Effects of Using Different Ground Motion Scaling Methods on the Estimation of Seismic Behavior of Tunnel-Form Buildings

Tozlu İ., Börekçi M.

2nd International Conference on Engineering and Applied Natural Sciences (ICEANS 2022), Konya, Turkey, 15 - 18 October 2022, pp.177

  • Publication Type: Conference Paper / Summary Text
  • City: Konya
  • Country: Turkey
  • Page Numbers: pp.177
  • Yıldız Technical University Affiliated: Yes


Generally preferred RC frame systems, due to their construction methods, are insufficient to meet the rapidly increasing housing demand economically without compromising safety. Tunnel Formwork Systems (TFSs) have started to be used frequently as a reason for their fast manufacturing, economical solution, and earthquake reliability. Since TFSs have a considerable lateral stiffness, they can be preferred especially in buildings to be built in high seismicity regions. For this reason, the design of TFSs and the understanding of their earthquake behavior become extremely important. It is assumed that the "Non-Linear Time History Analysis" (NLTHA), which is a dynamic analysis method, gives closer results to the real behavior. According to the “Turkish Seismic Code for Buildings (TSCB) 2018”, earthquake records should be scaled to the design earthquake and TSCB 2018 suggests two scaling methods as "Simple Scaling (SS)" and "Spectrum Matching (SM)". In this study, the effects of considering different scaling methods defined in TSCB on the seismic behavior of TFSs have been investigated. For this purpose, an analytical model of a six-story TFS building has been prepared in SAP2000 with a “nonlinear shell-layered element” and NLTHA has been performed. Scaling methods have been compared in terms of the top displacements and base-shears of the building. According to the results of this study, the SS method generally gives more conservative estimations than the ones obtained for SM. However, looking at the mean values, it can be said that this difference is insignificant in terms of overall behavior.