Advances in concrete construction

  • 제9권5호
  • /
  • Pages.503-510
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  • 2020
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  • 2287-5301(pISSN)
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  • 2287-531X(eISSN)
테크노프레스 (Techno-Press)
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Structural response of concrete gravity dams under blast loads

  • Sevim, Baris (Department of Civil Engineering, Yildiz Technical University) ;
  • Toy, Ahmet Tugrul (Department of Civil Engineering, Yildiz Technical University)
  • 투고 : 2019.05.29
  • 심사 : 2020.05.09
  • 발행 : 2020.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

Concrete dams are important structures due to retaining amount of water on their reservoir. So such kind of structures have to be designed against static and dynamic loads. Especially considering on critical importance against blasting threats and environmental safety, dams have to be examined according to the blast loads. This paper aims to investigate structural response of concrete gravity dams under blast loads. For the purpose Sarıyar Concrete Gravity Dam in Turkey is selected for numerical application with its 85 m of reservoir height (H), 255 m of reservoir length (3H), 72 m of bottom and 7 m of top widths. In the study, firstly 3D finite element model of the dam is constituted using ANSYS Workbench software considering dam-reservoir-foundation interaction and a hydrostatic analysis is performed without blast loads. Then, nearly 13 tons TNT explosive are considered 20 m away from downstream of the dam and this is modeled using ANSYS AUTODYN software. After that explicit analyses are performed through 40 milliseconds. Lastly peak pressures obtained from analyses are compared to empirical equations in the literature and UFC 3-340-02 standard which provide unified facilities criteria for structures to resist the effects of accidental explosions. Also analyses' results such as displacements, stresses and strains obtained from both hydrostatic and blasting analysis models are compared to each other. It is highlighted from the study that blasting analysis model has more effective than the only hydrostatic analysis model. So it is highlighted from the study that the design of dams should be included the blast loads.

키워드

과제정보

This research has been supported by Yildiz Technical University Scientific Research Projects Coordination Department. Project Number: 2015-05-01-DOP02.

참고문헌

  1. Afriyie, G.A. (2014), "Effects of explosions on embankment dams", Msc Thesis, Carleton University, Ottawa, Ontario.
  2. Altunisik, A.C. and Sesli, H. (2015), "Dynamic response of concrete gravity dams using different water modelling approaches", Comput. Concrete, 16(3), 429-448. https://doi.org/10.12989/cac.2015.16.3.429.
  3. ANSYS AUTODYN (2019), Swanson Analyses Systems, Ansys Inc., USA.
  4. ANSYS Workbench (2019), Swanson Analyses Systems, Ansys Inc., USA.
  5. Bayraktar, A., Dumanoglu, A.A. and Akkose, M. (2002), "The effect of hydrodynamic pressures on the dynamic response of concrete gravity dams for out-of-phase asynchronous ground motion by the lagrangian aprooach", Tech. J.-Digest, 13(65), 783-796.
  6. Brode, H.L. (1955), "Numerical solution of spherical blast waves", J. Appl. Phys., 26(6), 766-775. https://doi.org/10.1063/1.1722085.
  7. CCE (1955), "Sariyar dam", Chamb. Civil Eng., Turkey Eng. News, 5, 7-10.
  8. Henrych, J. (1979), The Dynamics of Explosion and Its Use, Elsevier, New York, USA.
  9. Hopkinson, B. (1914), "A method of measuring the pressure produced in the detonation of high explosives or by the impact of bullets", Philios. Tran. R. Soc. London Ser. A, Contain. Paper. Math. Phys. Charact., 213, 437-456.
  10. Kaleteh, F. (2017), "Dynamic failure analysis of concrete dams under air blast", Proceedings of the Sixth International Conference on Advances in Civil, Structural and Environmental Engineering, Rome, Italy.
  11. Karabulut, M. and Kartal, M.E. (2019), "Earthquake response of roller compacted concrete dams including galleries", Struct. Eng. Mech., 72(2), 141-153. https://doi.org/10.12989/sem.2019.72.2.141.
  12. Karabulut, M. and Kartal, M.E. (2020), "Seismic analysis of roller compacted concrete (RCC) dams considering effect of viscous boundary conditions", Comput. Concrete, 25(3), 255-266. https://doi.org/10.12989/cac.2020.25.3.255.
  13. Karlos, V. and Solomos, G. (2013), "Calculation of blast loads for application to structural components", Administrative Arrangement No JRC 32253-2011 with DG-HOME Activity A5, Blast Simulation Technology Development.
  14. Kinney, G.F. and Graham, K.J. (1985), Explosive Shocks in Air, Springer Publishing Company, Berlin, Germany.
  15. Olmati, P., Petrini, F. and Bontepi, F. (2013), "Numerical analyses for the structural assessment of steel buildings under explosions", Struct. Eng. Mech., 45(6) 803-819. https://doi.org/10.12989/sem.2013.45.6.803.
  16. Parkes, J., Kelly, H., Munfakh, G. and Choi, S. (2013), "Analyzing the impacts of explosions on dams and levees", Saf. Secur. Eng., 134, 307-318. http://dx.doi.org/10.2495/SAFE130281.
  17. Sari, A, Mathew, T.E. and Montoya, J. (2005), "Assessment of modular metal building for blast loads", Safe Haven Enterprises, Inc. Baker Risk Project No. 01-01272-001-05, San Antonio.
  18. Sesli, H. and Akkose, M. (2016). "Evaluation of sliding stability in concrete gravity dams using multiple wedge analysis", Sigma J. Eng. Nat. Sci., 34(1), 15-29.
  19. Sevim, B. (2018), "Geometrical dimensions effects on the seismic response of concrete gravity dams", Adv. Concrete Constr., 6(3), 269-283. https://doi.org/10.12989/acc.2018.6.3.269.
  20. Sevim, B. and Toy, A.T. (2020), "Blasting response of a two-storey RC building under different charge weight of TNT explosives", Iran. J. Sci. Technol., Tran. Civil Eng., 44, 565-577. https://doi.org/10.1007/s40996-019-00256-0.
  21. Toy, A.T. and Sevim, B. (2017), "Numerically and empirically determination of blasting response of a RC retaining wall under TNT explosive", Adv. Concrete Constr., 5(5), 493-512. https://doi.org/10.12989/acc.2017.5.5.493.
  22. UFC (2008), Unified Facilities Criteria: Structures to Resist the Effects of Accidental Explosions, UFC 3- 340-02, Department of Defense, USA.
  23. Url (2019), https://en.wikipedia.org/wiki/Mohne_Reservoir.
  24. Wang, F., Wan, Y.K.M., Chong, O.Y.K., Lim, C.H. and Lim, E.T.M. (2008), "Reinforced concrete slab subjected to close-in explosion", LS-DYNA Anwenderforum, Bamberg, Verschiedene Anwendungen I, J-I-(21-28).

피인용 문헌

  1. Simple P-I diagram for structural components based on support rotation angle criteria vol.10, pp.6, 2020, https://doi.org/10.12989/acc.2020.10.6.509