Predicted and Observed Deformation Behaviour of Derince Dam

Date

2023-12-11

Author

Er, Yasemin

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

89
views

121
downloads

Cite This

Concrete face rockfill dams (CFRDs) have gained global popularity due to their stability and efficient construction, particularly in regions lacking impermeable materials and in humid environments. In CFRDs, alluvial materials can be used as the main fill instead of traditional rock materials, leading to the evolution of concrete face sand-gravel dams (CFSGDs). These CFSGDs are modified versions of CFRDs, incorporating design variations to accommodate different fill materials. This study examines the behavior of the Muğla Milas Derince Dam, constructed on approximately 15-meter-deep alluvial deposits, during its construction and impoundment stages. Two-dimensional plane strain finite element analyses using Plaxis v20 are conducted to investigate the dam behavior. The hardening soil model is utilized to represent the inelastic, non-linear, and stress-dependent behavior of the sand-gravel fill material and alluvium strata. The Hoek-Brown failure criterion is adapted for the bedrock to estimate foundation parameters. Preliminary analyses include evaluating previous studies of similar dams to select embankment parameters. After calibration of material parameters with settlement data from settlement cells in the dam body, the dam’s behavior during the impoundment stage is predicted. The observed values align well with the settlements for both stages.

Subject Keywords

Settlement, Stress, Concrete face sand-gravel dams, Finite element method, Dams constructed on alluvial deposits

URI

https://hdl.handle.net/11511/108191

Collections

Graduate School of Natural and Applied Sciences, Thesis