大跨度桥梁预应力损失的遗传算法识别

Genetic Algorithm in Identifying Pre-stress Loss of the Long Span Bridge

将遗传算法用于大跨度混凝土桥梁的预应力附加损失的识别。建立附加损失的数学模型 ,根据施工时的预应力张拉后桥面实测标高与设计值的差异 ,用遗传算法识别损失模型的参数 ,确定有关各截面的损失值。

A genetic algorithm is applied in identifying the pre stress loss of the long span bridge. A model with some parameters is made to assess the pre stress loss. Based on the differences between the design value and the survey of the bridge deck elevation in constructing the pre stressed long span bridge, the model parameters are identified by the genetic algorithm, and the pre stress loss values of different sections are given. It is demonstrated that the genetic algorithm is efficient and the theoretical results fit well with the stress survey.