Improving the Seismic Performance of Steel Frames under Mainshock-Aftershock Using Post-Tensioned Connections
Por:
Torres, Jose R., Bojorquez, Eden, Bojorquez, Juan, Leyva, Herian, Ruiz, Sonia E., Reyes-Salazar, Alfredo, Palemon-Arcos, Leonardo, Rivera, J. Luz, Carvajal, Joel, Reyes, Henry E.
Publicada:
1 jul 2023
Resumen:
In this study, the seismic responses of moment-resisting steel frames
(MRSFs) with welded and post-tensioned connections under 28 artificial
seismic sequences (mainshock-aftershock) are compared. For this aim, the
mainshock are scaled at different ground motion intensity levels as a
function of the spectral pseudo-acceleration corresponding to the
fundamental period of vibration of the structure Sa(T-1), whereas
different intensity levels of the aftershocks are used for a percentage
of the peak maximum acceleration of the mainshock. The seismic
performance comparison of both structural systems is computed for the
maximum, residual inter-story drift and hysteretic energy demands. The
results show that post-tensioned frames significantly reduce the
structural demands, especially in the case of residual inter-story
drifts and hysteretic energy in comparison with moment-resisting steel
frames with welded connections. The reductions in the structural
response tend to be larger as the intensity of the aftershock tends to
increase. Therefore, it is concluded that the use of post-tensioned
connections is a great alternative to mitigate the seismic response of
buildings subjected to seismic sequences.
Filiaciones:
Torres, Jose R.:
Facultad de Ingeniería Culiacán, Universidad Autónoma de Sinaloa, Culiacán de Rosales, 80040, Mexico
Univ Autonoma Sinaloa, Fac Ingn Culiacan, Culiacan De Rosales 80040, Mexico
Bojorquez, Eden:
Facultad de Ingeniería Culiacán, Universidad Autónoma de Sinaloa, Culiacán de Rosales, 80040, Mexico
Univ Autonoma Sinaloa, Fac Ingn Culiacan, Culiacan De Rosales 80040, Mexico
Bojorquez, Juan:
Facultad de Ingeniería Culiacán, Universidad Autónoma de Sinaloa, Culiacán de Rosales, 80040, Mexico
Univ Autonoma Sinaloa, Fac Ingn Culiacan, Culiacan De Rosales 80040, Mexico
Leyva, Herian:
Facultad de Ingeniería, Arquitectura y Diseño (FIAD), Universidad Autónoma de Baja California, Ensenada, 22860, Mexico
Univ Autonoma Baja Calif, Fac Ingn Arquitectura & Diseno FIAD, Ensenada 22860, Mexico
Ruiz, Sonia E.:
Instituto de Ingeniería, Universidad Nacional Autónoma de México, CU, Coyoacán, Cuidad de México, 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Ingn, Mexico City 04510, Mexico
Reyes-Salazar, Alfredo:
Facultad de Ingeniería Culiacán, Universidad Autónoma de Sinaloa, Culiacán de Rosales, 80040, Mexico
Univ Autonoma Sinaloa, Fac Ingn Culiacan, Culiacan De Rosales 80040, Mexico
Palemon-Arcos, Leonardo:
Departamento de Ingeniería Civil, Universidad Autónoma del Carmen, Cd. del Carmen, Campeche, 24180, Mexico
Univ Autonoma Carmen, Dept Ingn Civil, Campeche 24180, Mexico
Rivera, J. Luz:
Facultad de Ingeniería Culiacán, Universidad Autónoma de Sinaloa, Culiacán de Rosales, 80040, Mexico
Univ Autonoma Sinaloa, Fac Ingn Culiacan, Culiacan De Rosales 80040, Mexico
Carvajal, Joel:
Facultad de Ingeniería Culiacán, Universidad Autónoma de Sinaloa, Culiacán de Rosales, 80040, Mexico
Univ Autonoma Sinaloa, Fac Ingn Culiacan, Culiacan De Rosales 80040, Mexico
Reyes, Henry E.:
Facultad de Ingeniería Culiacán, Universidad Autónoma de Sinaloa, Culiacán de Rosales, 80040, Mexico
Univ Autonoma Sinaloa, Fac Ingn Culiacan, Culiacan De Rosales 80040, Mexico
gold, All Open Access; Gold
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