, low amplitude white noise (WN) base excitation tests were conducted at key stages during the test protocol. Because of the low intensity of the ambient and WN base excitations, a quasi-linear response of the system is assumed, and the modal parameters of an equivalent linear time-invariant (LTI) model are estimated. Using the structural vibration data recorded by 28 accelerometers, three system identification methods, including two output-only (SSI-DATA and NExT-ERA) and one input-output (DSI), are used to estimate the modal properties of the BI and FB building between seismic tests. The results show that the modal properties obtained by different methods are in good agreement and that the estimated modal parameters of the building are affected by the amplitude of the excitation, environmental conditions, and structural/nonstructural damage in the structure.",

keywords = "Base isolation, Damage, Full-scale specimen, Nonstructural components, Shake table, System identification",

author = "Rodrigo Astroza and Hamed Ebrahimian and Conte, {Joel P.} and Restrepo, {Jose I.} and Hutchinson, {Tara C.}",

note = "Funding Information: This project was a collaboration between four academic institutions: The University of California at San Diego, San Diego State University, Howard University, and Worcester Polytechnic Institute, four major funding sources: The National Science Foundation (grant number CMMI-0936505), the Englekirk Advisory Board, the Charles Pankow Foundation, and the California Seismic Safety Commission, over 40 industry partners, and two oversight committees. Support of graduate students Consuelo Aranda, Michelle Chen, Elias Espino, Steve Mintz (deceased), Elide Pantoli, and Xiang Wang, the NEES@UCSD and NEES@UCLA staff, and contributions of Robert Bachman, Dr. Robert Englekirk and Mahmoud Faghihi are greatly appreciated. Opinions and findings in this study are those of the authors and do not necessarily reflect the views of the sponsors.; 9th International Conference on Structural Dynamics, EURODYN 2014 ; Conference date: 30-06-2014 Through 02-07-2014",

year = "2014",

language = "English",

volume = "2014-January",

series = "Proceedings of the International Conference on Structural Dynamic , EURODYN",

publisher = "European Association for Structural Dynamics",

pages = "2333--2340",

editor = "A. Cunha and P. Ribeiro and E. Caetano and G. Muller",

booktitle = "Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014",

}

Astroza, R, Ebrahimian, H, Conte, JP, Restrepo, JI & Hutchinson, TC 2014, System identification of a full-scale five-story reinforced concrete building tested on the NEES-UCSD shake table. in A Cunha, P Ribeiro, E Caetano & G Muller (eds), Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014. vol. 2014-January, Proceedings of the International Conference on Structural Dynamic , EURODYN, vol. 2014-January, European Association for Structural Dynamics, pp. 2333-2340, 9th International Conference on Structural Dynamics, EURODYN 2014, Porto, Portugal, 30/06/14.

System identification of a full-scale five-story reinforced concrete building tested on the NEES-UCSD shake table. / Astroza, Rodrigo; Ebrahimian, Hamed; Conte, Joel P. et al.
Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014. ed. / A. Cunha; P. Ribeiro; E. Caetano; G. Muller. Vol. 2014-January European Association for Structural Dynamics, 2014. p. 2333-2340 (Proceedings of the International Conference on Structural Dynamic , EURODYN; Vol. 2014-January).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - System identification of a full-scale five-story reinforced concrete building tested on the NEES-UCSD shake table

AU - Astroza, Rodrigo

AU - Ebrahimian, Hamed

AU - Conte, Joel P.

AU - Restrepo, Jose I.

AU - Hutchinson, Tara C.

N1 - Funding Information: This project was a collaboration between four academic institutions: The University of California at San Diego, San Diego State University, Howard University, and Worcester Polytechnic Institute, four major funding sources: The National Science Foundation (grant number CMMI-0936505), the Englekirk Advisory Board, the Charles Pankow Foundation, and the California Seismic Safety Commission, over 40 industry partners, and two oversight committees. Support of graduate students Consuelo Aranda, Michelle Chen, Elias Espino, Steve Mintz (deceased), Elide Pantoli, and Xiang Wang, the NEES@UCSD and NEES@UCLA staff, and contributions of Robert Bachman, Dr. Robert Englekirk and Mahmoud Faghihi are greatly appreciated. Opinions and findings in this study are those of the authors and do not necessarily reflect the views of the sponsors.

