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Seismic rehabilitation of semi-rigid steel framed buildings—A case study

Shakib, H. / Dardaei Joghan, S. / Pirizadeh, M. / Moghaddasi Musavi, A.

Abstract This paper presents the seismic vulnerability and rehabilitation of a steel building with semi-rigid connections in Tehran. This 19-storey building with an asymmetric plan was constructed 30 years ago in three blocks. The qualitative vulnerability of the building was evaluated in the first step of the study, indicating its high seismic vulnerability. In the next step of the study, the quantitative vulnerability of the structure was investigated. The results show that the building was strong enough to resist gravity loads but the strength was not adequate for seismic loads. Finally, three seismic retrofitting methods consisting of concrete shear wall, steel shear wall, and steel bracing were proposed. The comparison of the three retrofitting alternatives in terms of architecture, implementation, and seismic performance showed the superiority of using the concrete shear walls over the two other alternatives.

Research highlights ► Seismic vulnerability of a steel building with semi-rigid connections is evaluated. ► Three methods for rehabilitation of existing building are proposed and compared. ► Comparison shows that concrete shear wall plan is the best choice.

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Seismic rehabilitation of semi-rigid steel framed buildings—A case study

Shakib, H. / Dardaei Joghan, S. / Pirizadeh, M. / Moghaddasi Musavi, A.

Abstract This paper presents the seismic vulnerability and rehabilitation of a steel building with semi-rigid connections in Tehran. This 19-storey building with an asymmetric plan was constructed 30 years ago in three blocks. The qualitative vulnerability of the building was evaluated in the first step of the study, indicating its high seismic vulnerability. In the next step of the study, the quantitative vulnerability of the structure was investigated. The results show that the building was strong enough to resist gravity loads but the strength was not adequate for seismic loads. Finally, three seismic retrofitting methods consisting of concrete shear wall, steel shear wall, and steel bracing were proposed. The comparison of the three retrofitting alternatives in terms of architecture, implementation, and seismic performance showed the superiority of using the concrete shear walls over the two other alternatives.

Research highlights ► Seismic vulnerability of a steel building with semi-rigid connections is evaluated. ► Three methods for rehabilitation of existing building are proposed and compared. ► Comparison shows that concrete shear wall plan is the best choice.

Seismic rehabilitation of semi-rigid steel framed buildings—A case study

Shakib, H. / Dardaei Joghan, S. / Pirizadeh, M. / Moghaddasi Musavi, A.

Abstract This paper presents the seismic vulnerability and rehabilitation of a steel building with semi-rigid connections in Tehran. This 19-storey building with an asymmetric plan was constructed 30 years ago in three blocks. The qualitative vulnerability of the building was evaluated in the first step of the study, indicating its high seismic vulnerability. In the next step of the study, the quantitative vulnerability of the structure was investigated. The results show that the building was strong enough to resist gravity loads but the strength was not adequate for seismic loads. Finally, three seismic retrofitting methods consisting of concrete shear wall, steel shear wall, and steel bracing were proposed. The comparison of the three retrofitting alternatives in terms of architecture, implementation, and seismic performance showed the superiority of using the concrete shear walls over the two other alternatives.

Research highlights ► Seismic vulnerability of a steel building with semi-rigid connections is evaluated. ► Three methods for rehabilitation of existing building are proposed and compared. ► Comparison shows that concrete shear wall plan is the best choice.

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Document information

Title:

Seismic rehabilitation of semi-rigid steel framed buildings—A case study

Contributors:

Shakib, H. (author) / Dardaei Joghan, S. (author) / Pirizadeh, M. (author) / Moghaddasi Musavi, A. (author)

Published in:

Journal of Constructional Steel Research ; 67 ; 1042-1049

Publication date:

2011-01-03

Size:

8 pages

ISSN:

DOI:

https://doi.org/10.1016/j.jcsr.2011.01.002

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Vulnerability assessment , Rehabilitation , Semi-rigid , Steel buildings

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