Volume 13, Issue 1 And A (Transaction A: Civil Engineering March 2015)
IJCE 2015, 13(1 And A): 16-29 |
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Kalani Sarokolayi L, Navayi Neya B, Vaseghi Amiri J. Nonlinear dynamic analysis of concrete gravity dams considering rotational component of ground motion. IJCE 2015; 13 (1) :16-29
URL: http://ijce.iust.ac.ir/article-1-945-en.html
URL: http://ijce.iust.ac.ir/article-1-945-en.html
Abstract: (6777 Views)
This study focuses on non-linear seismic response of a concrete gravity dam subjected to translational and rotational correlated components of ground motions including dam-reservoir interaction. For this purpose rotational components of ground motion is generated using Hong Non Lee improved method based on corresponding available translational components. The 2D seismic behavior of the dam concrete is taken into account using nonlinear fracture mechanics based on the smeared- crack concepts and the dam-reservoir system are modeled using Lagrangian-Lagrangian approach in finite element method. Based on presented formulation, Pine Flat concrete gravity dam is analyzed for different cases and results show that the rotational component of ground motion can increase or decrease the maximum horizontal and vertical displacements of dam crest. These results are dependent on the frequency of dam-reservoir system and predominant frequencies of translational and rotational components of ground motion.
Keywords: Rotational component of ground motion, Nonlinear analysis, Concrete gravity dam, Smeared crack, Dam-Reservoir interaction, Lagrangian-Lagrangian method
Type of Study: Research Paper |
Subject:
Structure-Earthquake
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