グラウンドアンカー

[23-9-2-03] A practical non-destructive testing method for residual tensile force of ground anchors -Part 1:
Effect of bending stiffness of steel on natural frequency on free length of ground anchors

*Kazuki Nawa¹, Hideki Saito², Mitsuru Yamazaki³, Atsushi Yashima¹, Satoshi Tazumi¹, Yoshinobu Murata¹, Keizo Kariya¹, Kunio Aoike², Yoshinori Sone² (1. Gifu University, 2. OYO Co.,Ltd, 3. Central Nippon Highway Engineering Nagoya Co.,Ltd)

Keywords:ground anchors, non-destructive test , resonant frequency