Geomechanics and Engineering

  • 제13권5호
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  • Pages.757-774
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  • 2017
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Variability of subgrade reaction modulus on flexible mat foundation

  • Jeong, Sangseom (School of Civil and Environmental Engineering, Yonsei University) ;
  • Park, Jongjeon (School of Civil and Environmental Engineering, Yonsei University) ;
  • Hong, Moonhyun (School of Civil and Environmental Engineering, Yonsei University) ;
  • Lee, Jaehwan (Road Infrastructure Maintenance Office, KISTEC)
  • 투고 : 2016.10.01
  • 심사 : 2017.04.25
  • 발행 : 2017.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

The subgrade reaction modulus of a large mat foundation was investigated by using a numerical analysis and a field case study. The emphasis was on quantifying the appropriate method for determining the subgrade reaction modulus for the design of a flexible mat foundation. A series of 3D non-linear FE analyses are conducted with special attention given to the subgrade reaction modulus under various conditions, such as the mat width, mat shape, mat thickness, and soil condition. It is shown that the distribution of the subgrade reaction modulus is non-uniform and that the modulus of subgrade reaction at both the corners and edges should be stiffer than that at the center. Based on the results obtained, a simple modification factor for the subgrade reaction modulus is proposed depending on the relative positions within the foundation in weathered soil and rocks.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea (NRF), Ministry of Land, Infrastructure and Transport of Korean government

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