Ry-μ-Tn relations for seismically isolated structures

Anastasios Tsiavos; Michalis F. Vassiliou; Kevin R. Mackie; Bozidar Stojadinovic

R_y-μ-T_n relations for seismically isolated structures

Anastasios Tsiavos
, Michalis F. Vassiliou
, Kevin R. Mackie
, Bozidar Stojadinovic

Research output: Contribution to conference › Conference Paper › peer-review

6 Citations (Scopus)

Abstract

The relations between the strength reduction factor Ry, the displacement ductility μ and the vibration period of the structure Tn have been extensively studied for fixed-base structures by numerous researchers in the past. This project aims at identifying similar relations for base-isolated structures. The investigation is conducted using a two-degree-offreedom model of a base-isolated structure. The hysteretic behavior of the base isolation devices and the isolated superstructure is simulated in Matlab and OpenSees using a Bouc-Wen model. The results of the observed response are verified through the excitation of the isolated structure by a large number of recorded ground motions. These motions cover a wide range of ground motion types, magnitudes and distances. The effects of base isolation and superstructure design parameters, such as stiffness and strength, are quantified through parametric studies. The resulting R_y-μ-Tn relationship for inelastic seismically isolated structures is based on the statistical processing of the inelastic response data of the isolated superstructure.

Original language	English
Pages	1771-1781
Number of pages	11
Publication status	Published - 1 Jan 2013
Event	4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013 - Kos Island, Greece Duration: 12 Jun 2013 → 14 Jun 2013

Conference

Conference	4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013
Country/Territory	Greece
City	Kos Island
Period	12/06/13 → 14/06/13

Keywords

Extreme hazards
Inelastic isolated structures
Resilience
Seismic isolation

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Persistent link

Cite this

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title = "Ry-μ-Tn relations for seismically isolated structures",

abstract = "The relations between the strength reduction factor Ry, the displacement ductility μ and the vibration period of the structure Tn have been extensively studied for fixed-base structures by numerous researchers in the past. This project aims at identifying similar relations for base-isolated structures. The investigation is conducted using a two-degree-offreedom model of a base-isolated structure. The hysteretic behavior of the base isolation devices and the isolated superstructure is simulated in Matlab and OpenSees using a Bouc-Wen model. The results of the observed response are verified through the excitation of the isolated structure by a large number of recorded ground motions. These motions cover a wide range of ground motion types, magnitudes and distances. The effects of base isolation and superstructure design parameters, such as stiffness and strength, are quantified through parametric studies. The resulting Ry-μ-Tn relationship for inelastic seismically isolated structures is based on the statistical processing of the inelastic response data of the isolated superstructure.",

keywords = "Extreme hazards, Inelastic isolated structures, Resilience, Seismic isolation",

author = "Anastasios Tsiavos and Vassiliou, \{Michalis F.\} and Mackie, \{Kevin R.\} and Bozidar Stojadinovic",

year = "2013",

month = jan,

day = "1",

language = "English",

pages = "1771--1781",

note = "4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013 ; Conference date: 12-06-2013 Through 14-06-2013",

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R_y-μ-T_n relations for seismically isolated structures. / Tsiavos, Anastasios; Vassiliou, Michalis F.; Mackie, Kevin R. et al.
2013. 1771-1781 Paper presented at 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013, Kos Island, Greece.

Research output: Contribution to conference › Conference Paper › peer-review

TY - CONF

T1 - Ry-μ-Tn relations for seismically isolated structures

AU - Tsiavos, Anastasios

AU - Vassiliou, Michalis F.

AU - Mackie, Kevin R.

AU - Stojadinovic, Bozidar

PY - 2013/1/1

Y1 - 2013/1/1

N2 - The relations between the strength reduction factor Ry, the displacement ductility μ and the vibration period of the structure Tn have been extensively studied for fixed-base structures by numerous researchers in the past. This project aims at identifying similar relations for base-isolated structures. The investigation is conducted using a two-degree-offreedom model of a base-isolated structure. The hysteretic behavior of the base isolation devices and the isolated superstructure is simulated in Matlab and OpenSees using a Bouc-Wen model. The results of the observed response are verified through the excitation of the isolated structure by a large number of recorded ground motions. These motions cover a wide range of ground motion types, magnitudes and distances. The effects of base isolation and superstructure design parameters, such as stiffness and strength, are quantified through parametric studies. The resulting Ry-μ-Tn relationship for inelastic seismically isolated structures is based on the statistical processing of the inelastic response data of the isolated superstructure.

AB - The relations between the strength reduction factor Ry, the displacement ductility μ and the vibration period of the structure Tn have been extensively studied for fixed-base structures by numerous researchers in the past. This project aims at identifying similar relations for base-isolated structures. The investigation is conducted using a two-degree-offreedom model of a base-isolated structure. The hysteretic behavior of the base isolation devices and the isolated superstructure is simulated in Matlab and OpenSees using a Bouc-Wen model. The results of the observed response are verified through the excitation of the isolated structure by a large number of recorded ground motions. These motions cover a wide range of ground motion types, magnitudes and distances. The effects of base isolation and superstructure design parameters, such as stiffness and strength, are quantified through parametric studies. The resulting Ry-μ-Tn relationship for inelastic seismically isolated structures is based on the statistical processing of the inelastic response data of the isolated superstructure.

KW - Extreme hazards

KW - Inelastic isolated structures

KW - Resilience

KW - Seismic isolation

UR - https://www.scopus.com/pages/publications/84898978741

M3 - Conference Paper

AN - SCOPUS:84898978741

SP - 1771

EP - 1781

T2 - 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013

Y2 - 12 June 2013 through 14 June 2013

ER -