原文传递
IMPACT OF CHANGING TRAFFIC CHARACTERISTICS AND ENVIRONMENTAL CONDITIONS ON FLEXIBLE PAVEMENTS.
| 题名： | IMPACT OF CHANGING TRAFFIC CHARACTERISTICS AND ENVIRONMENTAL CONDITIONS ON FLEXIBLE PAVEMENTS. |
| 作者： | Zhang-Z; Leidy-JP; Kawa-I; Hudson-WR |
| 关键词： | AASHO-Road-Test; Design-methods; Environment-; Equivalent-single-axle-loads; Flexible-pavements; Impact-studies; Load-equivalency-factors; North-American-Free-Trade-Agreement; Texas-; Traffic-characteristics |
| 摘要： | Although the trend for the next generation of pavement design methods is shifting to mechanistic design, the use of design methods based on the AASHO road rest results is still the current design practice in Texas and some other states. Critical to these design methods are the AASHTO load equivalency factors (LEFs), which are used to convert the mixed traffic axle loads into standard 18-kip (80.1-kN) equivalent single-axle loads. Several studies have been conducted on the subject of load equivalency for pavement design and analysis. However, there remain uncertainties related to various issues of load equivalency. Over the years, the composition and characteristics of traffic using Texas highways have been changing. The North American Free Trade Agreement has accelerated such changes in that more trucks, primarily moving among midwestern states, Texas, and Mexico, are traveling on Texas highways. In addition, the original AASHO road test was conducted at a site with environmental conditions significantly different from the environmental conditions in Texas. It is therefore critical to understand fully the impact of such changing traffic characteristics and environmental conditions on pavements in Texas. Presented is the methodology used to analyze the impact of these factors on the AASHTO LEFs. |
| 总页数： | Transportation Research Record. 2000. (1730) pp125-131 (4 Fig., 5 Tab., 31 Ref.) |
| 报告类型： | 科技报告 |
相关文献
- Impact of Changing Traffic Characteristics and Environmental Conditions on Performance of Pavements. Technical rept. (Sept 1999 - Aug 2000).
- Tire-Pavement and Environmental Traffic Noise Research Study.
- Thin-Surfaced Pavements. A Synthesis of Highway Practice
- Factors Affecting the Accuracy of Road Profilers Measurements; Technical rept
- Changes in Flow-Density Relationship Due to Environmental, Vehicle, and Driver Characteristics
- Design of Lane Merges at Rural Freeway Construction Work Zones.
检索历史
应用推荐
