Selahattin Ersoy

Istanbul University · Faculty of Architecture

İşlevsel olarak günümüzün şartlarına uyum sağlayamayan, kültür varlığı olarak geçen tarihi yapılar, kentin hafızasında önemli rol oynarlar ancak zamanla hasar gören ve atıl hale gelen tarihi yapılara gerekli bakım ve onarımın yapılması, değişen zamanın koşullarının etkisiyle işlev kaybına uğrayan binalarda yeni işlev seçimlerinin zamanın şartlarına...

Most of the traditional houses in western Anatolia are a type of hımış (traditional timber frame) structure. Deterioration of these traditional houses is mostly due to their abandonment. Abandonment causes the structure’s load-bearing system vulnerable to environmental effects and ultimately weakens the structure against seismic loads. A case study...

A portion of Byzantine land walls from “Mevlanakapi” to “Belgradkapi”, part of Theodosian walls, is surveyed by laser scanners for recording the current condition and for identification of the damage levels towards the establishment of restoration approaches. Based on the failure mechanism of the structure and review of the earlier restorations, a...

Transformation of cities to low carbon cities is a global policy priority that attracts a wide range of actors, including policymakers, local governments, scientists as well as associated technology companies. On the other hand, the geographic, climatic, and structural variations across cities are high not only at the global level but also in sub-c...

Substations are critical components in a power system. Performance of substations during past earthquakes has not been satisfactory and many key components such as transformers and porcelain bushings have sustained significant damage. Recently, several research investigations have been conducted to better evaluate, assess, and qualify seismic perfo...

This paper presents the results of analytical and experimental studies on the use of an advanced technology for seismic rehabilitation and design of substation transformers. The isolation system, known as Friction Pendulum System (FPS), combines the concepts of sliding bearings and pendulum motion. Discussion of formulation is followed by an extens...

Substations are critical components in a power system. Performance of substations during past earthquakes has not been satisfactory and many key components such as transformers and bushings have sustained significant damage. Recently several research investigations have been conducted to better evaluate, assess, and qualify seismic performance of c...

This paper presents the design and construction of an innovative dual-purpose screen that can block headlight glare while having adequate height to deter pedestrian crossover. Glare screens are used to shield drivers from the headlights of opposing traffic, which has been shown to be detrimental when the glare is within an angle of 20°. Review of p...

ritical power system facilities, such as substations, sustained signifi- cant damage in California and Japan earthquakes and more recently during the 1999 Chi-Chi, Taiwan, and the Izmit, Turkey earthquakes. Func- tionality of electric power systems, especially in the age of information technology, is vital to maintaining the welfare of the general...

This paper focuses on assessment of seismic response of critical substation equipment and on the use of advanced technologies for rehabilitation measures. Extensive finite element analysis of transformer-bushing is performed to investigate their seismic response and to quantify the effect of transformer flexibility on bushing response. Friction Pen...