Discrete crack analysis of concrete gravity dams based on the known inertia force field of linear response analysis

Shi, Zihai; Nakano, Mikio; Nakamura, Yukari; Liu, Cuiping

doi:10.1016/j.engfracmech.2013.10.020

Cited by 8 publications

(3 citation statements)

References 14 publications

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“…This technology provides some advantages for dam engineers in terms of equipment, manpower, construction speed and cost. Analysis of gravity dams subjected to earthquake excitations considering different aspects of analysis including interactions, boundary conditions, reservoir length and height have been addressed by many researchers [10][11][12][13][14][15]. The difference between constitutive relationship of RCC and conventional concrete invites the investigators to study different aspects of analysis of the RCC dams such as dam-foundation, dam-reservoir and dam-reservoir-foundation interaction.…”

Section: Introductionmentioning

confidence: 99%

Seismic Response Characteristics of RCC Dams Considering Fluid-Structure Interaction of Dam-Reservoir System

Ghaedi¹,

Hejazi²,

Gordan³

et al. 2021

Computational Overview of Fluid Structure Interaction

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In analysis of different types of dams, i.e. arch, gravity, rockfill and Roller Compacted Concrete (RCC) dams, the effect of hydrodynamic water pressure as an effective factor must seriously be taken into consideration. In present study, the hydrodynamic effect is precisely deliberated in RCC dams and compared to hydrostatic pressure effect. For this purpose, Kinta RCC dam in Malaysia is selected and 2D finite element (FE) model of the dam is performed. The Lagrangian approach is used to solve the dam-reservoir interaction, fluid–structure interaction (FSI), and in order to evaluate the crack pattern, Concrete Damaged Plasticity (CDP) model is implemented. Comparisons show that hydrodynamic pressure significantly changes the dam behaviour under seismic excitations. Moreover, the hydrodynamic effect modifies the deformation shape of the dam during the ground motions, however, it increases the magnitudes of the developed stresses causing more extensive tension crack damages mostly in the heel and upstream zones of the dam.

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Section: Introductionmentioning

confidence: 99%

Seismic Response Characteristics of RCC Dams Considering Fluid-Structure Interaction of Dam-Reservoir System

Ghaedi¹,

Hejazi²,

Gordan³

et al. 2021

Computational Overview of Fluid Structure Interaction

View full text Add to dashboard Cite

show abstract

“…The nonlinear behavior of concrete is mainly caused by the initiation and propagation of cracks. In the finite element simulation, the description of concrete cracks generally has two ways: one is the discrete crack method [21][22][23][24] and the second is the smeared crack method [25][26][27][28][29]. The discrete crack model assumes that cracks appear on the element boundaries.…”

Section: Overview Of the Smeared Crack Modelmentioning

confidence: 99%

Modeling and Simulation of the Hysteretic Behavior of Concrete under Cyclic Tension–Compression Using the Smeared Crack Approach

Zhang

Wang

2023

Materials

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Concrete structures under wind and earthquake loads will experience tensile and compressive stress reversals. It is very important to accurately reproduce the hysteretic behavior and energy dissipation of concrete materials under cyclic tension–compression for the safety evaluation of concrete structures. A hysteretic model for concrete under cyclic tension–compression is proposed in the framework of smeared crack theory. Based on the crack surface opening–closing mechanism, the relationship between crack surface stress and cracking strain is constructed in a local coordinate system. Linear loading–unloading paths are used and the partial unloading–reloading condition is considered. The hysteretic curves in the model are controlled by two parameters: the initial closing stress and the complete closing stress, which can be determined by the test results. Comparison with several experimental results shows that the model is capable of simulating the cracking process and hysteretic behavior of concrete. In addition, the model is proven to be able to reproduce the damage evolution, energy dissipation, and stiffness recovery caused by crack closure during the cyclic tension–compression. The proposed model can be applied to the nonlinear analysis of real concrete structures under complex cyclic loads.

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“…Controlling cracks in concrete structures has been a research emphasis in structural engineering and materials science for many years. Studies on generating and characterizing cracks are mostly based on 2D information and statistics [1][2][3], whereas extraction processes of 2D information exhibit destructive and non-situ characteristics.…”

Section: Introductionmentioning

confidence: 99%

Propagating and Reconstructing Cracks in 3D in Cement-Based Materials

Liu

Qin³

et al. 2014

AMM

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Three-dimensional reconstruction and quantitative calculation were performed by X-ray computerized tomography to propagate cracks in paste, mortar, and concrete specimens. Cracking could be observed, and the number and width of cracks increased with increasing strain and load. In mortar and concrete specimens, the number and width of cracks remained unchanged with increasing strain and load; however, a sudden increase in the number and width of cracks nearly destroyed the specimens. Cracks developed along the interface of the aggregate and the mortar in the mortar specimen. In the concrete specimen, cracks continued to grow through the coarse aggregate when cracking occurred along the stress direction. However, cracks developed along the interface of the aggregate and the coarse aggregate when cracking was independent of the stress direction.

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Discrete crack analysis of concrete gravity dams based on the known inertia force field of linear response analysis

Cited by 8 publications

References 14 publications

Seismic Response Characteristics of RCC Dams Considering Fluid-Structure Interaction of Dam-Reservoir System

Seismic Response Characteristics of RCC Dams Considering Fluid-Structure Interaction of Dam-Reservoir System

Modeling and Simulation of the Hysteretic Behavior of Concrete under Cyclic Tension–Compression Using the Smeared Crack Approach

Propagating and Reconstructing Cracks in 3D in Cement-Based Materials

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