A Study on the Development of Design Chart for Drilled Shaft Socketed into Weathered Zone Using DCPT (Driving Cone Penetrometer Test)

DCPT를 이용한 풍화대 소켓 현장타설말뚝의 설계도표 개발에 관한 연구

  • Received : 2009.10.13
  • Accepted : 2010.04.25
  • Published : 2010.05.31

Abstract

For the development of design chart for drilled shafts socketed into weathered zone, the 6 bi-directional pile load tests with load transfer measurements done in two in-situ sites were performed. Also, DCPTs were performed in each test point. Maximum unit skin frictions and maximum unit end bearing capacities from pile load test results were analyzed. Inter-relationships between DCPT's characteristics were also analyzed. In the soils, the inter-relationships of maximum unit skin friction and DCPT appeared so low. But in the weathered zones, inter-relationships between maximum unit skin friction / maximum unit end bearing capacity and DCPT were so high that the coefficient of correlation is over 0.70.

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