Three-Dimensional Static and Dynamic Finite Element Analysis of Concrete Face Rockfill Dam of Boliehe Reservoir
[Purposes]This paper studies the stress deformation law of rockfill dam under earthquake ac-tion to provide guidance for the seismic design of concrete face rockfill dam.[Methods]Three-dimensional static-dynamic finite element analysis was conducted,considering the structural and mate-rial characteristics of the Baolie River Reservoir concrete face rockfill dam.The Duncan-Zhang E-B model was utilized to describe the static properties of the rockfill,while an equivalent nonlinear visco-elastic model was employed to characterize its dynamic behavior.[Findings]Static calculations indicate that the maximum vertical displacement of the dam body during the reservoirfilling period accounts for 0.45%of the maximum dam height,and the maximum stress in the dam body falls within a reasonable range.Dynamic calculations reveal that the dam body experiences stronger acceleration responses in the downstream,transverse,and vertical directions,with a permanent settlement of approximately 0.33%of the dam height,ensuring overall stability of the dam body.[Conclusions]Analysis results demonstrate that the design of the concrete face rockfill dam in the Baolie River Reservoir meets regulatory require-ments and is technically sound.
concrete face rockfill damstatic and dynamic analysisstress deformation
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