Seismic redesign of steel frames by local insertion of dissipating devices

M.G. Mulas, M. Archelaschi, Juan Martinez-Rueda

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBN

Abstract

The possibility of extending to steel moment resisting frames a retrofitting technique, previously developed for RC structures, is investigated in this work. This technique is based on the incorpo¬ration of energy dissipating devices around the regions where inelastic behaviour due to a strong earthquake is expected. This extension, however, is not straightforward, due to the deeply different nonlinear behaviour of steel and RC members under cyclic flexure. Therefore, in a first step, a numerically efficient analytical beam model has been developed, to represent the nonlinear behaviour of the devices, and has been implemented in the computer code STEFAN for the nonlinear analysis of steel plane frames, which adopts realistic models for both beam elements and joint panel zones. Secondly, making use of the code STEFAN, an 8-story, 5-bay frame, designed according to Eurocodes 3 and 8 prescriptions, has been analysed, both in its original and redesigned state. The results of the nonlinear analyses confirm the positive effects of dissipating devices for the case at study.
Original languageEnglish
Title of host publicationProceeings of the Third International Conference STESSA
EditorsF.M. Mazzolani, R. Tremblay
Place of PublicationRotterdam
PublisherA.A.Balkema
Pages411-418
Number of pages8
ISBN (Print)9058091309
Publication statusPublished - Aug 2000
EventProceeings of the Third International Conference STESSA - Montreal, Canada, 21-24 August, 2000
Duration: 1 Aug 2000 → …

Publication series

NameThird International Conference STESSA2000

Conference

ConferenceProceeings of the Third International Conference STESSA
Period1/08/00 → …

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Steel
Retrofitting
Nonlinear analysis
Earthquakes

Cite this

Mulas, M. G., Archelaschi, M., & Martinez-Rueda, J. (2000). Seismic redesign of steel frames by local insertion of dissipating devices. In F. M. Mazzolani, & R. Tremblay (Eds.), Proceeings of the Third International Conference STESSA (pp. 411-418). (Third International Conference STESSA2000). Rotterdam: A.A.Balkema.
Mulas, M.G. ; Archelaschi, M. ; Martinez-Rueda, Juan. / Seismic redesign of steel frames by local insertion of dissipating devices. Proceeings of the Third International Conference STESSA. editor / F.M. Mazzolani ; R. Tremblay. Rotterdam : A.A.Balkema, 2000. pp. 411-418 (Third International Conference STESSA2000).
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title = "Seismic redesign of steel frames by local insertion of dissipating devices",
abstract = "The possibility of extending to steel moment resisting frames a retrofitting technique, previously developed for RC structures, is investigated in this work. This technique is based on the incorpo¬ration of energy dissipating devices around the regions where inelastic behaviour due to a strong earthquake is expected. This extension, however, is not straightforward, due to the deeply different nonlinear behaviour of steel and RC members under cyclic flexure. Therefore, in a first step, a numerically efficient analytical beam model has been developed, to represent the nonlinear behaviour of the devices, and has been implemented in the computer code STEFAN for the nonlinear analysis of steel plane frames, which adopts realistic models for both beam elements and joint panel zones. Secondly, making use of the code STEFAN, an 8-story, 5-bay frame, designed according to Eurocodes 3 and 8 prescriptions, has been analysed, both in its original and redesigned state. The results of the nonlinear analyses confirm the positive effects of dissipating devices for the case at study.",
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Mulas, MG, Archelaschi, M & Martinez-Rueda, J 2000, Seismic redesign of steel frames by local insertion of dissipating devices. in FM Mazzolani & R Tremblay (eds), Proceeings of the Third International Conference STESSA. Third International Conference STESSA2000, A.A.Balkema, Rotterdam, pp. 411-418, Proceeings of the Third International Conference STESSA, 1/08/00.

Seismic redesign of steel frames by local insertion of dissipating devices. / Mulas, M.G.; Archelaschi, M.; Martinez-Rueda, Juan.

Proceeings of the Third International Conference STESSA. ed. / F.M. Mazzolani; R. Tremblay. Rotterdam : A.A.Balkema, 2000. p. 411-418 (Third International Conference STESSA2000).

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBN

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T1 - Seismic redesign of steel frames by local insertion of dissipating devices

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PY - 2000/8

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N2 - The possibility of extending to steel moment resisting frames a retrofitting technique, previously developed for RC structures, is investigated in this work. This technique is based on the incorpo¬ration of energy dissipating devices around the regions where inelastic behaviour due to a strong earthquake is expected. This extension, however, is not straightforward, due to the deeply different nonlinear behaviour of steel and RC members under cyclic flexure. Therefore, in a first step, a numerically efficient analytical beam model has been developed, to represent the nonlinear behaviour of the devices, and has been implemented in the computer code STEFAN for the nonlinear analysis of steel plane frames, which adopts realistic models for both beam elements and joint panel zones. Secondly, making use of the code STEFAN, an 8-story, 5-bay frame, designed according to Eurocodes 3 and 8 prescriptions, has been analysed, both in its original and redesigned state. The results of the nonlinear analyses confirm the positive effects of dissipating devices for the case at study.

AB - The possibility of extending to steel moment resisting frames a retrofitting technique, previously developed for RC structures, is investigated in this work. This technique is based on the incorpo¬ration of energy dissipating devices around the regions where inelastic behaviour due to a strong earthquake is expected. This extension, however, is not straightforward, due to the deeply different nonlinear behaviour of steel and RC members under cyclic flexure. Therefore, in a first step, a numerically efficient analytical beam model has been developed, to represent the nonlinear behaviour of the devices, and has been implemented in the computer code STEFAN for the nonlinear analysis of steel plane frames, which adopts realistic models for both beam elements and joint panel zones. Secondly, making use of the code STEFAN, an 8-story, 5-bay frame, designed according to Eurocodes 3 and 8 prescriptions, has been analysed, both in its original and redesigned state. The results of the nonlinear analyses confirm the positive effects of dissipating devices for the case at study.

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Mulas MG, Archelaschi M, Martinez-Rueda J. Seismic redesign of steel frames by local insertion of dissipating devices. In Mazzolani FM, Tremblay R, editors, Proceeings of the Third International Conference STESSA. Rotterdam: A.A.Balkema. 2000. p. 411-418. (Third International Conference STESSA2000).