【摘要】 从权重的涵义出发,分析了传统权重评价方法存在的问题,认为指标权重计算结果应是动态变化的,即会随着指标实际取值的变化而变化。以此为出发点,引入了可拓理论的简单关联函数对传统权重求解的AHP(层次分析法)进行了改进。改进的方法一方面减少了边坡稳定性多因素评价方法中由于主观因素过多对指标权重结果合理性的影响,使指标权重的求解结果更加客观;另一方面,充分反映了相同指标在不同取值的情况下对边坡系统稳定性影响程度的变化,使评价结果更趋合理。对某具体边坡工程实例进行了分析,研究结果表明:指标权重具有动态变化的特征。也就是说,即使评价指标相同,指标权重值也会随着指标具体取值的不同而发生变化,从而对边坡稳定性的评价结果产生影响。更多还原

【Abstract】 From the definition of weight,the weak point of weight calculation by traditional analytic hierarchy process(AHP) is analyzed.It is pointed out that the factor weight is not unchangeable,which can vary with the difference of actual values of factors.Taking this as starting point,the simple dependent degree of extension theory is introduced to improve the traditional AHP.The improved method not only can avoid the disadvantages which are caused by subjectiveness during the weight calculation but also can fully reflect the impact on slope stability when the same factor has different data,which should make the evaluation results more reasonable.Finally,a specific example of slope project is studied.The results show that the factor weight has a dynamic characteristic,that is,even if evaluation factors are same,the values of factor weight will also alter with the different data of factors,then the evaluation results of slope stability must be different.更多还原