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2022 Vol.21, Issue 4 Preview Page

Research Article

Numerical Evaluation of Skin Friction of Barrette Piles by Aspect Ratio and Soil Strength Changes

바렛말뚝의 형상비와 지반 강성에 따른 주면마찰력의 수치해석적 평가

Chae-Min Kim1
,
Byeong-Han Jeon2
,
Jun-Seo Jeon3*
,
Tae-Hyung Kim4
,
Jeong-Pyo Choi5
김 채민1
,
전 병한2
,
전 준서3*
,
김 태형4
,
최 정표5
1Member, Instructor, Depart. of Civil Engineering, Kyungsung Univ., 309 Suyeong-Ro, Nam-gu, Busan 48434, Republic of Korea
2Member, Manager, Institute of Technology, LT SAMBO, 217 Teheran-Ro, Gangnam-gu, Seoul 06142, Republic of Korea
3Member, Senior Researcher, Korea Institute of Civil Engineering and Building Technology., 283 Goyang-Daero, Ilsanseo-gu, Goyang 10223, Republic of Korea
4Member, Professor, Dept. of Civil Engrg., Korea Maritime and Ocean Univ., 727 Taejoung-ro, Yeongdo-gu, Busan 49112, Republic of Korea
5Non-Member, General Manager, Musung Construction Industrial Co. Ltd., 800 Mangyang-ro, Dong-gu, Busan 48777, Republic of Korea
*Corresponding Author
30 December 2022. pp. 13-20
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Abstract

In this study, the effect of aspect ratio and soil strength on the skin friction for barrette pile was evaluated using numerical analysis. The back analysis was conducted to obtain the friction coefficient between pile and soil using the experimental results of the static pile load test for the barrette pile installed at OOsite in Busan. A total of 36 simulations for the static pile load test were also conducted with respect to various aspect ratios and soil strengths. It was found that the skin friction increases as the aspect ratio increases and the change in increasing rate was remarkable near the ultimate skin friction. In addition, the effect of aspect ratio on the skin friction was investigated when the strength of soil at pile tip was varied.

Keywords
Barrette pile
Aspect ratio
Soil strength
Skin friction
Numerical analysis

본 연구에서는 바렛말뚝의 형상비 및 말뚝 주변 지반 강성 변화가 주면마찰력에 미치는 영향을 분석하였다. 유한요소 프로그램을 활용하여 부산 OO현장의 바렛말뚝 정재하시험 결과를 역해석 하였으며 이를 바탕으로 형상비 및 말뚝 주변 지반의 강성을 달리하여 총 36개의 수치해석을 수행하였다. 그 결과, 바렛말뚝의 형상비가 커질수록 주면마찰력은 증가하였으며 극한상태에 다다를수록 그 영향이 커짐을 확인할 수 있었다. 또한 말뚝 주변 지반 강성 변화에 따른 형상비 및 주면마찰력의 상관관계를 분석하였다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 21
  • No :4
  • Pages :13-20
  • Received Date : 2022-10-28
  • Revised Date : 2022-12-07
  • Accepted Date : 2022-12-08
  • DOI :https://doi.org/10.12814/jkgss.2022.21.4.013
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