Akademik Veri Yönetim Sistemi
Uludağ Üniversitesi Mühendislik Fakültesi Dergisi, cilt.25, sa.1, 2020 (Hakemli Dergi)
In this study, the performances of 120 precast
factory buildings consisting of five different types in an industrial area in
Istanbul, Turkey are examined before and after the applications of retrofit
methods through nonlinear time history analyses. The factory buildings were
constructed and became operational before the 1999 Kocaeli earthquake.
Following the earthquake, they were operationally safe, however, after the
evaluation according to the 1998 Turkish Earthquake Code (TEC), most of the connections
were found to be inadequate. The buildings were retrofitted by using bolted steel
plates in the connection regions and diagonal steel braces in 2005. A detailed
finite element model of the connection was developed before and after the
retrofit methods and the behavior of the region was implemented in the
three-dimensional models of the structures. The buildings were analyzed
according to the Turkish Earthquake Code 2007. The number of damaged beams by the
TEC-2007 was higher than the rate of damaged beams per the FEMA-356. In
three-dimensional performance analysis of buildings, the importance of
examination of connection regions and implementing the results to the full
building model were emphasized. The performance of the building were increased
by reducing the distance between the plane frames in the longitudinal direction
and the beam length in the transverse direction.