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PERFORMANCE OF W-BEAM SPLICES.
| 题名： | PERFORMANCE OF W-BEAM SPLICES. |
| 作者： | Ray-MH; Plaxico-CA; Engstrand-K |
| 关键词： | Bolts-; Deformation-; Design-; Failure-; Finite-element-method; Guardrails-; Impact-tests; Laboratory-tests; Location-; Midspan-locations; Prototype-tests; Splicing-; Structural-connection; Tension-; W-beams |
| 摘要： | Structural failure of post-and-beam W-beam guardrails during impact sometimes is due to the rupture of the W-beam rail where two sections are spliced together with bolts. Summarized is a study of the mechanics of failure of the splice connection. The causes of rupture are identified, and a design alternative is formulated that will reduce the likelihood of rupture of the splice connection. The tensile forces in the W-beam rail and the mode of deformation of the splice connection during impact were critical factors considered in the study. The results of full-scale crash tests, laboratory tests, and finite element analysis indicate that relocating splices to midspan locations would greatly reduce the chance of observing a rupture of the guardrail in full-scale crash tests and in real-world collisions. |
| 总页数： | Transportation Research Record. 2001. (1743) pp120-125 (Phots., Figs., 2 Tab., 13 Ref.) |
| 报告类型： | 科技报告 |
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