Research Article Published: August 19, 2025 Volume 1, Issue 6

ABAQUS-Based Failure Mode Analysis of a High-Traffic Pedestrian Bridge: Stress, Yielding, and Corrosion Effects in Lagos, Nigeria

Authors

Isaac Enuma*1

Affiliation: Department of Civil Engineering, Faculty of Engineering, University of Benin, Benin city, Edo State, Nigeria

Uchenna Ukpai1

Affiliation: Department of Civil Engineering, Faculty of Engineering, University of Benin, Benin city, Edo State, Nigeria

Idonije Edward1

Affiliation: Department of Civil Engineering, Faculty of Engineering, University of Benin, Benin city, Edo State, Nigeria

Aisosa Edokpayi1

Affiliation: Department of Civil Engineering, Faculty of Engineering, University of Benin, Benin city, Edo State, Nigeria

Abstract

The structural integrity of pedestrian bridges is crucial for ensuring public safety, particularly in high-traffic urban areas. This study presents a finite element analysis (FEA) of the Ojota Pedestrian Bridge in Lagos, Nigeria, using ABAQUS software to assess its load-carrying capacity, material behavior, and potential failure modes under various loading conditions. The objective is to evaluate the bridge's performance under service and extreme loads and to provide insights for maintenance and safety improvements.

A 3D finite element model of the bridge was developed, incorporating accurate material properties, boundary conditions, and realistic load scenarios such as pedestrian-induced forces and environmental effects. The model simulated the interaction between structural components, allowing for detailed stress and deformation analysis. A separate corrosion analysis was conducted to simulate long-term material deterioration, assessing the impact of reinforcement loss on structural behavior.

The results highlighted two primary failure mechanisms: reinforcement yielding and concrete crushing. Reinforcement bars reached their yield strength of 500 MPa, especially at mid-span and support regions, indicating potential permanent deformation under excessive loading. Similarly, compressive stress in concrete exceeded its design strength of 30 MPa, suggesting crack formation and localized crushing. The corrosion analysis revealed that a 50% reduction in reinforcement area led to excessive deflections (27.5 mm), surpassing the 22.5 mm serviceability limit and indicating structural instability. The study concludes that while the bridge remains stable under normal conditions, long-term degradation and overloading could compromise its safety, warranting reinforcement optimization, corrosion prevention, and regular monitoring.

Keywords

Finite Element Analysis (FEA) Pedestrian Bridge Safety Structural Integrity ABAQUS Simulation Reinforcement Yielding Concrete Crushing Corrosion Impact Urban Infrastructure Load-Carrying Capacity Material Deterioration

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How to Cite

APA Style:

Enuma, I., Ukpai, U., Idonije, E., & Edokpayi, A. (2025). ABAQUS-Based Failure Mode Analysis of a High-Traffic Pedestrian Bridge: Stress, Yielding, and Corrosion Effects in Lagos, Nigeria. International Journal of Advanced Research in Engineering and Related Sciences, 1(6), 2-20.

IEEE Style:

I. Enuma, U. Ukpai, I. Edward, and A. Edokpayi, "ABAQUS-Based Failure Mode Analysis of a High-Traffic Pedestrian Bridge: Stress, Yielding, and Corrosion Effects in Lagos, Nigeria," International Journal of Advanced Research in Engineering and Related Sciences, vol. 1, no. 6, pp. 2-20, 2025.

References

  1. American Concrete Institute. (2019). Building code requirements for structural concrete (ACI 318-19).
  2. Bentz, E. C. (2000). Finite element modeling of reinforced concrete structures (Doctoral dissertation, University of Toronto).
  3. Biondini, F., & Frangopol, D. M. (2016). Life-cycle performance of deteriorating structural systems under uncertainty. Journal of Structural Engineering, 142(9), F4016001.
  4. Comité Euro-International du Béton. (2010). CEB-FIP model code 2010. Thomas Telford.
  5. Enright, M. P., & Frangopol, D. M. (1998). Service-life prediction of deteriorating concrete bridges. Journal of Structural Engineering, 124(3), 309-317.
  6. Federation Internationale du Beton. (2010). fib model code for concrete structures 2010. Ernst & Sohn.
  7. Gilbert, R. I. (2016). Serviceability design of concrete structures. CRC Press.
  8. Hognestad, E. (1951). A study of combined bending and axial load in reinforced concrete members. University of Illinois Bulletin, 49(22).
  9. Jirásek, M., & Bauer, M. (2012). Computational modeling of cracking in concrete structures. In Computational modelling of concrete structures (pp. 47-60). CRC Press.
  10. Li, B., Maekawa, K., & Okamura, H. (2004). Contact density model for stress transfer across cracks in concrete. Journal of the Faculty of Engineering, 40(1), 25-52.
  11. Mangat, P. S., & Elgarf, M. S. (1999). Flexural strength of concrete beams with corroding reinforcement. ACI Structural Journal, 96(1), 149-158.
  12. Melchers, R. E. (2003). Probabilistic models for corrosion in structural reliability assessment. Journal of Structural Engineering, 129(10), 1364-1370.
  13. Nassif, H., Liu, M., & Ertekin, O. (2003). Dynamic load models for pedestrian bridges. Journal of Bridge Engineering, 8(6), 354-362.
  14. Ngekpe, B. E., Uche, O. A., & Johnson, D. F. (2019). Dynamic analysis of Leventis Footbridge under pedestrian loading. Nigerian Journal of Structural Engineering, 8(2), 45-59.
  15. Olorunfemi, M. O., Laniyan, T. A., & Ajayi, K. T. (2021). Utilization factors of pedestrian overpasses in Akure, Nigeria. Journal of Urban Infrastructure, 15(2), 112-125.
  16. Park, R., & Paulay, T. (1975). Reinforced concrete structures. Wiley.
  17. Rodriguez, J., Ortega, L. M., & Casal, J. (1997). Load carrying capacity of concrete structures with corroded reinforcement. Construction and Building Materials, 11(4), 239-248.
  18. Tuutti, K. (1982). Corrosion of steel in concrete. Swedish Cement and Concrete Research Institute.