BASE ISOLATION APPLICATIONS IN TURKEY

2018-06-25
As an earthquake prone country, in Turkey Seismic Base Isolation applications increase tremendously. The main reason of this increase is the memorandum released by Ministry of Health by which application of Seismic Base Isolation becomes obligatory for the Hospitals with a bed capacity higher than 100. After the initiation of using seismic isolators on the hospitals, the subject becomes more known and usage of seismic isolations extend to data centres and other communication buildings. Beside the seismic base isolation application, in the new draft Turkish Earthquake Code which is released in 2017 a chapter is devoted to seismic base isolation. Among the two isolation systems typically used in Turkey, Friction Pendulum Systems (FPS) with double sliding surfaces are more common. There are some Lead Rubber Bearing (LRB) systems as well. So far, there are some seismically isolated hospitals which are operating, among which one was subjected to two earthquakes in 2017 with magnitudes 5.3 and 6.2. These earthquakes did not affect the hospital at all. Unfortunately, there weren't any monitoring systems installed. The hospital which was subjected to the earthquakes is isolated by LRB system. In one of the Hospital Buildings which becomes operational, seismic base isolation alone was not enough to satisfy the conditions stated by the memorandum of Ministry of Health so a bracing system was used to decrease the floor accelerations. In this study, the details of five hospital buildings which are seismically isolated by using FPS or LRB are discussed. So far in one of them a monitoring system has been installed. © NCEE 2018.All rights reserved.
Citation Formats
U. Akyüz and A. Yakut, “BASE ISOLATION APPLICATIONS IN TURKEY,” presented at the BASE ISOLATION APPLICATIONS IN TURKEY”, Elevent U.S. National Conference on Earthquake Engineering, Los-Angeles, Şili, 25 - 29 Haziran 2018, Los-Angeles, Şili, 2018, Accessed: 00, 2021. [Online]. Available: https://11ncee.org/.