TY - Journal of Yangtze River Scientific Research Institute A1 - GUO Qing-qing,CHEN Wei-wen,ZHANG Shao-he T1 - Research on the Limitations of Wave Reflection Method in Low Strain Integrity Testing for Hand-dug Pile Y1 - 2014-01-26 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 62 EP - 67 VL - 31 IS - 2 UR - http://ckyyb.crsri.cn N1 - 10.3969/j.issn.1001-5485.2014.02.013 ER -