CAJ | 학술논문

文章将S RC框架梁的工程造价最小和正截面抗弯承载力最大定为优化目标，并对其进行无量纲化处理，使得多目标的优化问题转化为单目标优化问题。采用线性加权法构造评价函数，通过调整加权系数来改变2个优化目标在优化中的重要程度，通过算例给出合理取值，为组合结构的多目标优化问题提供参考。S RC构件中的型钢腹板及翼缘的高度、宽度等对梁的受力状态所做的贡献不同，通过引入层次分析法理论，在遗传算法的编码过程中对各变量进行权重赋值，使得对构件受力影响较大的单元赋予较大的权重，从而更好地发挥各组成部分的作用。
문장장S RC광가량적공정조개최소화정절면항만승재력최대정위우화목표，병대기진행무량강화처리，사득다목표적우화문제전화위단목표우화문제。채용선성가권법구조평개함수，통과조정가권계수래개변2개우화목표재우화중적중요정도，통과산례급출합리취치，위조합결구적다목표우화문제제공삼고。S RC구건중적형강복판급익연적고도、관도등대량적수력상태소주적공헌불동，통과인입층차분석법이론，재유전산법적편마과정중대각변량진행권중부치，사득대구건수력영향교대적단원부여교대적권중，종이경호지발휘각조성부분적작용。
The minimum project cost and the maximum flexural capacity of steel reinforced concrete (SRC) frame beam are taken as the optimization objectives which are dimensionless ,thus making the multiple-objec-tive optimization problem become the single-objective one . The evaluation function is built by the linear weighted method and the importance degree of the two objectives in the optimization can be adjusted by weighting factors .The reasonable values are given by an example ,which provides references for the multi-ob-jective optimization problem of composite structure .Because of the different contributions of the depth and width of steel web and flange in SRC component to the stress state of the beam ,the analytic hierarchy process is introduced to give each variable weight in the encoding process of genetic algorithms ,which makes the im-portant members have greater weight and thus makes use of the members effectively .