本研究採音波回音法與脈波反應法來檢測六支預置不同位置及缺陷尺寸之基樁，用以分析判別其缺陷位置與基樁長度。其中，含缺陷樁再以離散小波轉換將樁底與缺陷頻率之訊號分離，使缺陷位置得以突顯，利於辨識。藉由音波回音法之時間域與脈波反應法之頻率域的訊號結果分析比較，並討論地音計擺設位置是否對訊號之判別有所影響。
研究結果顯示，不論是音波回音法或脈波反應法之訊號均可準確判斷出基樁之長度，但缺陷訊號不易判讀，而本研究使用之離散小波轉換，將分解所得之缺陷訊號轉換至頻率域判讀，此法可突顯缺陷訊號以求得缺陷位置。

In this study, sonic echo (SE) method and impulse response (IR) method are used to detect six different preset defects of the piles, and to determine the flaws and the length of the pile. Discrete wavelet transform (DWT) is used to separate the bottom and the flaw frequency signal of pile. This will be helpful to tell the flaws signals more clearly. The signal obtained from the SE and IR method are analyzed. Also, the effect of defect positions on the signal are discussed in this study.
The results show that the SE or IR methods can accurately determine the length of the pile, but the signal from the defects is not easy to interpret. However, DWT is effective to tell the defect signal on the frequency figure and highlight the defect signal.

1. Chow, Y.K., Phoon, K.K., Chow, W.F., and Wong, K.Y., “Low strain integrity testing of piles: three-dimensional effects,” Journal of Geotechnical and Geoenvironmental Engineering, Vol. 129, No. 11, pp. 1057-1062 (2003).
2. Davis, A.G., “Assessing reliability of drilled shaft integrity testing,” Transportation Research Record, Vol. 1633, pp. 108-116 (1998).
3. Davis, A.G., and Dunn, C.S., “From theory to field experience with the non-destructive vibration testing of piles,” Proceedings of the Institution of Civil Engineers. Part 2, pp. 571-593 (1974).
4. Ding X, Liu H, Liu J, Chen Y., “Wave propagation in a pipe pile for low strain integrity testing,” Journal of Engineering Mechanics, Vol. 137, No. 9, pp. 598-609 (2011).
5. Finno, R.J., and Gassman, S.L., “Impulse response testing of drilled shafts,” Jouranl of Geotechnical Environmental Engineering, ASCE , Vol. 124, No. 10, pp. 965-975 (1998).
6. Fukuhara, T., Kakurai, M., and Sugimoto, M., “Analytical evaluation of defective piles,” Proceedings of the 4th International Conference on the Application of Stress-Wave Theory to Piles, The Hague, the Netherlands, pp. 563-571 (1992).
7. Gassman, S.L., and Finno, R.J. “Impulse response evaluation of foundations using multiple geophones,” Journal of Performance of Constructed Facilities, Vol. 13, No. 2, pp. 82-89 (1999).
8. Harrell, A.S. and Stokoe, K.H., II, Integrity Evaluation of Drilled Piers by Stress Waves, Transportation Research Center, The University of Taxes at Austin, pp. 265-268 (1984).
9. Hartung, M., Meier K., and Rodatz, W., “Integrity testing on model pile,” Proceedings of the 4th International Conference on the Application of Stress-Wave Theory to Piles, Barends, F.B.J. Ed., Hague, Netherlands, Balkema, Rotterdam, pp. 265-271 (1992).
10. Higgs, J., “Integrity testing of piles by shock method,” Concrete, October, pp. 31-33 (1979).
11. Liao, S.T., “Nondestructive testing of piles,” Ph.D. Dissertation, Department of Civil Engineering, University of Texas, Austin, Texas, pp. 20-120 (1994).
12. Liao, S.T., and Roesset, J.M., “Dynamic response of intact piles to impulse loads,” International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 21, No. 4, pp. 255-275 (1997).
