Dynamic Performance Analysis of Precast Segment Column Reinforced with CFRP Subject to Vehicle Collision
Abstract
:1. Introduction
2. Numerical Model Validation
2.1. Precast Segment Column
2.2. Steel Column Reinforced with CFRP
2.3. Results and Validation
3. Numerical Model of Bridge under Vehicle Collision
3.1. Bridge Model
3.2. Vehicle Model
4. Results of PSC with and without CFRP
4.1. Impact Force
4.2. Shear Force
4.3. Bending Moment
4.4. Failure Modes
5. Results of CFRP-Strengthened Piers under Different Factors
5.1. Influence of Concrete Strength
5.2. Influence of CFRP Thickness
6. Conclusions
- (1)
- The use of a PSC with CFRP can result in a notable enhancement of the capacity to resist shear forces and bending moments. At a speed of 100 km/h, the PSC reinforced with CFRP demonstrated an increase in shear force and bending moment values in the impact area, with respective increases of 7.1% and 7.6%.
- (2)
- The predominant failure mode of the PSC with CFRP is the crushing of the bottom segment, whereas the PSC without CFRP exhibits a tendency towards shear failure. Furthermore, the maximum impact force of the PSC with CFRP is greater than that of the PSC without CFRP.
- (3)
- Enhancing the concrete strength of PSC has the effect of improving the bearing performance. In comparison with a maximum shear force and moment of 30 MPa, the PSC with 70 MPa demonstrates increases of 12.1% and 44.1%, respectively.
- (4)
- An increase in the thickness of CFRP has been observed to enhance the dynamic load-bearing capacity of PSC. Compared with the CFRP thickness of 2 mm, the maximum shear force and moment in the impact zone of PSC with a CFRP thickness of 6 mm, respectively, increased by 3.1% and 7.5%.
- (5)
- An increase in the thickness of the CFRP and the strength of the concrete can appropriately enhance the impact resistance of PSC. Furthermore, the degree of damage to the concrete will also be reduced.
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Case | Velocity of Vehicle (km/h) | Concrete Strength (MPa) | Thickness of CFRP (mm) | With or without CFRP |
---|---|---|---|---|
C1 | 60 | 30 | - | without |
C2 | 80 | 30 | - | without |
C3 | 100 | 30 | - | without |
C4 | 120 | 30 | - | without |
C5 | 60 | 30 | 2 | with |
C6 | 80 | 30 | 2 | with |
C7 | 100 | 30 | 2 | with |
C8 | 120 | 30 | 2 | with |
C9 | 100 | 50 | 2 | with |
C10 | 100 | 70 | 2 | with |
C11 | 100 | 30 | 4 | with |
C12 | 100 | 30 | 6 | with |
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Han, R.; Zhou, H.; Wu, M. Dynamic Performance Analysis of Precast Segment Column Reinforced with CFRP Subject to Vehicle Collision. Buildings 2024, 14, 2658. https://doi.org/10.3390/buildings14092658
Han R, Zhou H, Wu M. Dynamic Performance Analysis of Precast Segment Column Reinforced with CFRP Subject to Vehicle Collision. Buildings. 2024; 14(9):2658. https://doi.org/10.3390/buildings14092658
Chicago/Turabian StyleHan, Runbo, Hai Zhou, and Min Wu. 2024. "Dynamic Performance Analysis of Precast Segment Column Reinforced with CFRP Subject to Vehicle Collision" Buildings 14, no. 9: 2658. https://doi.org/10.3390/buildings14092658