scholarly journals EVALUATION METHOD FOR CRACK WIDTH OF REINFORCED CONCRETE MEMBER CAUSED BY DRYING SHRINKAGE USING SMEARED CRACK MODEL

2006 ◽  
Vol 71 (610) ◽  
pp. 41-48
Author(s):  
Masatoshi ISHIDA ◽  
Toshihide SAKA ◽  
Tetsushi KANDA ◽  
Haruki MOMOSE
Keyword(s):  
Reinforced Concrete ◽  
Crack Width ◽  
Evaluation Method ◽  
Drying Shrinkage ◽  
Crack Model ◽  
Concrete Member ◽  
Reinforced Concrete Member ◽  
Smeared Crack ◽  
Smeared Crack Model

Research on the Crack Stability of Dam Concrete Based on the Measured Monitoring Data

2011 ◽  
Vol 250-253 ◽  
pp. 2713-2718
Author(s):  
Jun Feng Guan ◽  
Yu Hu ◽  
Shun Bo Zhao ◽  
Long Bang Qing ◽  
Qing Bin Li ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Crack Width ◽  
Practical Method ◽  
Monitoring Data ◽  
Theoretical Expression ◽  
Concrete Member ◽  
Crack Control ◽  
Reinforced Concrete Member ◽  
Crack Stability ◽  
Dam Concrete

This paper proposes a theoretical expression for the ultimate relationship between the crack gauge monitoring data and steel stress gauge ones in dam concrete, based on the equation for crack width of reinforced concrete member, when the cracks expanded to the crack-control steel. In addition, a practical method is developed for analyzing and determining the crack stability of dam concrete, which predicts whether a crack elongated to the crack-control steel or not by comparing the observed values to the theoretical ultimate value. The provided method is proven to be proper to evaluate the crack stability of dam, which is simple and practical.

Uncertainty of the smeared crack model applied to RC beams

2020 ◽  
Vol 233 ◽  
pp. 107088 ◽  
Author(s):  
Arvydas Rimkus ◽  
Vladimir Cervenka ◽  
Viktor Gribniak ◽  
Jan Cervenka
Keyword(s):  
Crack Model ◽  
Rc Beams ◽  
Smeared Crack ◽  
Smeared Crack Model

Mesoscopic damage evolution on bonding interface and its influence on macroscopic performance deterioration of reinforced concrete member

2019 ◽  
Vol 08 (02) ◽  
pp. 1950005
Author(s):  
Ying Wang ◽  
Yuqian Zheng ◽  
Xuan Wang
Keyword(s):  
Reinforced Concrete ◽  
Bonding Strength ◽  
Element Model ◽  
Bonding Interface ◽  
Interfacial Damage ◽  
Concrete Member ◽  
Steel Bar ◽  
Reinforced Concrete Member ◽  
Bonding Property ◽  
Performance Deterioration

Slip or debonding of bonding interface is the key cause of the performance degradation or failure of the reinforced concrete (RC) member. In this paper, based on Monte Carlo method, a mesoscopic finite element model composed of mortar, coarse aggregate and steel rebar was established to consider the mesoscopic damage on the bonding interface and its influence on macroscopic performance deterioration of RC specimen. The results show that the simulation results fit well with experimental data. Higher initial interfacial damage results in lower bonding strength and smaller final displacement. Higher mortar modulus could greatly improve the initial bonding property and bonding strength, but slightly increase the final damage. Compared with the RC specimen model with plain steel bar, the model with deformed steel bar shows a longer duration of nonlinear increase for drawing force and lower bonding strength. When confinement is applied, the coalescence of damage zones is prevented due to the effect of thread. Therefore, the application of confinement could increase the bonding strength and the initial bonding property.

Overview of Numerical Simulation Model of Mesoscopic Concrete Crack

2015 ◽  
Vol 744-746 ◽  
pp. 1443-1447
Author(s):  
Si Qi Li ◽  
Yin Bai
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Element Model ◽  
Crack Model ◽  
Discrete Fracture Model ◽  
Model Studies ◽  
Concrete Crack ◽  
Fracture Models ◽  
Smeared Crack ◽  
Smeared Crack Model

Through a number of literature analysis and research, this paper investigates the reviews and comparison under the meso model for numerical simulation of crack in a finite element model (FEM), including discrete fracture model, smeared crack model, fracture mechanics crack model,bond crack model. Studies show that: compared to other fracture models , smeared crack model by eliminating the need to change the unit type and re-division unit grid computing simple and widely used for treatment of concrete cracks in finite element method, the author cites a using smeared crack model example that are discussed in the paper.

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