DESIGN AND RELIABILITY BASED OPTIMIZATION OF A 2D ARCH BRIDGE

TOĞAN V., DALOĞLU A.

SIGMA JOURNAL OF ENGINEERING AND NATURAL SCIENCES-SIGMA MUHENDISLIK VE FEN BILIMLERI DERGISI, cilt.25, sa.1, ss.17-26, 2007 (ESCI) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 25 Sayı: 1
  • Basım Tarihi: 2007
  • Dergi Adı: SIGMA JOURNAL OF ENGINEERING AND NATURAL SCIENCES-SIGMA MUHENDISLIK VE FEN BILIMLERI DERGISI
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI)
  • Sayfa Sayıları: ss.17-26
  • Anahtar Kelimeler: Reliability, Reliability index, structural optimization, reliability based design optimization, failure probability
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

The aim of this work is to design and optimize a 2D Arch Bridge with reliability based optimization concept that is commonly used in transportation. After the arch bridge is modeled according to its original layout, the formulation of reliability-based optimization and other optimization techniques used in the work are presented. Then the bridge is optimized using various optimization methods under the allowable stress failure probability and different values of variation coefficient of random variables. Finally shape and size optimization of 2D arch bridge is performed. It is concluded that the reliability based optimization concept offers an optimum design balancing both the weight and the safety better than the deterministic ones.