土石坝结构区间优化设计

用区间分析法研究土石坝的断面优化设计。根据土石坝的结构特点和工作条件，建立了合适的优化设计数学模型，探讨了区间优化设计的求解方法。实例计算表明：区间分析法能有效地解决土石坝结构的优化设计问题，能得到全局最优解，克服常规数学规划法计算往往只得到局部最优解的缺陷；收敛性好，计算量小，简便有效；得到的优化方案安全可靠，经济合理。

Interval Optimum Design of Earth Rock Dams

The optimum design problems of earth rock dams(ERD) are studied with an interval analysis method in this paper.Based on the structural characteristics and service conditions of ERD,a mathematical model of optimum design is established and the interval optimum method is discussed.A case study shows that the method can be used to solve the problem of optimum design of ERD efficiently,and give the overall optimum solution,thus overcoming the defect of the regular mathematical programming which only gives the local optimum solution.The optimum plan is reasonable,reliable and economical.It has been proved in practice that the method is simple and effective.