3种路面方案选择方法的对比应用

在进行路面方案选择时,常采用层次分析法和模糊综合评判方法,评判结果依赖于专家的判断,方案评判的可信度较低。借鉴路面管理系统、寿命周期费用等研究成果,提出了一种新的选型方法———性能费用比法,给出了详细的使用步骤,并结合实例进行了3种选型方法的对比。结果表明,性能费用比法不仅具有专家评判的优点,而且评判结果更合理全面,完全定量化,是进行路面方案选择的有效方法,将得到日益广泛的使用。

Comparative Application of Three Methods for Selecting Pavement Alternatives

When selecting pavement alternatives,analytic hierarchy process and fuzzy comprehensive judgment methods are usually used.But evaluation results of these two methods depend greatly on some experts' judgments,thus reliability of alternative evaluation is too poor to be accepted sometimes.On the basis of more researches,such as Pavement Management System(PMS) and Life Cycle Cost Analysis(LCCA),a new selecting method,known as performance-cost ratio method,is introduced.Detailed steps of this method are offered.These three methods are compared with an example for selecting base types of expressway asphalt pavement.The result shows that,performance-cost ratio can not only have some advantages of expert evaluation,but also can be more rational,more(comprehensive) and fully quantitative.So this method is an effective method for selecting pavement alternatives in road construction,this method will have extensive usage.