Reference Type:  Journal Article
Record Number: 1
Author: T, Tugrul
Year: 2019
Title: DESIGN OPTIMIZATION OF TUBULAR LATTICE GIRDERS
Journal: Advanced Steel Construction 
Volume: 15
Issue: 3
Pages: 274–287
Date: Sep
Type of Article: Article
Short Title: DESIGN OPTIMIZATION OF TUBULAR LATTICE GIRDERS
Alternate Journal: Adv. Steel Constr.
ISSN: 1816-112X
DOI: 10.18057/IJASC.2019.15.3.8
Keywords: Multi-objective optimization
Tubular lattice girder
Pareto dominance
Genetic algorithm
Abstract: The lattice girder, members of which are constructed by use of ready profiles with tubular cross-sections, has a simple but
an effective structural framing form. In this regard, this study proposes to optimize the design of tubular lattice girders i n a
way of minimizing its entire weight and joint displacement and maximizing its load-carrying capacity considering the design
codes of API RP2A-LRFD. As an optimization tool, a multi-objective optimization methodology named pareto archived
genetic algorithm (PAGA) was utilized. The search capability of PAGA was improved by involving a designer module for
automatically creation of a lattice girder form. The improved PAGA has a big responsibility of increasing the convergence
degree of optimal designs against the stability problem. Furthermore, the content of this study is enriched by evaluating the
computing efficiency of PAGA with respect to several multi-objective optimization algorithms. Consequently, the improved
PAGA achieves to explore the optimal lattice girder designs with the higher convergence, diversity and capacity degr ees.
Therefore, the proposed optimum lattice girder design tool is recommended for the designers due to its capability of
obtaining a wide range of promising designs.
Notes: Times Cited: 0
Cited Reference Count: 42
Author Address: Tugrul Talaslioglu
Department of Civil Engineering, Osmaniye Korkut Ata University, 80000, Osmaniye, Turkey
* (Corresponding author: E-mail: ttalaslioglu@osmaniye.edu.tr, talaslioglu@cu.edu.tr)
Language: English