Effect of seismic sequences on behavior of mid-rise steel moment-resisting frames equipped with fluid viscous dampers

Mehmandousti, Amir Masoud Allami; Jalaeefar, Ali

doi:10.1016/j.istruc.2023.05.108

Cited by 4 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Post-tensioned steel frames with energy dissipating elements (PTDE) have been shown to be a strong option to replace MRSFs [6][7][8][9][10][11][12][13][14][15][16][17][18]. In fact, recent studies have concluded that PT-DEs perform better than MRSFs with welded connections [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Improving the Seismic Performance of Steel Frames under Mainshock–Aftershock Using Post-Tensioned Connections

et al. 2023

View full text Add to dashboard Cite

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(T1), 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.

show abstract