Defects Discrimination and Error Analysis of Wharf Bored Piles Detected by Low Strain Reflection Wave Method

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Abstract:

Based on the field test of bored piles at wharf detected by low strain reflection wave method, time-history curve features and defect position of intact piles and defective piles contrastively analyzed, with verification of on-site drilled core testing. The reason for discrimination error between specific defect position and actual data when processing low strain reflection wave method are derived, based on the analysis of effect of defective piles strengthened by pressure grouting method retested by low strain testing, practical measures of on-site low strain reflection wave testing are purposed to improve detection accuracy.

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589-595

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July 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] XU Zhi-ping. Application of PIT in Testing of Cast-in-Situ Concrete Piles for Bridges [J]. China Harbour Engineering. 2004(5): 47-48.

Google Scholar

[2] GUO De-Ling. Case Study of Low Strain Integrity Testing of Shallow Defects of Bored Pile [J]. Science & Technology Information 2012(11): 380, 393, 394.

Google Scholar

[3] JING Wei-zhuang, LIU Dong-jia, SHUAI Chang-e. The Data Processing of Low Strain Test Pile on Cast-in-situ Bored Pile and the Matching Analysis[J]. Chinese Journal of Engineering Geophysics. 2009, 6(1): 105-110.

Google Scholar

[4] WANG Kai-jun, GUO Jia-kai. Cheng Shi Jian she Li Lun Yan Jiu. Application of low strain reflected wave method in the quality testing of concrete grouting pile [J]. ChengShi Jianshe LiLun Yan Jiu 2011(14).

Google Scholar

[5] KE Zhai-bang, LIU Dong-Jia. Numerical computation of axisymmetric problems in low strain integrity tests on piles [J]. Chinese Journal of Geotechnical Engineering. 2006, 28(12): 2111-2115.

Google Scholar

[6] LIU Dong-Jia, LIU Yu-zhou, WANG Jie-ying. Theoretical study on torsional wave applied in low strain dynamic testing of piles [J]. Chinese Journal of Geotechnical Engineering. 2003, 25(3): 283-287.

Google Scholar

[7] WANG Jian-hua, ZHI Sheng-ying. Daming Coefficients of Pile-soil Interation with Low Strain [J]. Chinese Journal of Rock Mechnics and Engineering. 2007, 26(9): 1800-1808.

Google Scholar

[8] HU Xin-fa,LIU Jian-xin. Study of Inaccuracy of P-wave Velocity in Piles by Low Strain Integrity Testing [J]. Chinese Journal of Rock Mechanics and Engineering2013(z2): 4183-4189.

Google Scholar

[9] ZHANG Liang-jun, WANG Jing-tao, LI Guo-cheng. Application of Wavelet Transforming Integrity Testing of Piles [J]. Chinese Journal of Rock Mechnics and Engineering. 2002, 21(11): 1735-1738.

Google Scholar

[10] ZHANG Xian-min, LI Shao-bo. Determination of Pile's Defect Degree with Low-strain Energy Analysis [J]. Chinese Journal of Rock Mechnics and Engineering. 2006, 25(z1): 3198-3205.

Google Scholar

[11] DING Xuan-ming, CHEN Yu-min, KONG Gang-qiang. Formation mechanism of velocity waves in low strain integrity testing of PCC pile[J]. Rock and Soil Mechanics. 2012, 33(1): 154-161.

Google Scholar

[12] FEI Kang,LIU Han-Long,ZHANG Ting. Three-dimensional effects in low strain integrity test of PCC pile [J]. Rock and soil mechanics. 2007, 28(6): 1095-1102.

Google Scholar

[13] LU Zhi-tang,WANG Zhi-liang,LIU Dong-jia. Analysis of 3-D Effects in Low Strain Testing of Pipe Pile [J]. Journal of Tongji University (Natural Science) 2012, 40(11): 1603-1607, 1653.

Google Scholar