Protocols for Collecting and Using Traffic Data in Bridge Design
| 项目名称： | Protocols for Collecting and Using Traffic Data in Bridge Design |
| 摘要： | A new vehicular live-load model was developed for the AASHTO LRFD Bridge Design Specifications because the HS20 truck from AASHTO's Standard Specifications for Highway Bridges did not accurately represent service-level truck traffic. The HL93, a combination of the HS20 truck and lane loads, was developed using 1975 truck data from the Ontario Ministry of Transportation to project a 75-year live-load occurrence. Because truck traffic volume and weight have increased and truck configurations have become more complex, the Ontario data do not represent present traffic loadings. Other design live loads were based on past practice and did not consider actual or projected truck traffic. Although the quality and quantity of traffic data has improved in recent years, it has not been used to update the bridge design loads. Methods of using enhanced traffic data for bridge design need to be developed. The objective of this project is to develop and demonstrate the application of protocols for collecting and processing traffic data to calibrate national bridge live-load models. |
| 状态： | Completed |
| 资金： | 300000.00 |
| 资助组织： | Federal Highway Administration<==>American Association of State Highway and Transportation Officials (AASHTO)<==>National Cooperative Highway Research Program |
| 项目负责人： | Beal, David B |
| 执行机构： | Lichtenstein Consulting Engineers, Incorporated |
| 开始时间： | 20060301 |
| 实际结束时间： | 20080901 |
| 主题领域： | Bridges and other structures；Data and Information Technology；Highways |
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