Investigation on limitation of reduced relative storey drifts according to TEC 2007

Year 2018, Volume: 2 Issue: 3, 223 - 228, 15.12.2018

Muhammet Erdem , Murat Bikçe

Abstract

During the earthquake motion,
limitation of storey drifts of is important. Maximum storey drifts for the
structures to be constructed in our country has been restricted by Turkish
Earthquake Code (TEC) which is in force since 2007, according to the provision
of relative storey drift and A1, A2 irregularity factors. In the earthquake
code which is published as draft in 2016 and is not in force yet, it has been
planning to restrict the storey drifts for with and without gap conditions of
infill wall - frame connections. First of all, it is aimed to investigate the
limits of maximum reduced relative storey drift under specified conditions
according to TEC 2007. In this study, the maximum values of allowable reduced
storey drifts were specified separately for reinforced concrete buildings which
have 2.75m – 4.25m storey height interval, according to limitations specified
in section of TEC 2007 that is “Calculation and Limitation of Effective
Relative Storey Drifts” for each of the Structural System Behavior Factors (R).
Additionally, as an example, maximum relative story drifts have calculated
according to “A1- Torsional Irregularity” section of TEC 2007 by using the
relative storey drifts which belongs to a building from literature, and for
this building, maximum relative storey drifts has calculated according to “B2-
Interstorey Stiffness Irregularity” section of TEC 2007 for variable
interstorey heights. At the end of the study, maximum values of relative storey
drifts in the floor have revealed according to average storey drifts and storey
height ratios.

Keywords

Irregularity factors, Storey drift limitations, TEC 2007

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