6 - Optimization techniques for structural design of cold-formed steel structures

Abstract

This chapter covers optimization problems and algorithms in the design of cold-formed steel (CFS) structures. Dimension and shape optimization of CFS members and layout optimization of CFS framed structures are major topics. As an introduction, a brief review of problem formulation and solution techniques in past research is presented in Section 6.1. Details of optimization algorithms, including gradient-based, stochastic search, artificial neural network, and ant colony optimization, are discussed in Section 6.2. Section 6.3 illustrates research outcomes of member level shape optimization and structural layout optimization of CFS framing. In Section 6.4, research needs and future work on multilevel and topology optimization of CFS structures are addressed.