The Open Civil Engineering Journal

ISSN: 1874-1495 ― Volume 13, 2019

Installation and Maintenance Principles of Seismic Isolators: Erzurum Health Campus

Merve Sağıroğlu1, Mahyar Maali2, Abdulkadir Cüneyt Aydın3, *
1 Erzurum Teknik Üniversitesi, Mühendislik Mimarlık Fakültesi, İnşaat Mühendisliği, Erzurum, Turkey
2 Gençler Metal A.Ş., 1. Organize Sanayi Bölgesi, Erzurum, Turkey
3 Atatürk Üniversitesi, Mühendislik Fakültesi, İnşaat Mühendisliği, Erzurum, Turkey



The objective of isolation is to reduce the seismic forces transmitted through the structure using active and/or passive insulation systems.Seismic isolators, which are passive insulation systems and are placed between the foundation of the structure and the structure, are discussed throughout this study. Isolators consist of rubber layers that have horizontal flexibility, steel layers that increase rigidity and a lead or ball core, which increases vertical stiffness. Installation and maintenance of seismic isolators require great care in order not to exceed the displacements/section forces envisaged at the design of the structure during the earthquake.


Installation and maintenance principles of the friction pendulum type isolators used in Erzurum Health Campus (hospital) are presented throughout this study. While the seismic isolators are anchoraged to directly concrete in the general application, they are placed between two steel plates of type S355J2 in this application, because of cold-weather conditions. To evaluate this condition, it is investigated the models with and without steel plate and compared to each other.


The models with and without steel plate were formed using finite-element method to compare the stress distributions on the isolator.


The results demonstrated that the model with steel plates occur the uniform stress through surface and keep under control deformation of cross-section in the reinforced concrete.

Keywords: Seismic isolator, Finite element, Installation principles, Pendulum, Passive insulation, Steel plates.

Article Information

Identifiers and Pagination:

Year: 2018
Volume: 12
First Page: 83
Last Page: 95
Publisher Id: TOCIEJ-12-83
DOI: 10.2174/1874149501812010083

Article History:

Received Date: 26/03/2018
Revision Received Date: 18/04/2018
Acceptance Date: 19/04/2018
Electronic publication date: 14/5/2018
Collection year: 2018

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© 2018 Sağıroğlu et al..

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: ( This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Atatürk Üniversitesi, Mühendislik Fakültesi, İnşaat Mühendisliği, Erzurum, Turkey, Tel: +90442 2314781; Fax: +9044223149I0; E-mails:;


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