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Hydraulic Performance of Structures for Bridge Drainage; Final rept. Oct 95-May 97
| 题名： | Hydraulic Performance of Structures for Bridge Drainage; Final rept. Oct 95-May 97 |
| 作者： | Kranc, S. C.; Romano, F.; Droz, E.; Deavers, R.; Wilmot, J. |
| 关键词： | Highway bridges; Drainage; Hydraulics; Performance evaluation; Channels; Water flow; Intake systems; Concrete barriers; Temporary structures; Maintenance; Surface runoff; Computer models; Slopes |
| 摘要： | An experimental investigation of the hydraulic characteristics of temporary concrete barriers employed as inertial attenuators is reported here. Small cutouts are incorporated in the bottoms of the barriers so that a rectangular drainage inlet is formed when the barrier is placed on the pavement. While runoff flow to the channel created by the barrier wall is usually a continuous distribution, the inlets are located at regular closely spaced intervals, forming discrete drains. Experimental measurements of the discharge characteristics of various aperture configurations were measured both under sump and transverse flow conditions. Full scale configurations for drainage apertures were tested in an experimental flume with variable cross and longitudinal slope. The results obtained from these measurements were compared wherever possible to existing information. Finally, the information gathered was combined into a predictive model and test cases are presented. |
| 总页数： | 41p |
| 报告类型： | 科技报告 |
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