型钢高强混凝土框架柱的多目标优化设计研究

将正截面承载力、位移延性系数、轴压比及构造要求作为约束条件,采用粒子群算法、内点罚函数法和目标规划法,基于MATLAB软件编写被优化参数模型的求解程序,对型钢高强混凝土框架柱进行工程造价最小化和斜截面受剪承载力最大化多目标优化。通过对某实例的优化,并将优化结果与原方案的受剪承载力及经济效益进行对比,结果表明,该被优化数学模型满足工程应用的精度。

RESEARCH ON MULTI-OBJECTIVE OPTIMIZATION DESIGN OF STEEL REINFORCED HIGH STRENGTH CONCRETE FRAME COLUMN

As constraint conditions of the normal section bearing capacity,displacement ductility coefficient,axial compression ratio and construction requirements,based on the MATLAB program,the particle swarm algorithm, interior point penalty function method and object planning method were chosen to actualize the multi-objective optimization of the minimum cost and maximum shear bearing capacity for the steel reinforced high strength concrete frame column. The optimization design would be carried out to an example,meanwhile the comparison of optimization results with original scheme would be made on shear bearing capacity and economic benefits. The analysis results showed that the optimization mathematical model had a proper accuracy for engineering application.