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Seismic evaluation of Southern California embankment dam systems using finite element modeling

  • Kamalzare, Mehrad (Department of Civil Engineering, California State Polytechnic University) ;
  • Marquez, Hector (Department of Civil Engineering, California State Polytechnic University) ;
  • Zapata, Odalys (Department of Civil Engineering, California State Polytechnic University)
  • 투고 : 2022.09.06
  • 심사 : 2022.10.31
  • 발행 : 2022.11.10

초록

Ensuring the integrity of a country's infrastructure is necessary to protect surrounding communities in case of disaster. Embankment dam systems across the US are an essential component of infrastructure, referred to as lifeline structures. Embankment dams are crucial to the survival of life and if these structures were to fail, it is imperative that states be prepared. Southern California is particularly concerned with the stability of embankment dams due to the frequent seismic activity that occurs in the state. The purpose of this study was to create a numerical model of an existing embankment dam simulated under seismic loads using previously recorded data. The embankment dam that was studied in Los Angeles, California was outfitted with accelerometers provided by the California Strong Motion Instrumentation Program that have recorded strong motion data for decades and was processed by the Center for Engineering Strong Motion Data to be used in future engineering applications. The accelerometer data was then used to verify the numerical model that was created using finite element modeling software RS2. The results from this study showed Puddingstone Dam's simulated response was consistent with that experienced during previous earthquakes and therefore validated the predicted behavior from the numerical model. The study also identified areas of weakness and instability on the dam that posed the greatest risk for its failure. Following this study, the numerical model can now be used to predict the dam's response to future earthquakes, develop plans for its remediation, and for emergency response in case of disaster.

키워드

과제정보

The authors would like to thank the California State Polytechnic University, Pomona, SURE Program, and the Cypress College for their support throughout this project.

