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A Study on the Arching Effect due to Embankment Piles

성토지지말뚝에 의한 아칭효과 연구

  • Lee, Seung-Hyun (Division of Architecture, Architectural Engineering and Civil Engineering, Sunmoon University)
  • 이승현 (선문대학교 건축사회환경학부)
  • Received : 2017.05.23
  • Accepted : 2017.07.07
  • Published : 2017.07.31

Abstract

A full-scale field test was conducted to investigate the arching effect of an embankment pile. The arching effect calculated from the test results was compared with theoretical values. Measurements obtained from a load cell and an earth pressure cell during the field test reflected the arching effect of the embankment pile well. The arching effect measured by load cells for an embankment height of 3m or less was smaller than the theoretical value with the assumption of plain strain.The measured effect for a height of 4 m or more was larger than the theoretical value. In contrast to the consistent decrease of the theoretical arching effect, the arching effect obtained from the field test shows continually increasing trends. The arching effects calculated from the earth pressure cells were greater than those from the theory under the plain strain assumption, but the trend was similar to the theoretical one. The arching effects measured by the earth pressure cells an embankment heights of 2, 3, 4, 5, and 6 m were 1.05, 1.23, 1.29, 1.28, and 1.29 times greater than those from the theory under the assumption of plain strain. The arching effects from the field test were much greater than those from the theory under the installation of a pile grid.

Keywords

Full scale field test;Embankment pile;Arching efficacy;Measurement;Plain strain

Acknowledgement

Supported by : 선문대학교

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