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State of the contact of concrete with rock under the upstream faces of dams

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Hydrotechnical Construction Aims and scope

Conclusions

  1. 1.

    The state of the “rock—concrete” contact under the upstream faces of dams can serve as a criterion of their safety. Its disruption with opening of a fracture should be considered a defect of the structure, the initial stage of the second limit state.

  2. 2.

    When designing concrete dams on high-modulus rock foundations (more than 7000 MPa) it is necessary to perform a check calculation of shear stability in the presence of an open contact with consideration of an increase of uplift and to provide special design measures and appropriate methods of performing works. In our opinion, it is advisable to revise the allowances of SNiP 2.06.06-85 with respect to the depth of the tensile zone in the contact section.

  3. 3.

    The investigated problem requires a further thorough study and is the key problem in the theory of the limit state of concrete dams working in accordance with the scheme of the two-dimensional problem. The mechanism of disturbance of the contact in the foundation of arch dams is liable also to a special investigation.

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Literature cited

  1. S. Ya. Éidel'man, On-Site Investigations of the Bratsk Dam [in Russian], Énergiya, Leningrad (1975).

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Authors
  1. A. N. Marchuk
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  2. M. A. Marchuk
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Additional information

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 6, pp. 26–31, June, 1989.

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Marchuk, A.N., Marchuk, M.A. State of the contact of concrete with rock under the upstream faces of dams. Hydrotechnical Construction 23, 334–340 (1989). https://doi.org/10.1007/BF01424069

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  • DOI: https://doi.org/10.1007/BF01424069

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