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Research Article

Nonlinear Optimization of Orthotropic Steel Deck System Based on Response Surface Methodology

Table 5

Comparison of optimized structural parameters based on different optimization objectives for the single-objective optimization.

Objective

1: minimize pavement thickness2082034712080662217000
2: minimize the steel mass per unit area12614360040170004017000
3: minimize the steel and pavement mass per unit area1261936002084793517000
4: minimize the steel and pavement mass per unit area (enhance the constraints by x1 ≥ 14 mm, x2 ≥ 8 mm, x3 ≥ 12 mm, x4 ≤ 3200 mm, and the others are the same as the constraints list below)1481832002075793417000

Constraints: , , , and the value ranges shown in Table 1.