Comparison of penetration resistance and vertical capacity of short piles installed by Standard Press-in in loose sand

Y Ishihara, M Eguchi, Michael Brown, J Koseki

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Abstract

In the Press-in Method, a vertical jacking force required for installing a pile is automatically measured for every single pile. This information is expected to be utilized to confirm the vertical performance of the pile. In this paper, results of a series of large-scale model tests are reported to compare the resistance during installation and during static load test. The test pile was a closed or open-ended tubular pile with an outer diameter of 318.5 mm, embedded in a loose sand to around 6 m. Phenomena of pile set-up or set-down were observed in some cases. Through literature review and detailed analyses of the experimental data, the cause of the set-down was concluded to be mainly due to the pile installation being terminated at a depth where the soil strength decreased with depth and to a lesser extent because negative pore water pressure was generated during installation.
Original languageEnglish
Pages208
Number of pages219
Publication statusPublished - Jun 2021
EventSecond International Conference on Press-in Engineering - Kochi, Kochi, Japan
Duration: 19 Jun 202120 Jun 2021
https://icpe-ipa.org/

Conference

ConferenceSecond International Conference on Press-in Engineering
Abbreviated titleICPE2021
Country/TerritoryJapan
CityKochi
Period19/06/2120/06/21
Internet address

Keywords

  • Press-in piles
  • Pile foundation

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