TY - GEN
T1 - Seismic redesign of steel frames by local insertion of dissipating devices
AU - Mulas, M.G.
AU - Archelaschi, M.
AU - Martinez-Rueda, Juan
PY - 2000/8
Y1 - 2000/8
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.
M3 - Conference contribution with ISSN or ISBN
SN - 9058091309
T3 - Third International Conference STESSA2000
SP - 411
EP - 418
BT - Proceeings of the Third International Conference STESSA
A2 - Mazzolani, F.M.
A2 - Tremblay, R.
PB - A.A.Balkema
CY - Rotterdam
T2 - Proceeings of the Third International Conference STESSA
Y2 - 1 August 2000
ER -