The use of 3D modeling for the prediction of the seismic demands on the gravity dams

Date

2017-09-01

Author

Bybordiani, M.
Arıcı, Yalın

Metadata

Show full item record

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

Item Usage Stats

182
views

0
downloads

Seismic behavior of gravity dams has long been evaluated using a representative two-dimensional (2D) system. Formulated for the gravity dams built in wide canyons, the assumption is nevertheless utilized extensively for almost all concrete dams due to the established procedures as well as the expected computational costs of a three-dimensional model. However, a significant number of roller-compacted concrete dams, characterized as such systems, do not conform to the basic assumptions of these methods by violating the conditions on canyon dimensions and joint-spacing/details. Based on the premise that the 2D modeling assumption is overstretched for practical purposes in a variety of settings, the purpose of this study is to critically evaluate the use of 2D modeling for the prediction of the seismic demands on these systems. Using a rigorous soil-structure interaction approach, the difference between the two and three-dimensional response for gravity dams was investigated first in the frequency domain for a range of canyon widths and foundation to dam moduli ratios. Then, the time domain differences between the crest displacements and the maximum principal stress were obtained using 70 different ground motions in order to show the possible bias introduced into the analysis results due to the modeling approach. The results of the study show that even for relatively wide canyons, the 2D analysis can lead to misleading predictions. Copyright (c) 2017 John Wiley & Sons, Ltd.

Subject Keywords

Gravity dam, Seismic design, Soil-structure interaction, 2D versus 3D analyses, Frequency domain, Principal stress

URI

https://hdl.handle.net/11511/32905

Journal

EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS

DOI

https://doi.org/10.1002/eqe.2880

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

The Use of 3D Modeling for the Prediction of the Seismic Demands on the Gravity Dams Bybordıanı, Mılad; Arıcı, Yalın (null; 2017-02-01) Seismic behavior of gravity dams has long been evaluated using a representative 2D monolith for the system. Formulated for the gravity dams built in wide-canyons, the assumption is nevertheless utilized extensively for almost all concrete dams due to the established procedures as well as the expected computational costs of a three dimensional model. However, a significant number of RCC dams, characterized as such systems, do not conform to the basic assumptions of these methods by violating the conditions o...
THE USE OF CONTINUOUS CENTRIFUGAL GRAVITY CONCENTRATION IN GRINDING CIRCUIT. MODIFIED APPROACH FOR IMPROVED METALLURGICAL PERFORMANCE AND REDUCED GRINDING REQUIREMENTS Altun, Naci Emre; Klein, Bern (2015-01-01) The use of centrifugal gravity concentration in the closed-grinding circuit of a gold-containing massive sulphide ore was tested on classifier underflow and overflow. A continuous Knelson CVD6 was retrofitted to the hydrocyclone underflow for recovery of Au and Pb at a coarser feed size. The objective of treatment of overflow was recovering unliberated Au prior to flotation. The tests were performed in actual operating conditions at Nyrstar's Myra Falls Mine. The results of the tests on the cyclone underflo...
Quantitative comparison of 2D and 3D modeling for concrete gravity dams Evliya, Ekin Erdem; Arıcı, Yalın; Department of Civil Engineering (2014) Seismic behavior of gravity dams has long been evaluated and predicted using a representative 2D monolith for the dam. Formulated for the gravity dams built in wide-canyons, the assumption is nevertheless utilized extensively for almost all concrete dams due to the established procedures in 2D space as well as the expected computational costs of building a three dimensional model. A significant number of roller compacted concrete dams are being designed based on these procedures regardless of the valley dim...
Comparison of the Overlapping Lattice and the Finite Element Approaches for the Prediction of the Collapse State of Concrete Gravity Dams Soysal Albostan, Berat Feyza; Arıcı, Yalın; Binici, Barış; Tuncay, Kağan (2017-10-13) Estimating the collapse limit state of concrete gravity dams within the framework of performance based design is challenging due to the uncertainty in modelling the response of these systems and the strong dependence of the behavior on the ground motion. In this context, the purpose of the study is to investigate the prediction capability of numerical tools in determining the collapse state of concrete gravity dams. The first tool used to this end is the classical finite element method with the smeared crac...
A Novel Two-Way Finite-Element Parabolic Equation Groundwave Propagation Tool: Tests With Canonical Structures and Calibration Apaydin, Gokhan; Ozgun, Ozlem; Kuzuoğlu, Mustafa; Sevgi, Levent (Institute of Electrical and Electronics Engineers (IEEE), 2011-08-01) A novel two-way finite-element parabolic equation (PE) (2W-FEMPE) propagation model which handles both forward and backward scattering effects of the groundwave propagation above the Earth's surface over irregular terrain paths through inhomogeneous atmosphere is introduced. A Matlab-based propagation tool for 2W-FEMPE is developed and tested against mathematical exact and asymptotic solutions as well as the recently introduced two-way split-step PE model through a canonical validation, verification, and ca...

Citation Formats

M. Bybordiani and Y. Arıcı, “The use of 3D modeling for the prediction of the seismic demands on the gravity dams,” EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, pp. 1769–1789, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32905.