沥青路面的预防性养护时机

为了使公路预防性养护措施发挥最大效果，对沥青路面预防性养护时机进行了研究，提出了基于生命周期费用的沥青路面预防性养护时机的确定方法。根据公路预防性养护工程的特点，建立了确定最佳预防性养护时机的效果费用比计算模型，给出了生命周期内的费用组成及计算方法；对效果进行了定量分析，提出了效果量化方法；通过计算效果费用比，确定效果费用比最大的预防性养护时机方案为最佳方案；对某高速公路预防性养护工程进行实际应用研究，给出了决策建议。工程实际表明，该方法是一种选择预防性养护时机的有效工具，对公路养护部门制定合理的实际性养护计划具有参考价值。

Preventive maintenance timing of asphalt pavement

In order to maximize the effect of preventive maintenance approaches of asphalt pavement,this paper makes a study of the timing of asphalt pavement preventive maintenance and puts forward the method to specify the optimal timing of preventive maintenance based on life cycle cost,establishes a computerized effect-cost-ratio model,proposes a cost mix and calculating method within the life cycle,analyzes and quantifies the effects,and thus presents the approaches to specify the effects,concludes that the timing plan with the biggest ratio shall be the best and optimal timing for pavement preventive maintenance.A case study of a highway is offered.It's shown that the approach,an effective tool in choosing preventive maintenance timing,is of great significance for highway maintenance department in regulating rational preventive maintenance plans.3 tabs,1 fig,8 refs.