Optimization Design for Beam and Column of Steel Structure Residence

Abstract

The sequential quadratic programming method is a kind of effective approach of optimization. In this paper it is used to reduce the steel consumption of the steel structure residence. Steel consumption of H-section steel beams and square steel tubular columns is taken as objective function, which has relatively larger proportion than others. Design variables are the beam height, web thickness, flange width, flange thickness and the square steel tubular column length. The strength, stiffness and stability of the steel beam and the square steel tubular column are taken as constraint condition under the relevant Building Code. By using the sequential quadratic programming method, we set up optimization mathematical model for optimizing the steel structure residence, and then obtain the optimal section size of the steel beams and the square steel tubular columns. After the structural optimization design, the consumption of steel GL1 was reduced by 10.2%, the consumption of square steel tubular column was reduced by 15.0%, compared with those of the original design. Relative to the original design, the total steel consumption was reduced by 12.6%. The approach proposed in this paper is an effective method for the optimization design of steel structure residence.