Journal of the Computational Structural Engineering Institute of Korea (한국전산구조공학회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Structural Behavior Analysis of Cap Shaped as an Arch for Suction-Installed Cofferdam

아치형 석션 가물막이 상판의 구조거동 분석

  • Kim, Jeongsoo (Korea BIM Research Center, Korea Institute of Civil Engineering and Building Technology) ;
  • Jeong, Youn-Ju (Division of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Park, Min-Su (Division of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Song, Sunghoon (Division of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology)
  • 김정수 (한국건설기술연구원 국가BIM연구센터) ;
  • 정연주 (한국건설기술연구원 인프라안전연구본부) ;
  • 박민수 (한국건설기술연구원 인프라안전연구본부) ;
  • 송성훈 (한국건설기술연구원 인프라안전연구본부)
  • Received : 2020.09.29
  • Accepted : 2020.10.12
  • Published : 2020.12.31
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Abstract

In this study, the behaviors of a suction cap shaped as an arch were analyzed using finite element models. The fundamental structural behaviors of both flat- and arch-type caps were compared, and the advantages of the arch-shaped cap were explained. Moreover, the effects of geometric parameters and stiffener arrangements on the stress and deformation of the arch-shaped caps were investigated by comparisons of the changes in the behaviors of the caps. Additionally, the effects of boundary condition at the edge of the cap were analyzed to study the interactions between the cap and cofferdam walls; these results were used to derive the fundamental structural design of stiffened arch caps. Unlike flat caps, the results showed that ring stiffeners could improve the structural behaviors of arch caps remarkably, while the contributions of the radial stiffeners to the structural behaviors of the caps are dependent on constraints at the edges of the caps.

본 연구는 유한요소 해석모델을 이용해 아치 형상을 갖는 석션 상판의 거동을 분석하였다. 평판형 및 아치형 상판의 기본적인 구조성능에 대해 비교함으로써 아치형 상판의 이점을 설명하였다. 또한 아치형 상판의 기하 및 보강재 배치 변화에 따른 거동 변화를 비교하여 각 인자가 상판의 응력 및 변형에 미치는 영향을 조사하였다. 추가로 아치형 상판 가장자리의 경계조건 영향을 수치적으로 분석함으로써, 아치형 상판의 보강재 배치와 가물막이 벽체와의 상호거동 영향을 규명하고 이를 통해 보강형 아치형 상판의 구조설계의 기본 개념을 도출하였다. 평판형 상판과 달리 환형 보강재가 아치형 상판의 구조 거동을 확연히 개선시킬 수 있음을 확인하였으며, 방사 보강재의 역할은 상판 가장자리의 구속상태에 의존적이었다.

Keywords

References

  1. AISC Specification (2005) Specification for Structural Steel Buildings, ANSI/AISC 360-05, Chicago.
  2. Alfatiawi, T., Mansori, N., Alsultani, A. (2020) Stability Assessment of Diaphram Cellular Cofferdams Subjected to Severe HydroStructural Conditions, Open Civil Eng. J., 14(1), pp.44-55. https://doi.org/10.2174/1874149502014010044
  3. Giresini, L., Butenweg, C., Andreini, A., Falco, A.D., Sassu, M. (2014) Numerical Calibration of a Macro-element for Vaulted Systems in Historic Churches, Proc. 9th Int. Conf. Structural Analysis of Historical Constructions, Mexico, pp.1-12.
  4. Jeong, Y.J., Kim, J., Park, M.S., Song, S. (2018) Hydrodynamic Behaviors of Large Steel-Cylindrical Cofferdam System For Marine Structures Construction, Coastal Eng. Proc., 1(36), p.26. https://doi.org/10.9753/icce.v36.structures.26
  5. Kim, H., Choi, J., Gwon, Y. (2020) The Structural Characteristics of the Temporary Cofferdam in Accordance with the Shape and Size Obtained from Numerical Analysis, J. Korean Geotech. Soc., 36(1), pp.29-38.
  6. Kim, J. (2019) Numerical Investigation on Structural Behavior of a Lid with Stiffeners for Suction-installed Cofferdams, J. Korea Acad.-Ind. Cooper. Soc., 20(10), pp.7-17.
  7. Kim, J., Jeong, Y.J., Park, M.S. (2017) Structural Behaviors of Cylindrical Cofferdam with Plane and Corrugated Cross Section under Offshore Conditions, Int. J. Emerg. Technol. & Adv. Eng., 7(9), pp.334-340.
  8. Kim, J., Jeong, Y.J., Park, M.S., Song, S. (2018a) Numerical Investigation on Buckling Behavior of Suction-installed Cofferdam, Int. J. Eng. Res. & Technol., 7(11), pp.199-202.
  9. Kim, J., Jeong, Y.J., Park, M.S., Song, S. (2018b) Structural Analysis of Cofferdam Subjected to Wave and Suction Pressure, Open J. Civil Eng., 18(4), pp.555-569.
  10. Kim, J.H., Kim, H.M., Lee, J.H. (2019) Evaluation of Suction Bucket Installation at Low Water Depth Using Model Test, Proc. KSCE 2019 Convention, Pyoungchang, pp.1135-1136.
  11. Lee, J., Choi, K., Kim, D . (2019) Effect of Ground Boundary Condition on Evaluation of Blast Resistance Performance of Precast Arch Structures, J. Comp. Struct. Eng. Inst. Korea, 32(5), pp.287-296. https://doi.org/10.7734/COSEIK.2019.32.5.287
  12. Lee, J.H., Cho, J.W., Kim, H.M. (2017) Installation Method of Large Circular Steel Pipe Using Suction Pressure, Proc. of KSCE 2017 Convention, Busan, pp.1554-1555.
  13. Oh, D. (2007) Development of Dry Process Caisson Method for Maintenance of Submerged Harbor Structure, Master Thesis, National Korea Maritime and Ocean University, Busan, Korea.
  14. Park, K.W., Cho, J.H. (2014) The Suction Bucket Foundation Design of Offshore Wind Turbine by Eurocode, Yooshin Technical Report, 21, pp.131-142.
  15. Park, M.C., Lee, J.S., Kim, D., Yu, J.D. (2019) Small-scaled Laboratory Experiments for Dynamic Stability Monitoring of Large Circular Steel Pipe Cofferdam of Marine Bridge Foundation, J. Korean Geotech. Soc., 35(12), pp.123-134.
  16. Song, J.U., Lee, J.S., Park, M.C., Byun, Y.H., Yu, J.D. (2018) Laboratory Experiments for Evaluating Dynamic Response of Samll-scaled Circular Steel Pipe, J. Korean Geotech. Soc., 34(11), pp.81-92. https://doi.org/10.7843/KGS.2018.34.11.81
  17. Timoshenko, S., Woninowsky-Krieger, S. (1987) Theory of Plates and Shells, McGraw-Hill, 2nd Edition (re-issued), pp.51-78.
  18. Vicent, S., Tran, V.A., Kim, S.Y. (2017) Numerical Investigation on Seepage Stability in Offshore Bucket Cut-off Walls, J. Korean Geotech. Soc., 33(11), pp.73-82. https://doi.org/10.7843/kgs.2017.33.11.73
  19. Vicent, S., Tran, V.A., Kim, S.Y. (2018) Numerical Investigation on Seepage Discharge inside a Cylindrical Cut-off Wall, J. Korean Geotech. Soc., 34(10), pp.51-60. https://doi.org/10.7843/KGS.2018.34.10.51
  20. Yang, C.H. (1987) Structural Mechanics, Chung Moon Kack, 4th Edition, p.227.