APPLICATION OF FUZZY LOGIC TO LIFE-CYCLE COST ANALYSIS OF HIGHWAY PAVEMENTS

Year 2019, Volume: 8 Issue: 1, 171 - 181, 28.01.2019

Muhammed Emin Cihangir Bağdatlı

https://doi.org/10.28948/ngumuh.516863

Abstract

   The determination of the optimal highway
pavement alternative is the result of a systematic decision-making process.
Life-cycle cost analysis is a suitable tool to ensure decision-making. It is
commonly used by global transportation authorities in selecting a best-fit
highway pavement alternative. However, the high data requirement of the
analysis is a significant disadvantage. This triggers the subjectivity in
decision-making. Therefore, a new method is needed to overcome this problem. In
this study, fuzzy logic technique was used because of its popularity in
successful solutions. Vertex and DSW methods, which are fuzzy logic extension
principles, were applied in life-cycle cost analysis of highway pavements. The
application steps of the methods are given in detail in the study. As a result,
the applicability of fuzzy logic in life-cycle cost analysis of highway
pavements has been revealed.

Keywords

Fuzzy logic, DSW algorithm, Highway pavements, Life-cycle cost analysis, Vertex method

KARAYOLU ÜSTYAPILARININ ÖMÜR DÖNGÜ MALİYET ANALİZİNDE BULANIK MANTIĞIN UYGULANMASI

Abstract

   Karayolu üstyapı alternatifleri içinden en
uygun olanın belirlenmesi sistematik bir karar verme sürecinin sonucudur. Ömür
döngü maliyet analizi karar vermeyi temin eden uygun bir araçtır. Bu araç,
karayolu üstyapı alternatiflerinin belirlenmesinde ulaştırma otoriteleri
tarafından yaygın olarak kullanılmaktadır. Ancak analizin yüksek veri
gereksinimi, doğru karar vermenin temin edilmesinde önemli bir dezavantaj
oluşturmaktadır. Bu durum karar vericileri, bilimsel yaklaşımlardan
uzaklaştırarak öznel kararlar almaya zorlamaktadır. Söz konusu sorunun
giderilmesi için yeni bir yönteme ihtiyaç duyulmaktadır. Mühendislik
uygulamalarındaki başarılı çözümlemelerinden dolayı bu çalışmada bulanık mantık
tekniği kullanılmıştır. Problemin çözümüne ilişkin bulanık mantık uzantı
prensiplerinden Vertex ve DSW yöntemi, karayolu üstyapıları ömür döngü maliyet
analizinde uygulanmıştır. Çalışmada yöntemlerin uygulama adımları ayrıntılı
olarak verilmiştir. Sonuç olarak bulanık mantığın karayolu üstyapıları karar
verme süreçlerinden biri olan ömür döngü maliyet analizinde kullanılabilirliği
ortaya konulmuştur.

Keywords

Bulanık mantık, DSW algoritması, Karayolu üstyapıları, Ömür döngü maliyet analizi, Vertex yöntemi

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