Load-settlement characteristics of offshore drilled shafts using static bi-directional loading test

Hoonil Seol, Sangseom Jeong, Geunha Lee, Zucheol Kim, Yangku Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

New Songdo city is a master-planned international business center to be developed on 1,500 acres of reclaimed land along Incheon's waterfront, 40 miles south of Seoul, Korea and connected to the new Incheon international airport by an 11.7km highway Incheon 2nd bridge. Pile foundations of high-rise buildings and the Incheon 2nd bridge in new Songdo city consist of large diameter drilled shafts, up to 55m long, which were socketed to rocks. Drilled shafts constructed for high-rise buildings on the reclaimed land were designed by considering only shaft resistance, while those of Incheon 2nd bridge were done by consider end-bearing as well as shaft resistance. This paper describes the load distribution and settlement of rock socketed drilled shafts subjected to axial loads. The emphasis was on quantifying the bearing capacity placed from the shafts to surrounding rock based on the static bi-directional loading test (osterberg cell test) performed on full scaled drilled shafts. The load tests consisted seven drilled shafts bearing on the weathered rock, soft rock and hard rock; three shafts were installed in the land area and four shafts were done in the offshore area. The results of the seven load tests are presented in terms of load-deformation curves and load transfer curves. Based on such results, the design loads of each site are determined and discussed.

Original languageEnglish
Title of host publicationProceedings of The Sixteenth 2006 International Offshore and Polar Engineering Conference, ISOPE 2006
Pages508-514
Number of pages7
Publication statusPublished - 2006
Event16th 2006 International Offshore and Polar Engineering Conference, ISOPE 2006 - San Francisco, CA, United States
Duration: 2006 May 282006 Jun 2

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other16th 2006 International Offshore and Polar Engineering Conference, ISOPE 2006
CountryUnited States
CitySan Francisco, CA
Period06/5/2806/6/2

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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