沉箱截面优化设计

Optimal Design of Caisson Sections

采用分部优化与整体优化相结合的办法对矩形钢筋混凝土沉箱进行了结构优化没计以材料造价最低为目标函数，以沉箱各种构件断面尺寸及配筋为设计变量采用解析法求敏度计算结果表明，程序是高效的可行的。

In this paper,an optimal design of reinforced concrete rectangular caisson is studied by combining the part optimization and the whole optimization technique .The object function is the minimization of total costs of the caisson ,and the design variables are the sizes of a variety of members and the reinforced bars in each member.In order to analyze the sensitivity,the analytic method is used.The computational results indicate the efficiency and feasibility ,and the program is stable and convergent.