A concrete stress-strain model for analysis of high strength reinforced concrete columns

Abstract

A concrete stress-strain model for analysis of eccentrically loaded both short and slender high strength reinforced concrete columns is proposed in this paper. The mathematical model has been developed based on the test data to represent the complete nonlinear stress-strain relationship of high strength concrete ranging from 40 to 90 MPa. Several slender high strength concrete columns available in the literature have been analysed using both proposed nonlinear stress-strain model and the equivalent rectangular stress block model to confirm the reliability and validity of the proposed model. Good agreement has been achieved between the computed theoretical ultimate strength capacities and the test results of high strength concrete columns.

Keywords

• Biaxial bending,High-strength concrete column,Stress-strain relationship,Ultimate strength

Yüksek dayanımlı betonarme kolonların analizi için beton gerilme-birim deformasyon modeli

Öz

Sunulan çalışmada, eksantrik yüklemeye maruz yüksek dayanımlı kısa ve narin betonarme kolonların analizi için beton gerilme-birim deformasyon modeli önerilmektedir. Beton dayanımı 40 ile 90 MPa arasında değişen ve doğrusal olmayan beton gerilme-birim deformasyon modelini temsil eden matematiksel model deneysel verilere dayandırılarak geliştirilmiştir. Beton modelinin güvenilirliğini ve geçerliliğini doğrulamak için literatürde bulunan birçok deneysel kolon önerilen beton modeli ve dikdörtgen gerilme dağılım modeli kullanılarak analiz edilmiştir. Hesaplanan teorik yüksek dayanımlı kolon taşıma gücü değerlerinin test değerleri ile uyumlu olduğu elde edilmiştir.

Anahtar Kelimeler

• İki eksenli eğilme,Yüksek dayanımlı betonarme kolon,Gerilme-şekil değiştirme ilişkisi,Taşıma gücü

Kaynakça

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