Computation of Thermal-Stresses and Contraction Joint Distance of RCC Dams

Kuzmanović, Vladan; Savić, Ljubodrag; Mladenovic, Nikola

doi:10.1080/01495739.2013.764795

Cited by 25 publications

(19 citation statements)

References 4 publications

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“…The normal stresses in the dam-axes direction, σ z , are considered. The stresses are primarily influenced by the temperature field, and to a less degree by the dead load, while the effect of other loads may be neglected, [8]. The tensile stresses are accepted to be positive, and the compressive stresses are negative.…”

Section: Results Of Thermal-stress Computationmentioning

confidence: 99%

“…From one phase to another, new parts of the model may show up (and some become inactive), therefore the active elements have to be defined at the beginning of the each phase. Within the each phase, the computation is performed in a given number of time steps, defined according to the observed concrete placement schedule, [6][7][8].…”

Section: Theoretical Backgroundmentioning

confidence: 99%

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Thermal-stress behaviour of RCC gravity dams

Kuzmanović¹,

Savić²,

Mladenovic³

2015

FME Transaction

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Concrete (RCC) is a special concrete mixture with low cement content, frequently used for concrete gravity dams. This paper deals with the 3D finite element model for unsteady phased thermal-stress analysis of RCC dams. Model calibration and verification has been done, based on the in-situ measurements of the Platanovryssi dam. The study has been done using the actual dam shape, RCC time schedule, and material properties. The results prove that the recommended 3D model enables a reliable thermal-stress prediction and transversal joint distance computation for an RCC gravity dam.

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Section: Results Of Thermal-stress Computationmentioning

confidence: 99%

Section: Theoretical Backgroundmentioning

confidence: 99%

Thermal-stress behaviour of RCC gravity dams

Kuzmanović¹,

Savić²,

Mladenovic³

2015

FME Transaction

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“…Бетонные гравитационные плотины -один из самых распространенных типов водонапорных сооружений, нашедших широкое применение как в России, так и в мире. При их возведении основным являются температурные воздействия на сооружение [1][2][3]. В результате тепловыделения при гидратации цемента и влияния множества факторов возможно возникновение значительных температурных градиентов и появление трещин 1 [4][5][6].…”

Section: Introductionunclassified

The problem of temperature cracking in concrete gravity dams

Алексеевич

Нгуен

2020

Vestnik MGSU

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Introduction. The concreting of solid structures, such as concrete dams, bridge constructions, foundations of buildings and structures, is accompanied by exothermic heating, caused by cement hydration. Heat, emitted by mass concrete blocks, slowly leaves constructions. A substantial temperature difference frequently arises between the solid concrete centre and its surface. If this temperature difference reaches a critical value, thermal cracking occurs, which destroys structural continuity. Temperature problems and those associated with thermal stress state should be resolved to pre-assess and prevent potential cracking. This problem has enjoyed the attention of specialists, and it has been the subject of numerous research projects. Materials and methods. The overview is based on the information about implemented research projects focused on the thermal cracking of mass concrete dams and its prevention. Computer modeling techniques were applied to develop a mathematical model capable of projecting and assessing the potential cracking of mass concrete. Results. The co-authors have compiled an overview of advanced approaches to the assessment of potential thermal crack formation, contemporary problem-solving methods and selected research findings obtained using the finite element method. The co-authors offer a thermal behaviour/thermal stress state projection methodology for solid concrete, as well as a thermal crack formation assessment methodology. Conclusions. The thermal cracking problem has not been solved yet. The proposed methodology and a projection-oriented numerical model can be used as a reference by civil engineers in the process of designing and constructing concrete gravity dams. It may help to reduce cracking probability caused by heat evolution in cement.

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“…Using these measurements, it is possible to obtain state of thermal stress, which is of great importance for the assessment of stability and safety of these structures. A great number of research papers devoted to this subject is available in literature [1], [2], [3], [4]. In this paper, the temperature of the water of "Bileca" reservoir is determined according to Bofang model [1], based on measurements of water temperatures at "Grancarevo" dam.…”

Section: Introductionmentioning

confidence: 99%

Jedna Metoda Određivanja Parametara Bofangovog Modela Na Primeru Akumulacije "Bileća"

Mirković¹,

Ivanović²,

Pavić³

et al. 2019

Zbornik GFS

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In this research paper, measurement data of air and water temperatures and water levels for "Bileca" reservoir for a period between 1967. and 2017. are presented. Based on the averaged measurement data values, an analytical expressions for amplitude of periodic temperature variation of "Bileca" reservoir are derived and an average annual temperature, as a function of the observed depth, is obtained, based on Bofang model. The obtained results allow thermal stress analysis, which represents an important factor for stability and safety monitoring of dams.

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Computation of Thermal-Stresses and Contraction Joint Distance of RCC Dams

Cited by 25 publications

References 4 publications

Thermal-stress behaviour of RCC gravity dams

Thermal-stress behaviour of RCC gravity dams

The problem of temperature cracking in concrete gravity dams

Jedna Metoda Određivanja Parametara Bofangovog Modela Na Primeru Akumulacije "Bileća"

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