箱梁渡槽结构优化分析

OPTIMAL ANALYSIS OF BOX BEAM AQUEDUCT STRUCTURE

本文将最优化技术应用于简支大型箱梁渡槽的优化分析中，建立了较为科学的结构优化模型．该模型以钢筋混凝土部分的造价为目标函数，取断面尺寸，预应力钢铰线和普通钢筋量以及纵向钢铰线的重心坐标为设计变量，考虑几何、抗裂、强度、稳定等约束条件，实现了结构优化．

Use optimal technology to analyse the simple supported beam aqueduct and to establish optimal structure model.The model makes the cost of reinforced concrete as its object function;dimensions,the amount of prestress strand wires and reinforced bars,and the coordinates of gravity center of longitudinal strand wires as its design variables.And consider its constraint conditions,such as dimensions,crack resistance,strength,rigidity and stability.