Geomechanics and Engineering

  • 제18권6호
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  • Pages.575-584
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  • 2019
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

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Effect of groundwater fluctuation on load carrying performance of shallow foundation

  • Park, Donggyu (Dongah Construction Industrial, School of Civil and Environmental Engineering, Yonsei University) ;
  • Kim, Incheol (School of Civil and Environmental Engineering, Yonsei University) ;
  • Kim, Garam (School of Civil and Environmental Engineering, Yonsei University) ;
  • Lee, Junhwan (School of Civil and Environmental Engineering, Yonsei University)
  • 투고 : 2019.12.03
  • 심사 : 2019.08.05
  • 발행 : 2019.08.30
⟨ 이전 논문 다음 논문 ⟩

초록

The groundwater level (GWL) is an important subsoil condition for the design of foundation. GWL tends to fluctuate often with seasonal variation, which may cause unexpected, additional settlements with some reductions in the safety margin of foundation. In this study, the effects of fluctuating GWL on the load carrying and settlement behavior of footing were investigated and quantified. A series of model load tests were conducted for various GWL and soil conditions using a hydraulically-controlled chamber system. Changes in load level and rising and falling GWL fluctuation cycle were considered in the tests. Settlements during GWL rise were greater than those during GWL fall. The depth of the GWL influence zone ($\underline{d}_{w,inf}$) varied in the range of 0.3 to 1.5 times footing width and became shallower as GWL continued to fluctuate. Design equations for estimating GWL-induced settlements for footings were proposed. The GWL fluctuation cycle, load level and soil density were considered in the proposed method. Changes in settlement and factor of safety with GWL fluctuation were discussed.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea (NRF), Korea Institute of Energy Technology Evaluation and Planning (KETEP)

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피인용 문헌

  1. Influence of the groundwater level on the bearing capacity of shallow foundations on the rock mass vol.80, pp.9, 2021, https://doi.org/10.1007/s10064-021-02368-2