IRF2005会议论文摘要 W22: 道路资产管理 II
更新时间：2005年07月07日 来源： 作者：
第十五届国际道路联盟世界会议 ——会议论文摘要
W22: 道路资产管理 II
120 利用道路资产数据进行有效的资产管理和规划
作者：Graham Stickler, Exor Corporation, 英国
While Asset Management is a wide and varied, and yet topical, debate it can be broadly overviewed as concerning: what assets do we control; where are they; what is their condition; how much money are we spending on them; and are we delivering an effective service? This normally involves the querying of 3 ‘datastores’: the asset register; associated inspection and condition data; and lastly works management and financial data. Bringing together such data from across the enterprise in a coherent manner is not always an easy task and yet the ability to make informed and effective asset management decisions is impossible without the pooling of such information. Indeed it is a commonly held view that Asset Management’s toughest challenge is the integration of these historically stand-alone systems so that they can communicate, exchange and cross reference data.
In Road Transportation Asset Management we can have a unique situation in that the primary asset itself can be used to integrate data. Effective modelling of the underlying road network and the application of advanced software tools allows us to tie data together by their location on the road network. When this locational integration is further enhanced with the use of geography to allow for map visualisation a powerful management tool can be provided.
This paper investigates and explains the approaches that can be taken to model the road network in such a way that it can integrate data. This is illustrated with practical examples from various Road authorities around the world which shows how this is being achieved today to provide integrated and therefore effective asset management planning.
121 法国收费高速公路网的路面管理系统
作者：Eric Layerle, Autoroutes Du Sud De La France, 法国
With more than 2 440 kilometers of motorways in exploitation and 210 kilometers in construction or project, the "Autoroutes du Sud de la France" (ASF) company is the most important concessionary toll motorway French firm. In order to manage its patrimony, that represents about 60 millions pavement square meters, ASF set up a process of follow-up and management, which allows to follow up the evolution of the level of service and to compare it to the wished level.
The management system is founded on a geographic information system, which includes the detailed description of each pavement section: geometry, date of construction, pavement structure, nature and date of maintenance works, and results of pavement condition survey realised each year. Pavement condition surveys are realised regularly and systematically by great efficiency appliances, most often multifunction ones, and they are planned function of lawful obligations and inner procedures. The information measured is evenness, micro texture, macro texture, and surface degradations. The results are compared with levels fixed by the firm policy and classified in different levels (from good to bad) to obtain unitary indexes. These indexes are then crossed to obtain specific indexes, for example evenness index or adhesion index, or global indexes representative of the pavement global level of service. The management system calculate each year the indexes, and also a global note representative of a section, or a motorway or the full network.
The indexes and notes are used for various objectives: -to obtain a global image of the network, -to hierarchize sections and choose the ones which necessitate maintenance works, -to check incidence of investments on the level of service. The article will describe more in detail the organization, the survey appliances, the methods to calculate indexes and their interpretation for high level of service motorway.
122 路面生命周期成本分析和道路管理人员手册
作者：Satoshi Taniguchi, 土木工程研究所, 日本
"Technical Standard for pavement structure" was established as government circular in 2001. This standard says that road administrators shall determine design periods for pavement structures by taking account of costs for construction and management (i.e. life-cycle cost), effects of the construction works on the road traffic and regional environment, plans for road works, and others. However concrete estimating method for life-cycle cost was not shown. Therefore life-cycle cost has not propagated to road administrators.
This study mentions tentative manual that suggests detail items and computing methods, and induction into work offices. To establish the manual, research for work zone user cost as road user cost and social external cost such as noise were conducted in Public Works Research Institute (PWRI). To estimate work zone user cost, Estimating method shown in FHWA’s “Life-Cycle Cost Analysis in Pavement Design” was modified to be able to compute work zone user cost using data and informations collected in Japan. To estimate social cost for noise, two calculation methods were suggested. The one is that road administrator requires to satisfy the environmental standard of noise as a demand for pavement. Another is to compare a benefit of drainage asphalt pavement with dense grade asphalt pavement.
This established manual is inducted tentatively at 11 work offices of 9 regional bureaus in Ministry of Land, Infrastructure and Transportation (MLIT). Estimation result of road administration and road user cost was confirmed in this induction into work offices. As a result, queue delay costs were most affected due to congestion and that it is essential to increase the accuracy of the calculation of congestion data in urban roads that has many traffic volumes. And performance curve set by pavement data bank has not corresponded. Therefore pattern of maintenance and rehabilitation work and accuracy of performance curve should be considered.
123 在依靠经验进行分析的路面管理系统中使用增量－递归破坏模式
作者：Yunus Wahab, Dynatest Denmark A/S, 丹麦
Road networks may not only be large in nature, but there is also a large investment in the existing and expanding pavement infrastructure, and this large investment has to be managed as one would do with any other investment. Road Authorities must decide on how to spend their available budgets effectively. This paper explains how, relatively simple damage models based on analytical-empirical principles can be used in the Pavement Management System PERS for planning long term maintenance and rehabilitation of a highway network, and how PERS itself can be used for improving the damage functions and thus to reduce the overall costs of road transportation.
PERS is a software package developed by Dynatest for lifetime pavement analysis and pavement management. The concept is to use incremental-recursive models to predict the future damage to the pavement, from present pavement condition and the effects caused by traffic loading and climate. Simulation of maintenance activities is done by applying a maintenance measure in any year of the analysis period. The effects can be studied graphically like all relevant costs to the agency and the users. Costs models are also user-defined. In addition it is possible to let PERS calculate maintenance plans using a database of maintenance alternatives and predefined critical limits for the condition data.
