Settlement behaviour of a concrete faced rock-fill dam |
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| Authors: | S Özkuzukiran M Y Özkan M Özyazicio?lu G S Yildiz |
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| Institution: | (1) Limit Soils Investigation Co., Ankara, Turkey;(2) Middle East Technical University, 06531 Ankara, Turkey;(3) State Hydraulic Works, Dams and HEPP Department, Ankara, Turkey |
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| Abstract: | Settlement behaviour of a concrete faced rock-fill dam (CFRD), Kurtun dam, located in the East Black Sea Region, Turkey, is
investigated. This is the first instrumented CRDF in the Country. Two dimensional plane strain finite element analyses were
carried out to assess the total stresses and displacements in the dam both for construction and reservoir filling stages by
using computer program PLAXIS. Predicted stresses and settlements are compared with those observed and overall the results
are found to be in good agreement for the construction stage. Due to the relatively steep abutment slopes, cross-valley arching
has a significant effect on stresses and displacements in the dam body. For the reservoir filling condition, it is seen that,
predicted settlements are larger than the observed values, which indicates that during reservoir filling the rock-fill embankment
responds more stiffly than it does during the construction stage. The hardening soil model is used to represent the non-linear,
inelastic and stress dependent behaviour of rock-fill material. The model parameters are selected from the appropriate values
in the literature investigating comparable cases. |
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| Keywords: | concrete faced rock-fill dams displacement finite element analysis hardening model stress |
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