Prestressed Composite Beams: Behavior, Analysis, and Design
Properties of Pre- and Post-Tensioned Hybrid Epoxy–Cement Concrete Members for Construction Applications, wiley, ss.121-136, 2026
- Yayın Türü: Kitapta Bölüm / Araştırma Kitabı
- Basım Tarihi: 2026
- Doi Numarası: 10.1002/9781394219384.ch8
- Yayınevi: wiley
- Sayfa Sayıları: ss.121-136
- Anahtar Kelimeler: composite action, crack control, deflection, external tendons, finite element modeling, flexural behavior, hybrid systems, interface slip, prestressed composite beams, steel–concrete interaction, sustainable structural design, time-dependent effects
- İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet
Özet
Prestressed composite beams embody the synergy of composite action and prestressing mechanics, offering a structural system that is both efficient and resilient. By integrating the compressive capacity of concrete with the tensile strength of steel, and further enhancing performance through prestressing, these beams achieve superior stiffness, crack control, and long-term durability. This chapter provides a comprehensive examination of their behavior, analysis, and design. The discussion highlights the influence of tendon configuration, interface conditions, and staged construction on flexural response, deflection, and cracking patterns. Analytical approaches—including the equivalent load method, nonlinear modeling, and finite element simulations—are explored to capture stress redistribution, time-dependent losses, and ultimate capacity. Experimental findings confirm that prestressing delays crack initiation, improves ductility, and enhances fatigue resistance, while external tendons offer adjustability and ease of maintenance. Design principles are contextualized within modern code provisions, emphasizing serviceability, limit states, and sustainability. Emerging innovations such as hybrid systems with fiber-reinforced polymers, ultra-high-performance concrete, and corrugated webs are also discussed, reflecting the ongoing evolution of prestressed composite technology. Collectively, the chapter establishes a holistic framework for understanding and designing prestressed composite beams, positioning them as a cornerstone of modern infrastructure where efficiency, adaptability, and resilience are paramount.