Structural Monitoring and Maintenance

  • 제6권2호
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  • Pages.103-124
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  • 2019
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  • 2288-6605(pISSN)
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  • 2288-6613(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

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

  • 투고 : 2019.01.19
  • 심사 : 2019.04.17
  • 발행 : 2019.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

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.

키워드

참고문헌

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피인용 문헌

  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