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, vol.25, no.1, pp.17-26, 2007 (ESCI) identifier

Abstract

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.