Structural Monitoring and Maintenance

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

The reason of cracking in bottom gallery of SefidRud Buttress Dam and earthquake and post earthquake performance

  • Received : 2019.01.19
  • Accepted : 2019.04.17
  • Published : 2019.06.25
⟨ Previous Next ⟩

Abstract

Present study concerns the safety evaluation of SefidRud dam's block No. 18 regarding probable crack propagation in the foundation gallery under a MCE record. Accordingly, a 3D finite element model of the block in companion with the reservoir and the foundation is modeled. All the associated thermal and structural parameters are derived via calibration with the records of thermometers and pendulums installed inside the dam body. The origination of the cracks and their whereabouts are determined by primary thermal and static analyses and through a linear dynamic analysis the potential failure zone and their extent and level are studied. The foundation gallery is the most probable zone among the other intensive tensile stress area to compromise the dam stability. Therefore, the nonlinear analysis of this risky region is inevitable. The results depict the permissible expansion of the cracks inside the gallery even under another future earthquake in MCE level. As a consequence, the general dam performance is assessed safe in spite of the seepage flow rate growth from the gallery fractures.

Keywords

References

  1. Ahmadi, M. and Khoshrang, G. (1992), "SefidRud dam's dynamic response to the large near-field earthquake of June 1990", Dam Eng., 3, 85-115.
  2. Ahmadi, M., Khoshrang, G., Mokhtarzadeh, A., and Jalalzadeh, A. (1992), "Behaviour of a large concrete dam due to an actual maximum credible earthquake", Proceedings of the Earthquake Engineering, Tenth World Conference, Balkema, Rotterdam, ANSYS, Inc. Theory Reference Manual.
  3. Arcangeli, E. and Ciabarri, P. (1994), "Menjil dam rehabilitation by resin grouting and high capacity anchors", Int. Water power Dam Constr., 46,19-25.
  4. Bofang, Z. (1997), "Prediction of water temperature in deep reservoir", Dam Eng., 8, 13-25.
  5. FERC (1999), Engineering Guidelines for the Evaluation of Hydropower Projects, Federal Energy Regulatory Commission, Division of Dam Safety and Inspections, Washington, DC 20426.
  6. Ghaemian, M. (1996), "Seismic response of a retrofitted concrete buttress dam", Proc., 11th WCEE, Acapulco, Mexico,
  7. Ghaemian, M. and Ghobarah, A. (1997), "Seismic response of the Sefidrud concrete buttress dam", Eur. Earthq. Eng., 11, 7-16.
  8. Ghaemian, M., and Ghobarah, A. (1998), "Staggered solution schemes for dam-reservoir interaction", J. Fluids Struct., 12, 933-948. https://doi.org/10.1006/jfls.1998.0170
  9. Ghaemian, M. and Ghobarah, A. (1999), "Nonlinear seismic response of concrete gravity dams with dam- reservoir interaction", Eng. Struct., 21, 306-315. https://doi.org/10.1016/S0141-0296(97)00208-3
  10. Ghaemmaghami, A. and Ghaemian, M. (2008), "Experimental seismic investigation of Sefid-rud concrete buttress dam model on shaking table", Earthq.Eng. Struct. D., 37, 809-823. https://doi.org/10.1002/eqe.791
  11. Ghaemmaghami, A. and Ghaemian, M. (2010), "Shaking table test on small-scale retrofitted model of Sefidrud concrete buttress dam", Earthq.Eng. Struct. D., 39, 109-118.
  12. Ilinca, C., Varvorea, R. and Popovici, A. (2014), "Influence of dynamic analysis methods on seismic response of a buttress dam", Math. Model. Civil Eng., 10, 12-26. https://doi.org/10.2478/mmce-2014-0012
  13. Shen, C.K., et al. (1974), "Earthquakes induced by reservoir impounding and their effect on the Hsinfengkiang Dam", Scientia Sinica, 17, 239-272.
  14. USACE EM 1110-2-6051 (2003), Time-History Dynamic Analysis of Concrete Hydraulic Structures.
  15. Chapter 4: Structural Performance and Damage Criteria, U.S. Army Corps of Engineers; Washington, DC, USA.
  16. USACE EM 1110-2-6053 (2007), Earthquake Design and Evaluation of Concrete Hydraulic Structures, U.S. Army Corps of Engineers; Washington, DC, USA.
  17. USCOLD. (1992), Observed Performance of Dams During Earthquakes, USCOLD Committee on Earthquakes.
  18. Yekom Consulting Engineers (2007), "Rehabilitation project of Sefid Roud, Static analysis of butrress number 18", Yekom Consulting Engineers,.

Cited by

  1. A Positioning Method of Temperature Sensors for Monitoring Dam Global Thermal Field vol.7, 2020, https://doi.org/10.3389/fmats.2020.587738
  2. Nonlinear analysis of stability of rock wedges in the abutments of an arch dam due to seismic loading vol.7, pp.4, 2019, https://doi.org/10.12989/smm.2020.7.4.295