模拟退火算法在军用桥梁优化设计中的应用

军用桥梁结构优化设计中包含两类设计变量：连续变量和离散变量，混合变量优化设计问题是军用桥梁界普遍关注的问题。介绍了一种新的优化设计方法——模拟退火算法，其突出的优点是可以求得全局最优解。以军用桁架桥为例，对军用桥梁结构设计中连续和离散混合设计变量的优化问题进行了分析，计算结果表明该方法是可行的。对算法在军用桥渡结构设计中的应用提出了几个研究方向。

Application of Simulated Annealing Algorithm in Optimum Design of Military Bridge

In the optimum design of military bridge,the design variables include continuous variables and discrete ones.How to solve the mixed variables optimum problems has drawn great attention from the military bridge field.In this paper,a new optimum technology--simulated annealing (SA) is introduced.The outstanding advantage of SA is that it can find the global optimum solution.SA is applied in a mixed variables structural optimum design of the military long-span Truss Bridge.The feasibility is validated by the results.Finally,several directions based on SA in military bridge and float bridge design are put forward.