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Numerical simulation and design recommendations for prestressed steel stayed columns subjected to static and dynamic
Aya AboElnaga1, Mohamed Mortagi1, Mohamed E El Madawy1
1Structural Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, 35516, Dakahlia, Egypt.
Scientific Reports
|August 20, 2025
Summary
This study explores the buckling behavior of prestressed steel stayed columns (PSCs) under axial and seismic loads. New predictive formulas are proposed for two-level PSCs, enhancing resilient structural design.
Area of Science:
- Structural Engineering
- Computational Mechanics
- Earthquake Engineering
Background:
- Prestressed steel stayed columns (PSCs) are crucial structural elements.
- Existing research often overlooks dynamic behavior and complex configurations.
- A comprehensive understanding of PSC buckling under various loads is needed.
Purpose of the Study:
- To investigate the static and dynamic behavior of PSCs.
- To analyze buckling performance under axial and seismic loading.
- To develop predictive formulas for novel two-level PSC designs.
Main Methods:
- Development of advanced finite element (FE) models in ABAQUS with automated scripting.
- Incorporation of geometric and material nonlinearities in FE models.
- Validation of models against experimental and analytical data.
- Parametric study examining cross-arm length, cable diameter, and geometric proportions.
Main Results:
- Validated FE models accurately simulate PSC behavior.
- Novel two-level cross-arm configurations demonstrate significant potential.
- Parametric analysis reveals key factors influencing buckling capacity.
- New predictive formulas for ultimate buckling capacity of two-level PSCs are derived.
Conclusions:
- The study provides valuable insights into the dynamic performance of PSC systems.
- The proposed predictive formulas facilitate efficient and resilient preliminary design of two-level PSCs.
- This research advances the understanding and application of PSCs in structural engineering.
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