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寿命周期成本分析(LCCA)是现代道路基础设施设计和系统选择过程中必不可少的组成部分。在对道路路面结构和铺设材料进行方案选择时,LCCA不仅要评价初始的建造费用,还要评价使用过程中的维护和修复费用。道路路面结构的初始实际使用寿命、使用过程中所发生的修复处理,取决于多种因素,包括交通类型、荷载的构成、维护保养的时间间隔、环境因素(例如大气温度和降雨量)等。为研发一种有可比性的成本评价方法,以进行不同类型路面的全寿命周期成本分析,有必要了解修复的时间安排、修复类型和修复工程量以及它们的使用寿命。LCCA对于在设定分析期间内建造和维护一种路面所必须的所有成本都进行了量化,设定分析期一般为25～50年;通过使用贴现率,把未来发生的费用折合为现在的价格,贴现率考虑了未来预期的通货膨胀率和银行存款利息率。输入这些数据有助于确定未来维护和修复费用的净现值。在某些特殊的场合,通过比较两种或者多种类型的路面结构和铺设面材的全寿命周期使用成本,为选择最好的路面结构方案,提供了做出有根据决策的可能性。所开发的LCCA软件工具,使预先检验不同设计方案、确定哪种路面结构在整个使用周期内取得最大成本效益成为可能。为获取连锁混凝土路面砖铺设后的全寿命周期的使用成本,需对路面设计、维护和修复程序进行适当的说明。使用LCCA软件,分别对传统柔性沥青路面、刚性混凝土现浇路面、连锁混凝土路面砖路面的全寿命周期使用成本进行分析。近年来随着全球沥青价格的上扬,这点正在变得日益重要。本文概述了LCCA的指导原则和便于使用的电子数据表格模式;对低交通量市政道路在采用柔性材料路面、刚性材料路面或连锁混凝土路面砖路面的三种状况,进行了设计及用LCCA进行对比,证实了连锁混凝土路面砖路面的全寿命周期使用成本,要低于传统沥青路面和现浇混凝土路面。在这项对比分析时,预先假设路面为一般设计寿命、典型的路基基础材料和预期的交通负荷。
Life Cycle Cost Analysis (LCCA) is an integral part of modern road infrastructure design and system selection. LCCA not only evaluates initial construction costs but also evaluates maintenance and repair costs during use of the road pavement structure and laying materials. The initial actual service life of a pavement structure and the repair process that takes place during its use depend on many factors including the type of traffic, the composition of the load, the maintenance intervals, environmental factors such as atmospheric temperature and rainfall. In order to develop a comparable cost estimation method for life-cycle cost analysis of different types of pavements, it is necessary to know the timing of repair, the type of repair and the amount of repair work and their useful life. The LCCA quantifies all the costs necessary to construct and maintain a pavement during the set analysis period, typically set at 25 to 50 years, and discounts the costs incurred in the future to the current prices by using the discount rate , The discount rate takes into account the future expected inflation rate and bank deposit interest rate. Entering this data helps determine the net present value of future maintenance and repair costs. In some special cases, the possibility of making informed decisions for the selection of the best pavement structure by comparing the cost of life of the two or more types of pavement structures and surfacing materials. The development of the LCCA software tools makes it possible to test different designs in advance to determine which pavement structure is most cost-effective over the entire life cycle. In order to obtain the full service life of the chain concrete paving slabs, the proper design of the pavement design, maintenance and repair procedures shall be given. The use of LCCA software, respectively, on the traditional flexible asphalt pavement, rigid concrete cast-in-place pavement, the chain of concrete pavement life-cycle analysis of the cost. This is becoming increasingly important as global bitumen prices have risen in recent years. This article provides an overview of the LCCA guidelines and an easy-to-use spreadsheet model. Three scenarios for low-volume municipal roads with flexible materials, rigid materials, or interlocking concrete pavers are designed and compared using LCCA , Confirms the cost of life cycle of the chain concrete pavement brick pavement, lower than the traditional asphalt pavement and cast-in-place concrete pavement. In this comparative analysis, it is assumed in advance that the road surface has a typical design life, a typical subgrade material and an expected traffic load.