关键词: |
highway-railway crossings,rail-highway grade crossings,grade crossing,profile evaluation;design criteria, methodology, railway crossing rehabilitation, asphalt underlayment, trackbed crossings, interfacial surface pressure measurements, surface, settlemen |
摘要: |
Replacing and rehabilitating highway-railway at-grade crossings represent major track maintenance expenses for the U.S. highway governmental agencies and railroad industry. The ideal crossing system is one that will maintain a smooth surface and stable highway/trackbed for a long period of time minimizing costly and inconvenient disruptions to highway and rail traffic. This report describes the consensus goals for, and the development of, a cooperative, fast-track crossing renewal system for an ideal highway-railway crossing management program. The performance-based process utilizes premium structural materials and construction techniques to provide long-term, cost effective, smooth, and safe crossings. Specifically stressed is the desirability of using a high-modulus, waterproofing, structural layer composed of hot-mix asphalt. Detailed descriptions are provided for several representative projects. These include typical installation processes, installation time studies, photographic documentation, and cost/economic evaluations. References are provided for Performance Measures that are documented in succeeding reports emanating from this project. These include (1) Trackbed and Surface Pressure Measurements, (2) Long-Term Settlement Measurements, (3) Rideability Measurements, and (4) Interfacial Surface Pressure Measurements. / Title Note: Final rept. 01 Jul. 2004 - 30 Jun. 2009. / Supplementary Notes: Sponsored by Kentucky Transportation Cabinet, Frankfort. and Kentucky Transportation Cabinet, Frankfort. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA. / NTIS Prices: PC A08 / NTIS In-house Control Codes: dotfha;12091,1101 |