Numerical Simulation of Reinforced Concrete Piers after Seawater Freeze–Thaw Cycles
Abstract
:1. Introduction
2. Constitution of Concrete after Seawater Freeze–Thaw Cycles
2.1. Theory of the CDP Model
2.2. Compression Damage of Concrete
2.3. Skeleton Curve
3. Equivalent Meso-Element Model
3.1. Theory of Meso-Element Equivalence
3.2. Heterogeneity of Concrete after Seawater Freeze–Thaw Cycles
4. Experiments and Results
4.1. Experiments
4.2. Results of the Experiments
5. Numerical Analysis Model and Results
5.1. Verification of Numerical Simulation
5.2. Parameter Analysis
5.2.1. Skeleton Curves
5.2.2. Stiffness Degeneration
5.2.3. Cumulative Energy Dissipation
6. Conclusions
7. Further Work
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Water–Cement Ratio | Cement | Fine Aggregate | Coarse Aggregate | Water | Fly Ash | Water Reducer |
---|---|---|---|---|---|---|
0.48 | 373 | 873 | 838 | 180 | 66 | 8.8 |
N | Em(GPa) | Emo (GPa) |
---|---|---|
0 | 31.2 | 22.8 |
25 | 27.9 | 18.6 |
50 | 25.3 | 16.5 |
75 | 21.7 | 13.3 |
100 | 18.5 | 11.2 |
125 | 15.8 | 8.5 |
N | 0 | 25 | 50 | 75 | 100 | 125 |
β | 37.2 | 34.0 | 32.7 | 31.4 | 30.2 | 28.3 |
m | 6.5 | 5.6 | 4.6 | 3.8 | 3.3 | 3.1 |
Parameter | Longitudinal Reinforcement | Stirrup |
---|---|---|
Reinforcement type | HRB400 | HPB300 |
Physical quality | Ribbed | Plain |
Diameter (mm) | 12, 14, or 16 | 8 |
Yield strength (MPa) | 422 | 450 |
Ultimate strength (MPa) | 605 | 550 |
Elongation (%) | 7.2 | 10.4 |
No. | Pm | Δm | ||||
---|---|---|---|---|---|---|
Test (kN) | Simulation (kN) | Deviation (%) | Test (mm) | Simulation (kN) | Deviation (%) | |
JP-F0 | 74.2 | 73.4 | 1.1 | 18 | 17.0 | 5.6 |
JP-F1 | 73.0 | 74.1 | −1.5 | 18 | 17.8 | 1.1 |
JP-F3 | 69.7 | 70.2 | −0.7 | 24 | 23.3 | 2.9 |
JP-F5 | 66.4 | 65.8 | 0.9 | 30 | 26.8 | 10.0 |
No. | Py (kN) | Δy (mm) | Pm (kN) | Δm (mm) | Pu (kN) | Δu (mm) | u |
---|---|---|---|---|---|---|---|
JP-F0 | 53.0 | 8.6 | 73.4 | 17.0 | 60.0 | 42.2 | 5.2 |
JP-F1 | 51.9 | 8.7 | 74.1 | 17.8 | 58.6 | 40.2 | 5.1 |
JP-F3 | 50.9 | 7.5 | 70.2 | 23.3 | 57.7 | 38.2 | 4.9 |
JP-F5 | 48.1 | 8.0 | 65.8 | 26.8 | 54.5 | 40.2 | 5.0 |
JP-A0.225 | 52.5 | 6.5 | 71.8 | 21.3 | 59.5 | 40.32 | 5.6 |
JP-A0.3 | 56.5 | 6.8 | 78.0 | 19.8 | 63.3 | 36.1 | 4.3 |
JP-L12 | 41.9 | 6.5 | 57.0 | 19.3 | 47.5 | 40.3 | 6.0 |
JP-L16 | 61.0 | 8.1 | 77.8 | 26.3 | 69.1 | 40.3 | 5.5 |
JP-J100 | 48.9 | 8.6 | 67.7 | 21.3 | 55.5 | 42.2 | 4.4 |
JP-J50 | 54.7 | 8.7 | 67.4 | 19.8 | 59.7 | 40.2 | 5.5 |
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Teng, F.; Zhang, Y.; Yan, W.; Wang, X.; Li, Y. Numerical Simulation of Reinforced Concrete Piers after Seawater Freeze–Thaw Cycles. Coatings 2022, 12, 1825. https://doi.org/10.3390/coatings12121825
Teng F, Zhang Y, Yan W, Wang X, Li Y. Numerical Simulation of Reinforced Concrete Piers after Seawater Freeze–Thaw Cycles. Coatings. 2022; 12(12):1825. https://doi.org/10.3390/coatings12121825
Chicago/Turabian StyleTeng, Fei, Yueying Zhang, Weidong Yan, Xiaolei Wang, and Yanfeng Li. 2022. "Numerical Simulation of Reinforced Concrete Piers after Seawater Freeze–Thaw Cycles" Coatings 12, no. 12: 1825. https://doi.org/10.3390/coatings12121825