滑坡整治中抗滑桩的优化设计方法

以既经济合理又安全可靠为目的，对中、大型滑坡整治中广泛应用的抗滑桩进行优化设计。运用多目标决策模糊集理论，建立用于抗滑桩整治方案评价的目标（指标）特征值矩阵，并进行指标值归一化处理；运用层次分析法，建立层次结构模型，构造判断矩阵。优选出具有多种属性和模糊特性的抗滑桩滑坡整治方案。通过确定决策变量、目标函数、约束条件（如强度、尺寸、配筋等）和优化算法，优选所选定抗滑桩细部结构，达到成本最低的目的。利用软件Matlab6．5求解非线性有约束多元函数的最小值。工程实例优化设计表明：通过优化抗滑桩整治滑坡方案和抗滑桩的细部结构，有效降低成本约16％。

Optimization Design Methods of the Stabilizing Piles in Landslide Treatment

In order to attain reasonable cost and reliable safety,the optimization design of the selected stabilizing piles in middle-large landslide treatment has been done.Using multi-objective decision making fuzzy set analysis and analytical hierarchy process,the optimized project of the stabilizing piles in landslide treatment,which is of the multiple attribute and fuzzy property,is selected.Through the selection of decision variables,objective function,constraint condition(i.e.strength,size,reinforcement etc.) and optimization algorithm, the detailed structure of the selected stabilizing piles can be optimized in order to minimize the cost of construction.By means of the software Matlab 6.5,this minimized value of nonlinear constraint minimization value is solved.A practical example of optimization design applied to the landslide treatment has shown that there is lower cost of construction,up to 16% decrease,by both selecting program and deciding the detailed structure of the stabilizing pile.