참고문헌

  1. Almawla, S., Fadi, H. and Kaddah, F. (2018), "Response of a lebanese rock-filled dam to seismic excitation", WIT T. Eng. Sci., 121, 33-45. https://doi.org/10.2495/RISK180031.
  2. Alonso-Estebanez, A., Del Coz Diaz, J.J., Rabanal, F., Pascual-Munoz, P. and Nieto, P. (2018), "Numerical investigation of truck aerodynamics on several classes of infrastructures", Wind Struct., 26(1), 35-43. https://doi.org/10.12989/was.2018.26.1.035.
  3. Babanouri, N. and Sarfarazi, V., (2018), "Numerical analysis of a complex slope instability: Pseudo-wedge failure", Geomech. Eng., 15(1), 669-676. https://doi.org/10.12989/gae.2018.15.1.669
  4. Bai, T., Yang, H., Chen, X., Zhang, S. and Jin, Y., (2020). "In-situ monitoring and reliability analysis of an embankment slope with soil variability". Geomech. Eng., 23(3), 261-273. https://doi.org/10.12989/gae.2020.23.3.261
  5. Bray, J.D., Seed, R.B. and Boulanger, R.W. (1990), "Investigation of the response of Puddingstone and Cogswell Dams in the Whittier Narrows Earthquake of October 1, 1987. Volume I: Puddingstone Dam", Geotechnical Engineering Report No. UCB/GT/90-01, University of California, Berkeley, June.
  6. Also released as Data Utilization Report CSMIP/93-02, California Department of Conservation, Division of Mines and Geology, Office of Strong Motion Studies, Dec. 1993.
  7. California Department of Conservation (2015), "Fault Activity of California", State of California.
  8. Castelli, F., Lentini, V. and Trifaro, C.A. (2016), "1D seismic analysis of earth dams: the example of the Lentini site", Procedia Eng., 158, 356-361. https://doi.org/10.1016/j.proeng.20 16.08.455.
  9. Deng, D., Lu, K. and Li, L., (2019), "LE analysis on unsaturated slope stability with introduction of nonlinearity of soil strength", Geomech. Eng., 19(2), 179-191. https://doi.org/10.12989/gae.2019.19.2.179.
  10. Elia, G. and Rouainia, M. (2013), "Seismic performance of earth embankment using simple and advanced numerical approaches", J. Geotech. Geoenviron. Eng., 139(7). https://doi.org/10.1061/(ASCE)GT.1943-5606.0000840.
  11. Farshidfar, N., Keshavarz, A. and Mirhosseini, S.M. (2021), "Seismic stability of reinforced soil slopes using the modified pseudo-dynamic method", Earthq. Struct., 20(5), 473-486. https://doi.org/10.12989/eas.2021.20.5.473.
  12. FEMA, and Levees.Org. (2020), "Counties with Levees", Levees.Org, Retrieved 5 Aug. 2020, levees.org/counties-with-levees/.
  13. France, J., Alvi, I.A., Dickson, P.A., Falvey, H.T., Rigbey, S. and Trojankowski, J. (2018), "Independent forensic team report Oroville Dam spillway incident", Oroville, CA, California Department of Water Resources.
  14. Fu, Q. and Wu, Y. (2019), "Three-dimensional finite element modelling and dynamic response analysis of track-embankment-ground system subjected to high-speed train moving loads", Geomech. Eng., 19(3), 241-254. https://doi.org/10.12989/gae.201 9.19.3.241.
  15. Kamalzare, M., Zimmie, T.F., Cutler, B. and Franklin, W.R. (2016), "New visualization method to evaluate erosion auantity and pattern", Geotech. Test. J., 39(3), 431-446. https://doi.org/10.1520/GTJ20140226.
  16. Marquez, H. and Kamalzare, M. (2019), "Geotechnical risk analyses and evaluation of design criteria of embankment dam systems", Proceedings of the 7th International Symposium on Deformation Characteristics of Geomaterials, Strathclyde's Technology & Innovation Centre, Glasgow, UK.
  17. Nasiri, F., Javdanian, H. and Heidari, A. (2020), "Seismic response analysis of embankment dams under decomposed earthquakes", Geomech. Eng., 21(1), 35-51. httpd://doi.org/10.12989/gae.2020.21.1.035.
  18. Park, D.S. (2018), "Analyses of centrifuge modelling for artificially sensitive clay slopes", Geomech. Eng., 16(5), 513-525. https://doi.org/10.12989/gae .2018.16.5.513.
  19. Puentes, J., Rodriguez, L. and Rodriguez, E. (2006), "Numerical models for seismic response of El Buey dam", GeoCongress.
  20. Rampello, S., Cascone, E. and Grosso, N. (2009), "Evaluation of the seismic response of a homogeneous earth dam", Soil Dyn. Earthq. Eng., 29, 782-798. https://doi.org/10.1016/j.soildyn.2008.08.006.
  21. Rocscience. RS2 Tutorials. Retrieved from https://www.rocscience.com/help/rs2/tutorials/Phase2_Tut orial s.htm Sica, St., Pagano, L. and Rotili, F. (2019), "Rapid drawdown on earth dam stability after a strong earthquake", Comput. Geotech., 116. https://doi.org/10.1016/J.COMPGEO.2019.103187.
  22. Townsend, F.F. (2006), The Federal Response to Hurricane Katrina: Lessons Learned, Retrieved from http://library.stmarytx.edu/acadlib/edocs/katrinawh.pdf
  23. Wu, C., Ni, C. and Ko, H. (2009), "Seismic response of an earth dam: finite element coupling analysis and validation from centrifuge tests", J. Rock Mech. Geotech. Eng., 1(1), 56-70. DOI: https://doi.org/10.3724/SP.J.1235.2009.00056
  24. Xing, H., Liu, L. and Luo, Y. (2019), "Water-induced changes in mechanical parameters of soil-rock mixture and their effect on talus slope stability", Geomech. Eng., 18(4), 353-362. https://doi.org/10.12989/gae.2019.18.4.353.
  25. Yamaguchi, K., Takeuchi, N. and Hamasaki, E. (2018), "Three-dimensional simplified slope stability analysis by hybrid-type penalty method", Geomech. Eng., 15(4), 947-955. https://doi.org/10.12989/gae.2018.15.4.947.
  26. Zeroual, A., Fourar, A. and Djeddou, M. (2019), "Predictive modeling of static and seismic stability of small homogeneous earth dams using artificial neural network", Arabian J. Geosci., 12(2), 1-16. https://doi.org/10.1007/s12517-018-4162-6.