PY - 2014

Y1 - 2014

N2 - This paper presents the identification of the modal properties of a full-scale 5-story reinforced concrete (R/C) building outfitted with a variety of nonstructural components and systems (NCSs) tested on the unidirectional NEES-UCSD shake table in April-May, 2012. The building specimen was tested under base-isolated (BI) and fixed-base (FB) configurations. The purpose of the test program was to study the seismic response of the structure and NCSs and their dynamic interaction at different levels of seismic excitation. For each base configuration (BI and FB), the building was subjected to a sequence of earthquake base motions carefully selected so as to progressively increase the seismic demand on the structure and NCSs. Before and after each seismic test, ambient vibration (AV) data were recorded, and additionally, low amplitude white noise (WN) base excitation tests were conducted at key stages during the test protocol. Because of the low intensity of the ambient and WN base excitations, a quasi-linear response of the system is assumed, and the modal parameters of an equivalent linear time-invariant (LTI) model are estimated. Using the structural vibration data recorded by 28 accelerometers, three system identification methods, including two output-only (SSI-DATA and NExT-ERA) and one input-output (DSI), are used to estimate the modal properties of the BI and FB building between seismic tests. The results show that the modal properties obtained by different methods are in good agreement and that the estimated modal parameters of the building are affected by the amplitude of the excitation, environmental conditions, and structural/nonstructural damage in the structure.

AB - This paper presents the identification of the modal properties of a full-scale 5-story reinforced concrete (R/C) building outfitted with a variety of nonstructural components and systems (NCSs) tested on the unidirectional NEES-UCSD shake table in April-May, 2012. The building specimen was tested under base-isolated (BI) and fixed-base (FB) configurations. The purpose of the test program was to study the seismic response of the structure and NCSs and their dynamic interaction at different levels of seismic excitation. For each base configuration (BI and FB), the building was subjected to a sequence of earthquake base motions carefully selected so as to progressively increase the seismic demand on the structure and NCSs. Before and after each seismic test, ambient vibration (AV) data were recorded, and additionally, low amplitude white noise (WN) base excitation tests were conducted at key stages during the test protocol. Because of the low intensity of the ambient and WN base excitations, a quasi-linear response of the system is assumed, and the modal parameters of an equivalent linear time-invariant (LTI) model are estimated. Using the structural vibration data recorded by 28 accelerometers, three system identification methods, including two output-only (SSI-DATA and NExT-ERA) and one input-output (DSI), are used to estimate the modal properties of the BI and FB building between seismic tests. The results show that the modal properties obtained by different methods are in good agreement and that the estimated modal parameters of the building are affected by the amplitude of the excitation, environmental conditions, and structural/nonstructural damage in the structure.

KW - Base isolation

KW - Damage

KW - Full-scale specimen

KW - Nonstructural components

KW - Shake table

KW - System identification

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M3 - Conference contribution

AN - SCOPUS:84994477391

VL - 2014-January

T3 - Proceedings of the International Conference on Structural Dynamic , EURODYN

SP - 2333

EP - 2340

BT - Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014

A2 - Cunha, A.

A2 - Ribeiro, P.

A2 - Caetano, E.

A2 - Muller, G.

PB - European Association for Structural Dynamics

T2 - 9th International Conference on Structural Dynamics, EURODYN 2014

Y2 - 30 June 2014 through 2 July 2014

ER -

Astroza R, Ebrahimian H, Conte JP, Restrepo JI, Hutchinson TC. System identification of a full-scale five-story reinforced concrete building tested on the NEES-UCSD shake table. In Cunha A, Ribeiro P, Caetano E, Muller G, editors, Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014. Vol. 2014-January. European Association for Structural Dynamics. 2014. p. 2333-2340. (Proceedings of the International Conference on Structural Dynamic , EURODYN).

System identification of a full-scale five-story reinforced concrete building tested on the NEES-UCSD shake table

Abstract

Publication series

Conference

Bibliographical note

Keywords

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