13. Lin, Y., Sanalone, M., and Catino, N.J., “Impact echo response of concrete shafts,” Geotechnical Testing Jouranl, Vol. 14, No. 2, pp. 121-137 (1991).
14. Malhotra, V.M., Testing Hardened Concrete: Nondestructive Methods, Iowa State University Press (1976).
15. Rausche, F., Likins, G.E., and Hussein, M., “Pile integrity by low and high strain impacts,” Proceedings of the 3rd International Conference on the Application of Stress-Wave Theory to Piles, Ottawa, pp. 44-45 (1988).
16. Sack, D.A., Slaughter, S.H., and Olson, L.D., “Combined measurement of unknown foundation depths and soil properties with nondestructive evaluation methods,” Journal of the Transportation Research Board, No. 1868, TRB, pp. 76-80 (2004).
17. Schellingerhout, A.J.G., “Quantifying pile defects by integrity testing,” Proceedings of the 4th International Conference on the Application of Stress Wave Theory to Piles, Baldema, Rotterdam, Brookfield, pp. 319-324 (1992).
18. Steinbach, J., and Veye, E., “Caisson evaluation by stress wave propagation method,” Journal of Geotechnical Engineering Division, ASCE, Vol. 101, No. GT4, pp. 361-387 (1975).
19. 王弘義，「基樁應力波非破壞檢測技術之比較評估」，碩士論文，朝陽
科技大學營建工程系（2003）。
20. 王景信，「平行震測法與超震波法在實務上之應用研究」，碩士論文，成功大學土工程學系（2006）。
21. 余柏宏，「獨立模型基樁完整性檢測訊號之比較評估」，碩士論文，朝陽科技大學營建工程系（2006）。
22. 邱志卿，「預鑄樁完整性檢測之探討與分析」，碩士論文，國立成功大學土木工程研究所（2007）。
23. 李俊男，「脈波反應法應用於基樁之模擬與分析」，碩士論文，國立成功大學土木工程研究所（2005）。
24. 李允仲，「音波回音法應用於基樁完整性檢測之實驗研究」，碩士論文，國立成功大學土木工程研究所（2009）。
25. 吳天珦，「穩態振動法應用於探測基樁長度之實驗研究」，碩士論文，國立成功大學土木工程研究所（2009）。
26. 吳多詠，「平行震測法應用於含樁帽基樁長度檢測之研究」，碩士論文，國立成功大學土木工程研究所（2011）。
27. 倪勝火、羅國峰，「小波轉換法應用於基樁音波回應法之分析研究」，中華民國非破壞檢測協會，第19卷，第1期（1-2），第4-15頁（2001）。
28. 倪勝火，「基樁的破壞性檢測與案例」，地工技術雜誌，第52期，第　49-62頁（1995）。
29. 倪勝火，羅國峯，周憲民，黃烟宏，「敲擊回應法檢測基樁與小波轉換法之應用簡介」，公共工程非破壞檢測研討會暨產學座談會，第65-92頁65-92頁(2005)。
30. 黃烟宏，「連續小波轉換應用於基樁完整性檢測之研究」，碩士論文，國立成功大學土木工程研究所（1996）。
31. 黃烟宏，「應力波應用於樁基礎完整性檢測技術之評估」，博士論文，國立成功大學土木工程研究所（2011）。
32. 許琍婷，「希伯特-黃轉換於音波回音法之應用」，碩士論文，國立成功大學土木工程研究所（2010）。
33. 廖述濤，「基樁之脈波反應測試及力學導納分析」，中華民國非破壞檢
測協會，第14卷，第2期（3-4），第94-103頁（1996）。
34. 賴正昇，「脈波回音法應用於基樁之模擬與分析」，成功大學木工程學系碩士論文，台南（2005）。
35. 謝旻勳，賴俊仁，余志鵬，「接收器位置對基樁缺陷檢測能力之影響」， 第十二屆非破壞檢測技術研討會（2004）。
36. 羅國峯，「音波回應法在基樁非破壞性檢測之探討與應用」，碩士論文，國立成功大學土木工程研究所（2000）。