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CURVED-BEAM STIFFNESS FOR THERMOPLASTIC GRAVITY-FLOW DRAINAGE PIPES.
| 题名： | CURVED-BEAM STIFFNESS FOR THERMOPLASTIC GRAVITY-FLOW DRAINAGE PIPES. |
| 作者： | Gabriel-LH; Goddard-JR |
| 关键词： | CURVED-BEAMS; DRAIN-PIPE; GRAVITY-FLOW-DRAINAGE; HIGH-DENSITY-POLYETHYLENE; LABORATORY-STUDIES; MODULUS-; POLYVINYL-CHLORIDE; RELAXATION-MECHANICS; STIFFNESS- |
| 摘要： | Procedures for evaluating time-independent initial stiffness, at the time of application of load, of high-density polyethylene and polyvinyl chloride gravity-flow drainage pipes with curved-beam sections of production run pipe are proposed as an alternative to ASTM Standard D2412 "Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel Plate Loading." A strategy for predicting relaxation moduli extrapolated to 50 and 100 years is proposed. Laboratory studies are presented and discussed. |
| 总页数： | Transportation Research Record. 1999. (1656) pp51-57 (1 Phot., 9 Fig., 2 Tab., 5 Ref.) |
| 报告类型： | 科技报告 |
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