Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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Applicability of the Pile-Supported Embankment in Korea

성토지지말뚝공법의 국내 적용성 분석

  • Received : 2015.12.15
  • Accepted : 2016.03.16
  • Published : 2016.03.31
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Abstract

Stability analysis was conducted to analyze the application of pile-supported embankment to concrete slab track on the soft ground in Korea. Pile efficiency and tension of geosynthetics in accordance with the hight of embankment and the depth of soft soil were carried out by theoretical and numerical methods. Theoretical method predicted more conservatively than the numerical method for all the cases presented herein. The settlement stability is satisfied to allowable criteria of high speed railway in Korea. The pile-supported embankment has great potential for application to soft ground condition.

성토지지말뚝 공법의 국내 적용성 평가를 위해 이론적인 설계방법과 수치해석적인 방법을 통해 거동특성을 분석하고 침하 안정성 검토를 수행하였다. 성토고와 연약지반 두께에 따른 말뚝의 효율과 보강재의 인장력 및 침하 안정성을 분석한 결과 이론식의 경우 연약지반 특성에 따른 거동특성을 반영하지 못하고 있으며, 수치해석 결과 대비 다소 보수적인 결과가 나타났다. 수치해석에서는 이론식에서 제시한 성토고 높이 보다 작은 성토고에서는 말뚝 효율의 급격한 감소가 나타났으며, 연약층 대비 성토고가 높은 경우에도 말뚝의 효율의 감소가 나타났다. 기존 이론식을 바탕으로 설계가 이뤄질 경우 성토노반의 침하 안정성은 확보되는 것으로 나타났다. 성토지지말뚝은 국내의 고속철도의 침하관리기준을 확보할 수 있는 토공 침하억제공법으로 그 적용성이 기대된다.

Keywords

References

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