Behaviors of Soil-cement Piles in Soft Ground

연약지반에 설치된 소일시멘트말뚝의 거동

  • Kim, Young-Uk (Dept. of Civil & Environ. Engrg., Myongji Univ.) ;
  • Kim, Byoung-Il (Dept. of Civil & Environ. Engrg., Myongji Univ.) ;
  • Xiaohong Bai (Dept. of Civil Engrg., Taiyuan Univ. of Technology)
  • Published : 2003.06.01

Abstract

This study was undertaken to investigate behavior characteristics of soil-cement piles in composite foundations through computer analysis. The soil-cement piles with cushion subjected to the vertical central loading only were analyzed using the program - “ABAQUS”. The investigation was conducted for various conditions including soil property, pile dimension, replacement ratio, pile/soil modular ratio, and load intensity. The results of analysis provided not only the load transfer and settlement behaviors but also the effective pile length and load distribution between a pile and soil. It was concluded that in the design of composite foundations, the modular ratio and replacement ratio are two design parameters.

복합기초의 한 형식인 소일시멘트 말뚝의 거동 특성을 컴퓨터 해석을 통하여 연구하였다. 연직하중을 받는 소일시멘트말뚝의 거동 특성을 ABAQUS라는 상용 프로그램을 사용하여 조사하였으며 해석조건은 지반물성치, 말뚝의 길이, 치환율, 강성비, 하중 조건 등을 달리하여 실시하였다. 해석 결과는 하중의 전이 및 침하특성 뿐만 아니라 효과적인 말뚝길이와 말뚝 및 지반의 하중 분배에 관하여서도 유용하게 쓰일 수 있음이 판명되었다. 또한 복합기초를 설계할 때 강성비, 치환율이 설계에 가장 큰 영향을 미치는 인자로 나타났다.

Keywords

References

  1. ABAQUS/Standard User's Manual(Version 5.6) ABAQUS
  2. Soil Improvement, History, Capabilities and Outlook ASCE
  3. Geotechnical Special Publication no.12 Soil improvement, A Ten Year Update ASCE
  4. Proceedings, Foundation Engineering:Current Principles and Practices v.1 Design Methodology for Foundations on Stone piles Bachus,R.C.;Barksdale,R.D.
  5. Introductory Soil Mechanics and Foundations:Geotechnical Engineering Sowers,G.E.