摘要
在混凝土斜拉桥施工控制中,结构体系不断变化,求解规模大,影响因素多,使得计算模型复杂。针对该问题,建立多目标、多约束的优化模型,并在目标函数中,增加了决策者的期望值,构造新的评价函数,利用凝聚函数优化方法求解该问题。传统的优化算法通过降维或者构造评价函数,减少目标函数个数,仍在原有约束条件下进行求解,凝聚函数法通过同时对多个目标和多个约束条件进行凝聚,将多目标、多约束问题转化为单目标、单约束优化问题,减小解题规模,该优化方法是对传统计算方法的补充,最后阐述了该方法在实际工程中的应用。
The calculation model is complicated during the construction control of the concrete cable-stayed bridges since the structure system is varied and many influencing factors are considered.The multi-objective and multi-constraint optimization model is erected in the paper.The value of decision maker's expectation is used in the objective function and the evaluating function is constructed.The optimization model is solved by using aggregate function.Using the traditional method,the dimension is reduced and the evaluating function is formed to reduce the number of objectives.It is solved in the original constraint.The new method is to switch this question to an optimization of single-objective and single-constraint through aggregate function.As a result,the equation numbers are reduced.It is a supplement to the traditional method.Finally,it is applied to a real project.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2008年第S1期111-114,共4页
Journal of Building Structures
基金
辽宁省教育厅科学研究计划资助项目(05L061)
关键词
斜拉桥
凝聚函数法
决策
满意度
多目标优化
cable-stayed bridges
aggregate function
decision making
satisfying degree
multi-objective optimization
