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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。
In the construction control of the concrete cable-stayed bridge, the structural system is constantly changing, the solution scale is large and the influencing factors are many, making the computational model complicated. In order to solve this problem, a multi-objective and multi-constrained optimization model is established. In the objective function, the expectation value of decision makers is increased, a new evaluation function is constructed, and the cohesion function optimization method is used to solve the problem. The traditional optimization algorithm reduces the number of objective functions through dimensionality reduction or construction of evaluation function, and is still solved under the original constraints. By using cohesion function method, multiple targets and multiple constraints are condensed at the same time, the multi-objective and multi-constraint The problem is transformed into a single objective optimization problem and a single constraint optimization problem so as to reduce the scale of problem solving. The optimization method complements the traditional calculation method. Finally, the application of the method in practical engineering is illustrated.