Structural Engineering and Mechanics

  • 제52권3호
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  • Pages.507-523
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  • 2014
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Ultimate bearing capacity of conical shell foundations

  • Colmenares, J.E. (Department of Civil and Agricultural Engineering, Universidad Nacional de Colombia) ;
  • Kang, So-Ra (Development & Planning Department, Midas IT) ;
  • Shin, Young-Jin (DTS T-01 Project, Samsung Construction and Trading Corporation) ;
  • Shin, Jong-Ho (Department of Civil Engineering, Konkuk University)
  • 투고 : 2013.10.18
  • 심사 : 2014.05.28
  • 발행 : 2014.11.10
⟨ 이전 논문 다음 논문 ⟩

초록

Shell foundations have been employed as an alternative for the conventional flat shallow foundations and have proven to provide economical advantage. They have shown considerably improved performance in terms of ultimate capacity and settlement characteristics. However, despite conical shell foundations are frequently used in industry, the theoretical solutions for bearing capacity of these footings are available for only triangular shell strip foundations. The benefits in design aspects can be achieved through theoretical solutions considering shell geometry. The engineering behavior of a conical shell foundation on mixed soils was investigated experimentally and theoretically in this study. The failure mechanism was obtained by conducting laboratory model tests. Based on that, the theoretical solution of bearing capacity was developed and validated with experimental results, in terms of the internal angle of the cone. In comparison to the circular flat foundation, the results show 15% increase of ultimate load and 51% decrease of settlement at an angle of intersection of $120^{\circ}$. Based on the results, the design chart of modified bearing capacity coefficients for conical shell foundation is proposed.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea

참고문헌

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피인용 문헌

  1. Bearing capacity of micropiled-raft system vol.63, pp.3, 2017, https://doi.org/10.12989/sem.2017.63.3.417
  2. End-Bearing Capacity of Embedded Piles with Inclined-Base Plate: Laboratory Model Tests vol.146, pp.8, 2014, https://doi.org/10.1061/(asce)gt.1943-5606.0002304
  3. End bearing capacity of embedded pile with inclined base plate: Field dynamic and static tests vol.26, pp.3, 2014, https://doi.org/10.12989/gae.2021.26.3.261
  4. Bearing capacity of folded plate foundations in clay soil vol.19, pp.3, 2021, https://doi.org/10.5937/jaes0-30475
  5. Seismic performance of buildings supported by a shallow doubly-curved shell raft foundation vol.36, pp.None, 2022, https://doi.org/10.1016/j.istruc.2021.12.015