Method for evaluating the soundness of underground walls

Abstract

Abstract The elastic wave caused by the input at the wallhead spreads throughout the plane of the wall, and thus, inspecting the soundness of underground walls using a pile integrity test (PIT) is a challenging task. This paper presents a feasible method for evaluating the soundness of underground walls via a PIT. In particular, by applying a low‐pass filter to the reflected wave recorded at the wall head, the wave components reflected from the wall ends and cracks are effectively separated from the components reflected from the wall sides. Hence, through the proposed strategy, the wave can be clearly identified for soundness evaluation.

Keywords

• existing pile
• pile integrity test
• reflected wave
• reuse
• soundness
• underground wall