Akademik Veri Yönetim Sistemi
4. International Turkic World Congress on Science and Engineering , Niğde, Türkiye, 23 - 24 Haziran 2022, cilt.1, ss.416-424
In concrete faced rockfill dam construction (CFRD), after the completion
of rockfill embankment, the construction process is given a halt until the major
part of the settlement of rockfill embankment is completed and the construction
of concrete lining is continued thereafter. Unexpected deformation of the
rockfill affects the concrete face and problems in the concrete face cause
leakage problems which may end up in both structural and performance related
issues to dams. Therefore, estimations made in design period and observation of
end of rockfill embankment construction settlements are important to be able to
start the construction of the concrete face of a CFRD. In this study, the
settlement behavior of Konya Afşar Hadimi Dam in Turkey was investigated for
the “end of rockfill embankment construction” loading condition.
Two-dimensional plane strain finite element analyses were carried out to assess
the total settlements. Hardening soil model was used to represent the
nonlinear, inelastic, and stress-dependent behavior of rockfill material.
Initially, the parameters to represent the rockfill characteristics on the dam
were estimated considering the previous research in the field; and then back analyses
were performed iteratively to determine the parameters which represent the
settlement behavior of the dam. Settlements calculated by utilizing these
parameters were then compared with the observed values for end of rockfill
embankment construction. It was seen that predicted settlements were larger
than the observed values and the overall agreement was quite encouraging.