Study on Seismic Collapse Fragility of Corroded Platform Canopies with Different Fortification Intensities in China
Source abstract
Abstract
Twelve reinforced concrete (RC) railway platform canopies were designed for zones with different seismic fortification intensities (SFIs) in accordance with the Code for Seismic Design of Buildings (2024 Edition) GB/T 50011-2010. Numerical models were created in OpenSees for each structure under three conditions: no corrosion, 5% corrosion loss of reinforcement, and 15% corrosion loss of reinforcement, using the Modified Ibarra–Medina–Krawinkler (ModIMK) hysteretic model. Through IDA, seismic collapse fragility was assessed in accordance with the requirements of the Standard for Anti-collapse Design of Building Structures T/CECS 392-2021. The results are: (1) Double-column canopies strongly resist deterioration from reinforcement corrosion. Each structure with different SFIs meets the code’s collapse probability limit under all three corrosion levels when subjected to the maximum considered earthquake (MCE) and the extreme considered earthquake (ECE, an earthquake larger than MCE). (2) When subjected to MCE, Single-column canopies with different SFIs also meet the code’s collapse probability limit under the three corrosion levels. (3) When subjected to ECE, the collapse probability of single-column canopies with 5% corrosion increases compared to uncorroded structures at SFIs ranging from 6 to 8; for SFIs 8.5 and 9, the collapse probability decreases. The structure with SFI 8.5 has the highest risk and does not comply with the code. (4) When subjected to ECE, the collapse probability of the single-column canopy with 15% corrosion increases significantly compared to uncorroded structures at all SFIs. Structures with SFIs ranging from 7.5 to 9 fail to meet code requirements. This paper systematically investigates the collapse fragility of platform canopies with different seismic fortification intensities in China, examining three corrosion states: no corrosion, 5% corrosion, and 15% corrosion. It provides important guidance for the rational design of platform canopies and for analyzing the impact of corrosion levels on their collapse behavior.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Structural Response to Dynamic Loads · Concrete Corrosion and Durability · Railway Engineering and Dynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
Key Laboratory of Earthquake Engineering and Engineering Vibration, China Earthquake Administration, Harbin 150080, China
Funding
Institute of Engineering Mechanics, China Earthquake Administration · Heilongjiang Provincial Natural Science Foundation of China
References (27)
Show source-provided references
1. Seismic performance analysis of slab-shell structures platform canopy of railway passenger station
2. Chang, Y.Z., and Kuang, J.Y. (2024). Seismic performance of prefabricated platform canopy with mortise-tenon connection. J. Railw. Eng. Soc., 41, (In Chinese).
3. Study on seismic performance of cast-in-place reinforced concrete single-column canopy structure of railway platform
4. Seismic performance of mortise-tenon joint in prefabricated platform canopy10.1016/j.istruc.2024.107512 ↗
5. Experimental and numerical study on seismic performance of assembled platform canopy with mortise-tenon joints10.1016/j.soildyn.2024.108815 ↗
6. Research on progressive collapse capacity of typical platform with column canopy structures
7. Progressive collapse capacity analysis of platform canopies with single-column
8. Hysteretic models that incorporate strength and stiffness deterioration10.1002/eqe.495 ↗
9. Lignos, D.G. (2013). Sidesway Collapse of Deteriorating Structural Systems Under Seismic Excitations. [Ph.D. Thesis, Stanford University].
10. Deterioration modeling of steel components in support of collapse prediction of steel moment frames under earthquake loading10.1061/(ASCE)ST.1943-541X.0000376 ↗
11. Haselton, C.B., Liel, A.B., and Lange, S.T. (2008). Beam-Column Element Model Calibrated for Predicting Flexural Response Leading to Global Collapse of RC Frame Buildings, Pacific Earthquake Engineering Research Center.
12. Calibration of model to simulate response of reinforced concrete beam-columns to collapse
13. Identification of the hysteretic model parameters for reinforced concrete circular columns based on the modified ibarra-medina-krawinkler material model
14. Liu, H.B., Lin, J.Q., and Liu, J.L. (2025). Development of Phenomenological Model for RC Circular Columns. Appl. Sci., 15.10.3390/app15094841 ↗
15. Liu, H.B., Lin, J.Q., and Liu, J.L. (2025, January 3). Research on modified IMK hysteretic model for RC circular columns failing in flexural mode. Proceedings of the 20th Conference on Seismic Technology for High-Rise Buildings (Volume I), Hangzhou, China.
16. Phenomenological hysteretic model for corroded RC columns10.1016/j.engstruct.2020.110315 ↗
17. Liu, H.B., Lin, J.Q., and Liu, J.L. (2024). Deterioration Model for Corroded Circular Columns. Appl. Sci., 14.10.3390/app14177983 ↗
18. (2024). China Ministry of Housing and Urban-Rural Development of the People’s Republic of ChinaCode for Seismic Design of Buildings. (Standard No. GB 50011-2010 (2024)). (In Chinese).
19. (2021). China Association for Standardization of Engineering ConstructionStandard for Anti-Collapse Design of Building Structures. (Standard No. T/CECS 392-2021). (In Chinese).
20. Ibarra, L.F. (2004). Global Collapse of Frame Structures Under Seismic Excitations. [Doctoral Dissertation, Stanford University].
21. A practical method for proper modeling of structural damping in inelastic plane structural systems10.1016/j.compstruc.2009.08.001 ↗
22. Study on the seismic collapse resistance of RC frame structures with equal spans in zones with seismic intensity VII
23. (2009). Quantification of Building Seismic Performance Factors (Standard No. ATC-63).
24. Evaluation of collapse resistance of RC frame structures for Chinese schools in seismic design categories B and C10.1007/s11803-011-0073-1 ↗
25. Yang, W. (2016). Study on the Seismic Fragility of RC Frame Structures. [Master’s Thesis, Xi’an University of Architecture & Technology]. (In Chinese).
26. Venture, S., and Guidelines Development Committee (2000). Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings.
27. Statistics and analysis on risk of earthquake collapse of RC frame structures with different fortification intensities