原文传递
Rideability of a Deflected Bridge Approach Slab.
| 题名： | Rideability of a Deflected Bridge Approach Slab. |
| 作者： | M. Martinez; |
| 关键词： | concrete slabs,ride quality,pavement roughness index;ride quality improvement, bridge bump, joint fault, inertia; |
| 摘要： | This report presents the findings associated with the development of a new pavement roughness index called the Posted Speed Localized Roughness Index (LRIPS) that can be used to rate the ride quality on bridge approach slabs. Currently established pavement roughness indices, such as ride number (RN), profile index (PI) and international roughness index (IRI) cannot effectively rate approach slabs due to inherent limitations. This study was initiated in support of a Louisiana Quality Initiative (LQI) research effort entitled Preservation of Bridge Approach Rideability, which sought to investigate methods of improving ride quality on bridge approach slabs. The LRIPS is derived using the accelerometer outputs which high-speed profilers provide. Based on the data collected through this research, vehicle travel can be considered comfortable if the LRIPS is smaller than 1.2; uncomfortable if it is between 1.2 and 6.0; tolerable if between 6.0 and 30; intolerable if between 30 and 150 and unsafe if greater than 150. / Title Note: Final rept. / Supplementary Notes: See also PB2010-108365. Sponsored by Federal Highway Administration, Baton Rouge, LA. Louisiana Div. / 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 A05 / NTIS In-house Control Codes: dotfha;12091,1101 |
| 报告类型： | 科技报告 |
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