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原文传递 ORGANIZATIONAL IMPLEMENTATION AND APPLICATION OF ALASKA'S PAVEMENT MANAGEMENT SYSTEM.

题名：	ORGANIZATIONAL IMPLEMENTATION AND APPLICATION OF ALASKA'S PAVEMENT MANAGEMENT SYSTEM.
作者：	Johnson-EG; Connor-BG; Kulkarni-RB
关键词：	CONFERENCES-; ALASKA-; PAVEMENT-MANAGEMENT-SYSTEMS; IMPLEMENTATION-; MARKOV-PROCESSES; COST-EFFECTIVENESS; TRUCK-LOAD-LIMITS; PAVEMENT-LIFE; ROUGHNESS-; RUT-DEPTH; REHABILITATION-; PREVENTIVE-MAINTENANCE
摘要：	The Alaska Department of Transportation and Public Facilities (DOT/PF) implemented its pavement management system (PMS) formulated as a dynamic problem using the Markov decision process. Four technical and management committees were established in headquarters and three regions. Planning, design, materials, construction, and maintenance are represented on these committees. Technical committees provide and review data and help delimit rehabilitation projects on the basis of PMS recommendations. Management committees, which include directors, deputy commissioners, and commissioners, estabish target pavement conditions and budgets. Alaska's PMS projected an annual savings of $3.9 million compared with the average previous 10-year budget of $28 million. Although the committees require much of the PMS engineer's time, it provided a very successful vehicle for implementing PMS. Ninety percent of initial project recommendations were implemented in the 6-year plan. In 1988 the department increased the tandem axle legal load limit to 38,000 lb, reducing the average structural pavement life 28% and increasing roughness and rut depth 7.5%. PMS showed that the long-term annual cost would increase $3 million, as opposed to $12 million based on structural life alone. Urban rutting and rural roughness were found to control the scheduling of pavement rehabilitation projects rather than pavement fatigue. Because of this, pavement structural design lives were reduced from 20 to 10 years for rural Interstate and principal arterials and to 12 years for urban Interstate and principal arterials. Alaska's PMS shows that preventive maintenance is more cost-effective than corrective maintenance and that rehabilitation is more cost-effective than corrective maintenance.
总页数：	Conference Title: Third International Conference on Managing Pavements. Location: San Antonio, Texas. Sponsored by: Transportation Research Board
报告类型：	科技报告