原文传递
Continuous Deflection Testing of Highways at Traffic Speeds.
| 题名： | Continuous Deflection Testing of Highways at Traffic Speeds. |
| 作者： | arora, j. tandon, v. nazarian, s. |
| 关键词： | texas, nondestructive testing, high speeds, stiffness, test methnods, pavement tests, vibration, highways |
| 摘要： | Nondestructive testing devices have been utilized for the last 50 years to assess the structural condition and bearing capacity of existing or newly-constructed pavement systems. A variety of devices have been developed to measure the deformation (deflection) of a pavement due to an applied load. Currently, the most commonly-used nondestructive testing device is the Falling Weight Deflectometer. The Falling Weight Deflectometer is a stop and go (discrete testing) operation rather than a continuous testing operation. The discrete test points are assumed to be representative of a specified length of the pavement under investigation. The stop and go process increases testing time, operational cost and creates unsafe working environment due to traffic interruptions. To measure deflection profiles at or near highway speeds, various national and international research efforts have taken place in the last decade. However, the status, reliability, operational speed and cost, and limitations of the developed systems are unknown. The main objective of this research project was to summarize the state-of-the-art of continuous deflection measurement systems. Another objective of this study was to propose a specification for an ideal device, if the existing devices do not meet the needs of TxDOT. The results of the findings and ways to incorporate that device in the TxDOT's pavement management systems are reported here. / NOTE:Technical rept. (Sept. 2003-Dec. 2005). |
| 总页数： | u0708；155p |
| 报告类型： | 科技报告 |
相关文献
- Continuous Deflection Testing of Texas Pavements.
- SPEED ZONE GUIDELINES USING ROADWAY CHARACTERISTICS AND AREA DEVELOPMENT
- Comparison Between Falling Weight Deflectometer and Static Deflection Measurements on Flexible Pavements at the National Airport Pavement Test Facility (NAPTF).
- Development of a Rolling Dynamic Deflectometer for Continuous Deflection Testing of Pavements
- MGS Dynamic Deflections and Working Widths at Lower Speeds.
- Controllable Wheeled Vehicle Suspension Research
检索历史
应用推荐
