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Effects of Fabrication Procedures and Weld Melt-Through on Fatigue Resistance of Orthotropic Steel Deck Welds.
| 题名： | Effects of Fabrication Procedures and Weld Melt-Through on Fatigue Resistance of Orthotropic Steel Deck Welds. |
| 作者： | sim, h. b. uang, c. m. |
| 关键词： | metal plates, camber, fatigue, resistance, crack propagation, strain gages, stresses, ribs(supports), finite element method, cross sections, mechanical properties, bulkheads |
| 摘要： | A common practice for the fabrication of orthotropic bridge deck in the US involves using 80% partial-joint penetration groove welds (PJP) to join closed ribs to a deck plate. Avoiding weld melt-through with the thin rib plate may be difficult to achieve in practice because a tight fit may not always be achievable. When weld melt-through occurs, which is difficult to inspect inside the ribs, it is not clear how the geometric discontinuities would affect the fatigue resistance. Furthermore, a distortion control plan, which involves heat straightening or even pre-cambering, is also used for the fabricated orthotropic deck in order to meet the flatness requirement. It is unclear how repeated heating along the PJP weld line would affect the fatigue resistance. / NOTE: Final rept. Jul 04-Sep 06. / Supplementary Notes: Sponsored by California State Dept. of Transportation, Sacramento. Engineering Service Center. and Federal Highway Administration, Sacramento, CA. California Div. / Availability Note: Available on CD-ROM and in color paper copy only. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0813；192p |
| 报告类型： | 科技报告 |
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