Numerical Analysis of Post-Tensioned Reinforced Concrete Beam-to-Column Joints
11th World Congress on Civil, Structural, and Environmental Engineering, CSEE 2026, Paris, Fransa, 16 - 18 Nisan 2026, cilt.PartF8, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Cilt numarası: PartF8
- Doi Numarası: 10.11159/icsect26.145
- Basıldığı Şehir: Paris
- Basıldığı Ülke: Fransa
- Anahtar Kelimeler: beam-to-column joint, cast-in-place reinforced concrete, cyclic loading, finite element analysis, Post-tensioning
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
– Post-tensioning technology is particularly prominent for structures with long-span beams. The structural frame system is designed through an appropriate combination of prestressing and reinforcing steel, along with an optimal level of initial tendon stress. In this study, the effect of the mild steel amount on the seismic performance of post-tensioned cast-in-place reinforced concrete beams was investigated. Additionally, a conventional reinforced concrete beam was tested as a reference specimen to clarify the role of prestressing steel in the structural behavior. For this purpose, nonlinear finite element analyses were conducted to simulate the test beams, and a computer model was developed through calibration between the experimental results and numerical analyses. Subsequently, a parametric study was carried out to examine the variations in moment capacity and displacement ductility with respect to the top and bottom steel amounts. Lastly, a summary was prepared to compare the ultimate curvature, confined concrete strain, mild steel strain, and prestressing steel stress levels obtained from the tests, nonlinear analyses, and design requirements.