Investigation of Seismic Behavior of a Clay Core Rock fill Dam Using Finite Element Method

Yıl 2018, Cilt: 2 Sayı: 1, 7 - 16, 10.07.2018

Ayse Bengu Sunbul Hüseyin Mungan Fatih Sünbül Murat Emre Kartal

Öz

Clay core rock-fill (CCR) dams are chosen dam
construction model due to their low cost and rapid construction advantages. The
stability of dam embankment and analyzing their earthquake resistance is of
great concern to geotechnical engineers. Here, we analyze static and dynamic
degrading behavior of a clay core rock-fill (CCR) dam through using the finite
element method. The static part of the analysis considers the stage
construction, reservoir impoundment and total displacements while, the dynamic
part considers the seismic response of the dam under a real earthquake data
which the data corresponds to typical measures of a peak ground acceleration
(PGA). The static state analyses show a gradual increase in the magnitude of
vertical displacements during the impounding stage where the hydrostatic force
acts on the surface of the dam body and causes additional force on the clay
core section. When the dam is subjected to real earthquake data which had a 0.4
g PGA, we observe larger displacement values compared to the static phase. 

Anahtar Kelimeler

Clay core rock fill (CCR) dam, Earthquake, Finite element method

Kaynakça

• Afiri, R., Hadj, Abderrahmane S., Djerbal, L., Gabi S. 2018. Stability Analysis of Souk-Tleta Earth Dam, North Algeria. In: Shehata H., Rashed, Y. (eds) Numerical Analysis of Nonlinear Coupled Problems, GeoMEast 2017. Sustainable Civil Infrastructures. Springer, Cham.
• Bayraktar, A. et al. 2012.Comparison of Near-Fault And Far-Fault Ground Motion Effects On Geometrically Nonlinear Earthquake Behavior of Suspension Bridges, Natural Hazards, 64(1), pp 593–614.
• Fenves, G. and Chopra, A. K. 1985. Effects Of Reservoir Bottom Absorption and Dam-Water-Foundation Rock Interaction On Frequency Response Functions For Concrete Gravity Dams, Earthquake Engng. Struct. Dyn., 13: 13–31. doi:10.1002/eqe.4290130104.
• Duncan, J.M., Seed, R.B., Wong, K.S. and Ozawa, U. 1984. FEADAM: A Computer Program For Finite-Element Analysis Of Dams, Dep. of Civil Eng., Stanford Univ., Geotech. Eng. Res. Report No. Su/GT/84-03, Nov.
• Duncan, J.M., and Chang, C.M. 1970. Nonlinear Analysis Of Stress And Strain In Soils, Journal of Soil Mechanics and Foundations Division, ASCE, 96(SM5), 1629-1653.
• Ghaedi, K., Hejazi, F., Ibrahim, Z. et al. KSCE J Civ Eng 2017. Flexible Foundation Effect on Seismic Analysis of Roller Compacted Concrete (RCC) Dams Using Finite Element Method, KSCE Journal of Civil Engineering, https://doi.org/10.1007/s12205-017-1088-6.
• Jarpe, S. P., L. J. Hutchings, T. F. Hauk, A. F. Shakal. 1989. Selected Strong and Weak-Motion Data From the Loma Prieta Earthquake Sequence, Seismological Research Letters ; 60 (4): 167–176. doi: https://doi.org/10.1785/gssrl.60.4.167.
• Kartal, M. E., Cavusli, M. and Sunbul, A. B. 2017. Assessing Seismic Response Of a 2D Roller-Compacted Concrete Dam Under Variable Reservoir Lengths, Arab J Geosci, 10, 488
• Liu L, et.al. 2016. Numerical Stress-Deformation Analysis Of Cut-Off Wall In Clay-Core Rockfill Dam On Thick Overburden, Water Science and Engineering 9, Issue 3, Pages 219-226.
• Parish Y. 2007. Numerical Analysis Of The Seismic Behaviour Of Earth Dams: Influence Of Plasticity And Pore Water Pressure, PhD Thesis, University of Science and Technology of Lille, France.
• Pacific Earthquake Engineering Research Center (PEER), 2018. NGA Database, Available at https://ngawest2.berkeley.edu/ (last accessed 01 January 2018).
• Rashidi M., Haeri, S.M. 2017. Evaluation Of Behaviors Of Earth And Rockfill Dams During Construction And Initial Impounding Using Instrumentation Data And Numerical Modelling, Journal of Rock Mechanics and Geotechnical Engineering 9.33.
• Siyahi, B, Arslan, H. 2008. Non-Linear Dynamic Finite Element Simulation Of Alibey Earth Dam, Environmental Geology,Berlin, 54(1): 77–85.
• Schanz, T., Vermeer, P.A. and Bonnier, P.G. 1999. Formulation And Verification Of The Hardening—Soil Model, Proceedings Plaxis Symposium, Beyond 2000 in Computational Geotechnics, Amsterdam, 18–20 March, 281–296.
• Sunbul, A.B., Cavusli, M., Kartal, M.E. and Sunbul, F. 2017. A Case Study On 3d Non-Linear Analysis Of A Clay Core Rockfill Dam, EPSTEM Journal, 1, 388-396.
• USCOLD (US Committee on Large Dams). 1992. Observed Performance Of Dams During Earthquakes. Committee on Earthquakes, Denver, CO.
• Westergaard, H.M. 1933. Water Pressures On Dams During Earthquakes. Am Soc Civ Eng Trans, 98(2); 418-433.