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New Development Length Equation for Pretensioned Strands in Bridge Beams and Piles; Final rept. 1990-98
| 题名： | New Development Length Equation for Pretensioned Strands in Bridge Beams and Piles; Final rept. 1990-98 |
| 作者： | Lane, S. N. |
| 关键词： | Bridge piers; Pretensioning; Beams(Supports); Prestressed concrete; Bridge design; I beams |
| 摘要： | In 1988, the Federal Highway Administration (FHWA) issued a memoandum that outlawed the use of 15.2-mm- (0.6-in-) diameter strands, restricted the spacing of strands, and applied a multiplier to the American Association of State Highway and Tranportation officials' (AASHTO) development length equation. This memorandum initiated considerable research on the subject of bond of pretensioned strands in concrete. Forty-one research studies have been undertaken since 1988 to clarify the issues in the memorandum. |
| 总页数： | 138p |
| 报告类型： | 科技报告 |
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