深基坑支护系统方案的优化设计是一个相当复杂的系统工程优化问题。针对工程实际 ,采用层次分析方法 ,根据武汉地区长江一级阶地的工程地质和水文地质特点构造层次结构模型 ,建立起深基坑支护系统方案的评价体系 ,并对评价指标进行了规一化处理。通过各种可行方案的定量评价对比 ,选出最佳方案 ,以达到深基坑支护系统方案优化设计的目的 The optimal design of deep foundation pit support system is a very complicated system engineering optimization problem. According to the engineering practice, using the analytic hierarchy process, according to the engineering geology and hydrogeological features of the terraced Yangtze River in Wuhan, a hierarchical structure model is constructed and the evaluation system of the deep foundation pit support system is established. The evaluation index is normalized deal with. Through the quantitative evaluation and comparison of various feasible schemes, the best scheme is selected to achieve the goal of optimal design of the deep foundation pit support system