Study on the Ultimate Bearing Capacity of Ultra-High Performance Concrete Walls Under Single-Sided Thermal Load and Eccentric Compression
Source abstract
Abstract
To develop an ultra-high performance concrete (UHPC) wall structure suitable for nuclear power plant applications, this study establishes a finite element model to evaluate the ultimate bearing capacity of UHPC walls under eccentric compression with single-sided thermal loading during accident conditions. The accuracy and reliability of the finite element analysis (FEA) method were rigorously validated by simulating and replicating experimental results using the same modeling approach adopted in this study. Based on the validated model, the influence of single-sided thermal loading on the ultimate bearing capacity of UHPC walls under nuclear power plant accident conditions was thoroughly investigated. Key parameters—including the reinforcement ratio, steel fiber volume fraction, temperature, eccentricity, and concrete strength grade—were systematically analyzed to determine their effects on the ultimate bearing capacity of UHPC wall specimens. The results demonstrate that the reinforcement ratio, steel fiber volume fraction, temperature, eccentricity, and concrete strength grade significantly affect the degradation rate of the ultimate load of UHPC walls as the temperature increases. Additionally, this paper proposes a calculation method for the normal section bearing capacity of rectangular cross-sections in UHPC large eccentric compression members under single-sided thermal loads. These findings provide theoretical support and scientific evidence for the design of new UHPC structural specimens in nuclear power plants.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Structural Behavior of Reinforced Concrete · Structural Load-Bearing Analysis · Structural Analysis and Optimization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil Engineering, School of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, China
References (37)
Show source-provided references
1. Bhardwaj, S.R., Varma, A.H., and Sener, K.C. (2015, January 10–14). On the Calculation of Design Demands for Accident thermal Loading Combinations. Proceedings of the 23rd Conference on Structural Mechanics in Reactor Technology, Manchester, UK.
2. Sener, K.C., Varma, A.H., and Bhardwaj, S.R. (2015, January 10–14). Accident Thermal Loading Effects on Seismic Behavior of Safety-Related Nuclear Structures. Proceedings of the Transactions of the 23rd International Conference on Structural Mechanics in Reactor Technology (SMiRT-23), Manchester, UK.
3. Advances in the application of ultra-high performance concrete
4. Composition of reactive powder concretes10.1016/0008-8846(95)00144-2 ↗
5. Experimental study on the flexural behavior of ultra-high performance fiber-reinforced concrete slabs
6. Experimental study on the flexural performance of reinforced UHPC slabs
7. Research and application of ultra-high performance concrete in China
8. Research and application progress of ultra-high performance concrete in bridge engineering at home and abroad
9. Improvement effect of fiber alignment on resistance to elevated temperature of ultra-high performance concrete10.1016/j.compositesb.2019.107454 ↗
10. Mechanical properties of steel fiber-reinforced UHPC mixtures exposed to elevated temperature: Effects of exposure duration and fiber content10.1016/j.compositesb.2018.12.083 ↗
11. A review: Material and structural properties of UHPC at elevated temperatures or fire conditions10.1016/j.cemconcomp.2021.104212 ↗
12. Utilization of hybrid sisal and steel fibers to improve elevated temperature resistance of ultra-high performance concrete10.1016/j.cemconcomp.2022.104555 ↗
13. Spalling Behavior and Residual Resistance of Fiber Reinforced Ultra-high Performance Concrete after Exposure to High Temperatures
14. Chen, H.J., Chen, C., and Lin, H.S. (2021). Flexural behavior of ultra-high performance fiber-reinforced concrete beams after exposure to high temperatures. J. Mater., 14.10.3390/ma14185400 ↗
15. Experimental behavior of ultra-high performance fiber reinforced concrete beams under fire conditions10.1016/j.engstruct.2020.110316 ↗
16. Experimental study on shear performance of ultra-high performance concrete beams at elevated temperatures10.1016/j.engstruct.2023.116304 ↗
17. Fire resistance of ultra-high performance concrete columns subjected to axial and eccentric loading10.1016/j.engstruct.2021.113158 ↗
18. Fire Response of Ultra-high Performance Concrete Beams
19. Evaluation of the Mechanical Properties of 200 MPa Ultra-high-strength Concrete at Elevated Temperatures and Residual Strength of Column10.1016/j.conbuildmat.2015.03.074 ↗
20. Christ, R., Lerner, L.R., and Ehrenbring, H. (2023). Evaluation of Ultra-high Performance Concrete Columns at High Temperatures after 180 Days of Curing. J. Build., 13.10.3390/buildings13092254 ↗
21. Effect of temperature on mechanical properties of ultra-high performance concrete10.1002/fam.2979 ↗
22. Design methods for ultra-high performance concrete structures
23. Luo, B.F. (2013). Study on Explosive Spalling Rules and Mechanical Properties of Reactive Powder Concrete at Elevated Temperatures. [Ph.D. Dissertation, Harbin Institute of Technology].
24. Wang, S.N. (2022). Study on the Elastoplastic Damage Constitutive Relationship of Ultra-High Performance Concrete. [Ph.D. Dissertation, Wuhan University].
25. Quantifying fire insulation effects on the fire response of hybrid-fiber reinforced reactive powder concrete beams10.1007/s10694-019-00937-2 ↗
26. Experimental Study on the Ultimate Bearing Capacity of Reactive Powder Concrete Arches
27. Hao, X.H. (2018). Study on Thermophysical Parameters and Temperature Field of Reactive Powder Concrete at High Temperatures. [Master’s Thesis, Shijiazhuang Tiedao University].
28. European Committee for Standardization (2007). Eurocode 3: Design of Steel Structures—Part 1–2: General Rules—Structural Fire Design, European Committee for Standardization.
29. British Standards Institution (1990). Structural Use of Steelwork in Building—Part 8: Code of Practice for Fire Resistance Design, BSI.
30. Lie, T.T., and Chabot, M. (1988). Experimental Studies on the Fire Resistance of Hollow Steel Columns Filled with Plain Concrete, National Research Council Canada, Institute for Research in Construction. NRC-CNRC Internal Report.
31. (1999). Fire—Resistance Tests—Elements of Building Construction—Part 1: General Requirements (Standard No. ISO 834-1:1999).
32. Cummins, W.E. (2008). AP1000 Design Control Document, Westinghouse Electric Company LLC. R. APP-GW-GL-700, Rev. 17.
33. MHI, Ltd. (2011). Auxiliary Systems US-APWR Design Control Document Contents, MHI, Ltd.
34. (2010). Design Requirements for Concrete Structures Related to Nuclear Safety in Pressurized Water Reactor Nuclear Power Plants (Standard No. NB/T 20012-2010).
35. Analysis of LOCA temperature field distribution and thermal internal forces in concrete containment
36. Experimental Study on Eccentric Compression Performance of Ultra-High Performance Concrete Columns
37. Simplified calculation of the ultimate bearing capacity of reinforced concrete compression-bending members at high temperatures