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High speed video analysis of rockfall fence system evaluation. Final report
| 题名： | High speed video analysis of rockfall fence system evaluation. Final report |
| 作者： | Lucero, J.P.;Fry, D.A.; |
| 关键词： | 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION ;57 HEALTH AND SAFETY; PROGRESS REPORT; ROCK FALLS; CONTAINMENT SYSTEMS; ULTRAHIGH-SPEED PHOTOGRAPHY; ROADS; SAFETY ENGINEERING; IMPACT TESTS; CERTIFICATION |
| 摘要： | Rockfall fence systems are used to protect motorists from rocks, dislodged from slopes near roadways, which would potentially roll onto the road at high speeds carrying significant energy. There is an unfortunate list of such rocks on unprotected roads that have caused fatalities and other damage. Los Alamos National Laboratory (LANL) personnel from the Engineering Science and Applications Division, Measurement Technology Group (ESA-MT), participated in a series of rockfall fence system tests at a test range in Rifle, Colorado during March 1998. The tests were for the evaluation and certification of four rockfall fence system designs of Chama Valley Manufacturing (CVM), a Small Business, located in Chama, New Mexico. Also participating in the tests were the Colorado Department of Transportation (CDOT) who provided the test range and some heavy equipment support and High Tech Construction who installed the fence systems. LANL provided two high speed video systems and operators to record each individual rockfall on each fence system. From the recordings LANL then measured the linear and rotational velocities at impact for each rockfall. Using the LANL velocity results, CVM then could calculate the impact energy of each rockfall and therefore certify each design up to the maximum energy that each fence system could absorb without failure. LANL participated as an independent, impartial velocity measurement entity only and did not contribute to the fence systems design or installation. CVM has published a more detailed final report covering all aspects of the project. |
| 总页数： | 14p |
| 报告类型： | 科技报告 |
相关文献
- HIGH SPEED VIDEO ANALYSIS OF ROCKFALL FENCE SYSTEM EVALUATION
- Guidelines for Certification and Management of Flexible Rockfall Protection Systems, National Cooperative Highway Research Program (NCHRP) Report 823
- Guidelines for Certification and Management of Flexible Rockfall Protection Systems, National Cooperative Highway Research Program (NCHRP) Report 823.
- Brugg Fence Evaluation Construction Report (Brugg Rockfall Safety Netting and Fence); Rept. for 1991.5-1992.1
- TESTING AND MODELING OF TWO ROCKFALL BARRIERS.
- Three-Dimensional Digital Imaging for the Identification, Evaluation and Management of Unstable Highway Slopes.
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