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Analysis of large diameter pipe pile drivability in tokyo bay using piezocone data

Analysis of large diameter pipe pile drivability in tokyo bay using piezocone data
Analysis of large diameter pipe pile drivability in tokyo bay using piezocone data

The piezocone penetration test (CPTU) provides near continuous measurements of three independent parameters: tip resistance (qt), sleeve friction (fs), and penetration pore pressure (u2). The tip resistance and sleeve friction are roughly analogous to pile end bearing resistance (qb) and the shaft resistance (τf) near the pile tip during installation, respectively, while the penetration pore pressure provides an indication of the drainage conditions during cone penetration. However, due to the differences in diameter between a pile and a CPT, as well as the differences in installation method, CPTU parameters (qt and fs) must be modified to assess the values of unit base and shaft resistance (qb and τf) applicable to the static capacity of the pile and the soil resistance to driving (SRD). In this paper, back-analyses of installation records from eight large diameter (1.2 to 1.8m) open ended pipe piles driven through soft clays, silts, and sands at the Tokyo Port Bay Bridge site are conducted using the results of adjacent CPTUs. These analyses provide guidance on evolving methods for interpreting CPTU data to provide predictions of short term SRD, in addition to long term static capacity.

Friction, Japan, Parameters, Pipe piles, Pore pressure
1488-1497
American Society of Civil Engineers (ASCE)
Schneider, J.A.
a1977f2e-3b1e-4d0b-86ac-c0c9b12de3b6
White, D.J.
a986033d-d26d-4419-a3f3-20dc54efce93
Kikuchi, Y.
8b223771-7e8c-4b38-abe2-054f7462c6d5
Schneider, J.A.
a1977f2e-3b1e-4d0b-86ac-c0c9b12de3b6
White, D.J.
a986033d-d26d-4419-a3f3-20dc54efce93
Kikuchi, Y.
8b223771-7e8c-4b38-abe2-054f7462c6d5

Schneider, J.A., White, D.J. and Kikuchi, Y. (2010) Analysis of large diameter pipe pile drivability in tokyo bay using piezocone data. In GeoFlorida 2010: Advances in Analysis, Modeling and Design - Proceedings of the GeoFlorida 2010 Conference. American Society of Civil Engineers (ASCE). pp. 1488-1497 . (doi:10.1061/41095(365)150).

Record type: Conference or Workshop Item (Paper)

Abstract

The piezocone penetration test (CPTU) provides near continuous measurements of three independent parameters: tip resistance (qt), sleeve friction (fs), and penetration pore pressure (u2). The tip resistance and sleeve friction are roughly analogous to pile end bearing resistance (qb) and the shaft resistance (τf) near the pile tip during installation, respectively, while the penetration pore pressure provides an indication of the drainage conditions during cone penetration. However, due to the differences in diameter between a pile and a CPT, as well as the differences in installation method, CPTU parameters (qt and fs) must be modified to assess the values of unit base and shaft resistance (qb and τf) applicable to the static capacity of the pile and the soil resistance to driving (SRD). In this paper, back-analyses of installation records from eight large diameter (1.2 to 1.8m) open ended pipe piles driven through soft clays, silts, and sands at the Tokyo Port Bay Bridge site are conducted using the results of adjacent CPTUs. These analyses provide guidance on evolving methods for interpreting CPTU data to provide predictions of short term SRD, in addition to long term static capacity.

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More information

Published date: 2010
Venue - Dates: GeoFlorida 2010: Advances in Analysis, Modeling and Design Conference, West Palm Beach, FL, United States, 2010-02-20 - 2010-02-24
Keywords: Friction, Japan, Parameters, Pipe piles, Pore pressure

Identifiers

Local EPrints ID: 419882
URI: http://eprints.soton.ac.uk/id/eprint/419882
PURE UUID: 13b431e3-5753-48f3-83fc-533066419e31
ORCID for D.J. White: ORCID iD orcid.org/0000-0002-2968-582X

Catalogue record

Date deposited: 23 Apr 2018 16:30
Last modified: 05 Nov 2019 01:26

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