Natural Seismic Protection Properties of Historical “Walled Obelisk” Structure in Istanbul: Modeling-Numerical Approach

Sertaç TUHTA

doi:https://doi.org/10.18038/aubtda.411654

Makale detayları

Natural Seismic Protection Properties of Historical “Walled Obelisk” Structure in Istanbul: Modeling-Numerical Approach

Yazarlar:

Sertaç TUHTA

Yayıncı:

Eskisehir Technical University

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Eskişehir Technical University Journal of Science and Technology A - Applied Sciences and Engineering 2018 Vol.19 Issue 4, pp.805-814

Belge Tipi:

Makale

Yayın Tarihi:

12/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000417017

pISSN:

2667-4211

DOI:

https://doi.org/10.18038/aubtda.411654

Özet:

 

The “Walled Obelisk” is a 32.77-meter high, 2x2 meter mean square, rough-cut limestone monument that is becoming thinner to the four-sided hill. This monument is in a very sensitive seismic region of the World-Istanbul and remains intact from the time of its construction (approximately tenth century) to the present despite all seismic activity during that time. The current study extracts and investigates a mathematical model of the monument, which reveals that support of the structure incorporates a “natural seismic isolator” that demonstrates behavior similar to current used lead-core rubber-bearings isolator (LRB). The total height of the “natural seismic isolator” is 3.44 m. and consists of three–steps of rough-cut limestone and a massive marble stone that forms four sliding surfaces bonded with Horasan mortar. The components of the “natural seismic isolator” form four sliding surfaces and appear to function similar to LRB’s combined layers of steel plates and hard rubber. The massive marble stone appears to function like the lead cylinder core of the LRB. The “natural seismic isolator” demonstrates fully plastic behavior and differs from the LRB by maintaining the monument’s upper part in equilibrium during earthquake excitation, which also varies near zero equilibrium. During this study’s comparison of the isolator’s use of the expression, “similar” is frequent used in this meaning, and the comparison uses a fixed base model of the monument that cannot reciprocate during recovery from earthquakes over the 1000-year history. The proposed model of “natural seismic isolation” from historical experience (for this monument, 1000 years), suggests that the easily constructed natural isolator requires no special maintenance, and is suitable for modern structures in seismic regions.

Makale detayları

Natural Seismic Protection Properties of Historical “Walled Obelisk” Structure in Istanbul: Modeling-Numerical Approach

Yazarlar: Sertaç TUHTA

Yayıncı: Eskisehir Technical University

Ana Başlıklar: Uygulamalı fizik

Dergi: Eskişehir Technical University Journal of Science and Technology A - Applied Sciences and Engineering 2018 Vol.19 Issue 4, pp.805-814

Belge Tipi: Makale

Yayın Tarihi: 12/2018

Belge Dili: İngilizce

Document ID (Org No.): 2000417017

pISSN: 2667-4211

DOI: https://doi.org/10.18038/aubtda.411654

Sayı

Yazarlar:

Sertaç TUHTA

Yayıncı:

Eskisehir Technical University

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Eskişehir Technical University Journal of Science and Technology A - Applied Sciences and Engineering 2018 Vol.19 Issue 4, pp.805-814

Belge Tipi:

Makale

Yayın Tarihi:

12/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000417017

pISSN:

2667-4211

DOI:

https://doi.org/10.18038/aubtda.411654