| Issue |
E3S Web Conf.
Volume 457, 2023
International Scientific and Practical Symposium “The Future of the Construction Industry: Challenges and Development Prospects” (FCI-2023)
|
|
|---|---|---|
| Article Number | 02034 | |
| Number of page(s) | 12 | |
| Section | Integrated Safety in Construction | |
| DOI | https://doi.org/10.1051/e3sconf/202345702034 | |
| Published online | 05 December 2023 | |
Interpretation of Reflectograms of Seismic Acoustic Flaw Detection of Piles
Moscow State University of Civil Engineering, Yaroslavskoe shosse 26, Moscow, 129337, Russia
1 Corresponding author: degaev@inbox.ru
The paper presents the results of continuity study of secant piles in excavated pits at microtunnelage by means of seismoacoustic flaw detection. The piles under study were placed in the work pits and the reception pits excavated for transfer of utilities of the urban networking infrastructure. The importance of the quality control is stipulated by safety assurance of the performance during utility re-routing. The piles provide for the important function of pit wall reinforcement against soil slides due to groundwater pressure. Reflectograms were provided of the auger-cast grout piles under study with subsequent analysis and confirmation of the design length and continuity of the pile trunk. The results of the test demonstrate a correlation of the soil uniformity with the signal regularity. On the interface of two soil layers of different density, the sound wave is reflected and partially passes further generating characteristic false defect peaks. The provided results are of practical value during reflectogram processing, allowing for experimental recognition of interferences and exclusion of flaws.
Key words: Seismo acoustics / Quality control / Continuity assessment / Concrete strength / Pile length control
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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