沥青路面结构与材料的寿命周期决策方法

Life Cycle Decision Methodology for Asphalt Pavement Structures and Materials

为了选择寿命周期效益高的路面结构及材料方案,基于寿命周期理念,采用力学-经验法建立了路用性能预测模型,通过寿命周期评价(LCA)方法测算了方案的寿命周期环境影响,并利用寿命周期费用分析方法测算了包括初建、运营养护等全过程费用,从性能、环境、经济3个方面建立了路面方案决策指标体系,基于专家调查法确定了评价指标权重,并结合G312镇江城区改线段工程进行了案例分析。结果表明,文中从性能、经济、环境3个方面建立的基于寿命周期的路面结构及材料决策方法具有较好的适用性能,为路面方案选择提供了科学依据。

Based on the concept of life cycle,the pavement performance prediction model is established by the mechanics-empirical method,the environmental impacts of pavement is calculated by the environmental life cycle assessment method,and the life cycle cost including construction,operation and maintenance is also calculated.Upon the pavement performance,environmental impact and economy,the asphalt pavement structures and materials decision-making index system is established.In the meantime the weights of the index are quantified by the Delphi method.A case study of G312 in Zhenjiang is carried out.It is pointed out that,the asphalt pavement structures and materials decision method established has good applicability and provides a scientific method for pavement scheme choice.