Abstract
To get the actual ultimate bearing capacity of concrete dam, the effect of geometric nonlinearity and strain softening on it, which appears in the failure process of concrete dam, is studied. Overload method is adopted to obtain the bearing capacity of a concrete dam by taking into consideration strain softening in the material constitutive law, geometric nonlinearity in geometric equation and equilibrium differential equation. Arc-length method is used to find the extreme point and descending branch of the load-displacement curve of the dam. The results present that the effect cannot be ignored. And geometric nonlinearity of structure and strain softening of materials should be considered for numerical analysis of ultimate bearing capacity of a concrete dam.
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Ren, Q., Jiang, Y. Ultimate bearing capacity of concrete dam involved in geometric and material nonlinearity. Sci. China Technol. Sci. 54, 509–515 (2011). https://doi.org/10.1007/s11431-010-4281-0
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DOI: https://doi.org/10.1007/s11431-010-4281-0