In this study the seismic performance of staggered truss system
(STS) structures with and without vierendeel panels retrofitted
with various schemes such as adding interior columns, vertical
cables, end braces, and buckling-restrained braces (BRB).
Pushover analyses were carried out to estimate the nonlinear
load–displacement relationship, and the probabilities of reaching
four damage states were obtained from incremental dynamic
analysis results of 44 earthquake records.
The analysis results showed that the prototype STS structures
had enough strength but limited ductility, and that the seismic
performance of the STS could be enhanced with the proposed
retrofit schemes. The seismic performance of the STS with vierendeel
panels could be greatly increased by installing interior
columns. The use of end bracing and vertical cable also turned
out to be somewhat effective in enhancing strength and ductility
of the STS with vierendeel panels, especially in the Collapse
damage state. It was also observed that when vertical cables were
In this study the seismic performance of staggered truss system(STS) structures with and without vierendeel panels retrofittedwith various schemes such as adding interior columns, verticalcables, end braces, and buckling-restrained braces (BRB).Pushover analyses were carried out to estimate the nonlinearload–displacement relationship, and the probabilities of reachingfour damage states were obtained from incremental dynamicanalysis results of 44 earthquake records.The analysis results showed that the prototype STS structureshad enough strength but limited ductility, and that the seismicperformance of the STS could be enhanced with the proposedretrofit schemes. The seismic performance of the STS with vierendeelpanels could be greatly increased by installing interiorcolumns. The use of end bracing and vertical cable also turnedout to be somewhat effective in enhancing strength and ductilityof the STS with vierendeel panels, especially in the Collapsedamage state. It was also observed that when vertical cables were
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