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Quantifying panel zone effect on deflection amplification factor
Author(s) -
Mohammadi Majid,
Kordbagh Bahram
Publication year - 2017
Publication title -
the structural design of tall and special buildings
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 43
eISSN - 1541-7808
pISSN - 1541-7794
DOI - 10.1002/tal.1446
Subject(s) - deflection (physics) , moment (physics) , panel data , geology , structural engineering , engineering , mathematics , econometrics , physics , optics , classical mechanics
Summary Drift is a dominant feature in tall‐building design and can dictate the selection of structural systems. Because a reliable estimate of actual drifts is crucial for controlling structural damage, estimating drift considering intricate details seems noteworthy. In order to estimate story drifts during massive quakes, seismic design provisions generally specify a deflection amplification factor ( C d ) to amplify elastic design drifts. In most of these codes, the amount of C d is calculated from line‐element models without considering panel zone effects, despite the panel zone intensifying the story drift considerably. Therefore, the effect of panel zone on the story drift and C d has been investigated in the current paper. Because C d is independent of the number of stories, 4‐story frames, as benchmarks for special steel moment frames, with different thicknesses of the panel zone, are used. The effect of panel zone is provided as a correction factor for C d . The results show that the panel zone should be considered in the analytical models; otherwise, the story drift will be underestimated up to 35%. Finally, a relation has been derived to consider panel zone effects on C d , as a function of the panel zone thickness.