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

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

References

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