Torsional response of structure with mass eccentricity

Helen Wu

Torsional response of structure with mass eccentricity

Helen Wu

School of Engineering, Design & Built Environment

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

2 Citations (Scopus)

Abstract

Base isolation is found effective in reducing torsional response of structures with mass eccentricity when subjected to earthquakes. In this study, dynamic characteristics of an eccentric five-storey benchmark model, isolated with laminated rubber bearings (LRB) and lead core rubber bearings (LCRB), were examined using a shaker table and four different ground motions. The earthquake-resistant performance of LRB and LCRB isolators was evaluated. It was observed that both transverse and torsional responses were significantly reduced with the addition of an LRB or LCRB isolated system regardless of ground motion input. However, the LRB was identified to be more effective than LCRB in reducing relative torsional angle, model relative displacements, accelerations and angular accelerations, and therefore, provided a better protection of the superstructure and its contents.

Original language	English
Title of host publication	Rotating Machinery, Structural Health Monitoring, Shock and Vibration, Volume 5: Proceedings of the 29th IMAC, a Conference on Structural Dynamics, 2011
Publisher	Springer
Pages	333-339
Number of pages	7
ISBN (Print)	9781441994271
Publication status	Published - 2011
Event	International Modal Analysis Conference - Duration: 31 Jan 2011 → …

Publication series

Name
ISSN (Print)	2191-5644

Conference

Conference	International Modal Analysis Conference
Period	31/01/11 → …

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 11 Sustainable Cities and Communities

Cite this

@inproceedings{804d5527a0224d509c8a80f3a5f15d95,

title = "Torsional response of structure with mass eccentricity",

abstract = "Base isolation is found effective in reducing torsional response of structures with mass eccentricity when subjected to earthquakes. In this study, dynamic characteristics of an eccentric five-storey benchmark model, isolated with laminated rubber bearings (LRB) and lead core rubber bearings (LCRB), were examined using a shaker table and four different ground motions. The earthquake-resistant performance of LRB and LCRB isolators was evaluated. It was observed that both transverse and torsional responses were significantly reduced with the addition of an LRB or LCRB isolated system regardless of ground motion input. However, the LRB was identified to be more effective than LCRB in reducing relative torsional angle, model relative displacements, accelerations and angular accelerations, and therefore, provided a better protection of the superstructure and its contents.",

author = "Helen Wu",

year = "2011",

language = "English",

isbn = "9781441994271",

publisher = "Springer",

pages = "333--339",

booktitle = "Rotating Machinery, Structural Health Monitoring, Shock and Vibration, Volume 5: Proceedings of the 29th IMAC, a Conference on Structural Dynamics, 2011",

note = "International Modal Analysis Conference ; Conference date: 31-01-2011",

}

TY - GEN

T1 - Torsional response of structure with mass eccentricity

AU - Wu, Helen

PY - 2011

Y1 - 2011

N2 - Base isolation is found effective in reducing torsional response of structures with mass eccentricity when subjected to earthquakes. In this study, dynamic characteristics of an eccentric five-storey benchmark model, isolated with laminated rubber bearings (LRB) and lead core rubber bearings (LCRB), were examined using a shaker table and four different ground motions. The earthquake-resistant performance of LRB and LCRB isolators was evaluated. It was observed that both transverse and torsional responses were significantly reduced with the addition of an LRB or LCRB isolated system regardless of ground motion input. However, the LRB was identified to be more effective than LCRB in reducing relative torsional angle, model relative displacements, accelerations and angular accelerations, and therefore, provided a better protection of the superstructure and its contents.

AB - Base isolation is found effective in reducing torsional response of structures with mass eccentricity when subjected to earthquakes. In this study, dynamic characteristics of an eccentric five-storey benchmark model, isolated with laminated rubber bearings (LRB) and lead core rubber bearings (LCRB), were examined using a shaker table and four different ground motions. The earthquake-resistant performance of LRB and LCRB isolators was evaluated. It was observed that both transverse and torsional responses were significantly reduced with the addition of an LRB or LCRB isolated system regardless of ground motion input. However, the LRB was identified to be more effective than LCRB in reducing relative torsional angle, model relative displacements, accelerations and angular accelerations, and therefore, provided a better protection of the superstructure and its contents.

UR - http://handle.uws.edu.au:8081/1959.7/560748

M3 - Conference Paper

SN - 9781441994271

SP - 333

EP - 339

BT - Rotating Machinery, Structural Health Monitoring, Shock and Vibration, Volume 5: Proceedings of the 29th IMAC, a Conference on Structural Dynamics, 2011

PB - Springer

T2 - International Modal Analysis Conference

Y2 - 31 January 2011

ER -

Torsional response of structure with mass eccentricity

Abstract

Publication series

Conference

UN SDGs

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