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2014 Vol.30, Issue 12 Preview Page
Development of Analysis Method for Mat Foundations Considering Coupled Soil Springs

지반의 상호작용을 고려한 전면기초의 해석기법 개발

Jae-Hwan Lee1
,
Sang-Seom Jeong2
,
Joon-Kyu Lee3
이 재환1
,
정 상섬2
,
이 준규3
1Graduate Student, Dept. of Civil Engrg., Yonsei Univ.
2Prof., Dept. of Civil Engrg., Yonsei Univ.
3Ph.D, Dept. of Civil Engrg., Yonsei Univ.
1연세대학교 토목공학과 박사과정
2연세대학교 토목공학과 교수
3연세대학교 토목공학과 박사 후 연구원
교신저자. Corresponding Author. 
31 December 2014. pp. 41-49
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Abstract

The 3D numerical analysis is carried out to investigate the settlement behavior of flexible mat foundations subjected to vertical loads. Special attention is given to the improved analytical method (YS-MAT) that reflects the mat flexibility and soil spring coupling effect. The soil model captures the stiffness of the soil springs as well as the shear interaction between the soil springs. The proposed method has been validated by comparing the results with other numerical methods and a field measurement on mat foundation. Through comparative studies, the settlement of the proposed method was in relatively good agreement with those of a field measurement and other numerical methods. The results permit us to estimate the response of the mat foundation subjected to vertical loads that should be taken into account in the combination of mat flexibility and soil continuity characteristics.

Keywords
Soil-structure interaction
Mat foundation
Soil spring
Coupling effect
Settlement

본 연구에서는 기존 근사해석 프로그램의 간편함을 유지하면서 보다 정밀성이 확보된 3차원 근사해석기법(YS-MAT)을 개발하였다. 전면기초는 6개의 자유도를 가진 평면쉘 요소로 모델링하여 기초의 연성거동을 고려할 수 있도록 하였으며, 지반스프링의 상호작용을 고려할 수 있도록 하였다. 기존의 해석기법, 유한요소해석 및 현장계측값과의 비교･분석 결과, 본 해석기법이 대단면 전면기초의 침하 거동을 비교적 정확히 산정하는 것으로 판단되며, 이러한 검증을 토대로 실제 전면기초 예비설계에 적용 가능함을 확인할 수 있었다.

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Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 30
  • No :12
  • Pages :41-49
  • Received Date : 2014-10-15
  • Revised Date : 2014-11-27
  • Accepted Date : 2014-12-02
  • DOI :https://doi.org/10.7843/kgs.2014.30.12.41
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