原文传递
DETERMINING LENGTHS OF INSTALLED TIMBER PILES BY DISPERSIVE WAVE PROPAGATION.
| 题名： | DETERMINING LENGTHS OF INSTALLED TIMBER PILES BY DISPERSIVE WAVE PROPAGATION. |
| 作者： | Holt-JD; Chen-S; Douglas-RA |
| 关键词： | TIMBER-PILES; INSPECTIONS-; EMBEDMENT-PILE; LENGTH-; DETERMINATION-; NONDESTRUCTIVE-TESTING; DISPERSIVE-WAVE-PROPAGATION; ACCURACY- |
| 摘要： | Timber piles are used as a primary means of support for many structures, such as bridges, throughout the continental United States and must periodically be inspected. Sometimes a pile's overall length is not known because pile records are incomplete or nonexistent; so, calculating the effects of scour on its embedment length can present a problem. A new nondestructive testing method is described that employs dispersive stress-wave propagation and special signal-processing techniques to find the lengths of installed timber piles. The method was studied and developed in the laboratory and then applied to installed piles in the field for which there were records. Some piles were pulled to verify the method directly. The computed pile lengths, compared with records or measurements after pulling, were within error bounds of approximately +/- 10%. The test method holds promise for calculating the depth and physical condition of deeply embedded piles as well as those embedded in shallow concrete footings, and it has been shown to be predictive for piles of varying physical conditions and ages. |
| 总页数： | Transportation Research Record. 1994. (1447) pp110-115 (7 Fig., 8 Ref.) |
| 报告类型： | 科技报告 |
相关文献
- CONDITION ASSESSMENT OF INSTALLED TIMBER PILES BY DISPERSIVE WAVE PROPAGATION.
- Nondestructive Evaluation of the Structural Condition of Timber Piles (Volume 1 of 2)
- Nondestructive Evaluation of the Structural Condition of Timber Piles. Volumes 1 and 2; Final rept. Jul 98-Dec 99
- Load Rating and FRP Retrofitting of Bridge Abutment Timber Piles
- EROSION CONTROL OF SCOUR DURING CONSTRUCTION; Report 6, FINITE—A NUMERJCAL MODEL FOR COMBINED REFRACTION AND DIFFRACTION OF WAVES
- Load Rating and Retrofit Testing of Bridge Timber Piles Subjected to Eccentric Loading.
检索历史
应用推荐
