Evaluation of TS500-2000 Shear Strength Provisions for Deep Beams

Year 2019, Volume: 23 Issue: 2, 338 - 342, 25.08.2019

Almıla Uzel

https://doi.org/10.19113/sdufenbed.456213

Abstract

In
order to account for the strut action in point loaded deep beams, TS500-2000
allows use of simple shear strength equations instead of more refined models.
According to TS500, when the clear span-to-depth ratio, l_n/d
is less than 5, the shear strength of deep beams containing both vertical and
horizontal shear reinforcement can be calculated by a simple expression which
accounts for the effect of web reinforcements along with the clear
span-to-depth ratio, l_n/d. In this study, the accuracy and
conservativeness of the shear strength equations for deep beams in the
TS500-2000 are evaluated. ACI-DAfStb evaluation database of shear tests on
point loaded simply supported reinforced concrete members with vertical and
horizontal shear reinforcement, is used for this purpose. Based on the results
obtained, recommendations are made to improve the accuracy of TS500-2000
sectional shear design equations.

Keywords

Deep beams, Shear strength, TS500-2000, TS500-2000

Yüksek Kirişler için TS500-2000 Kayma Dayanımı İlkelerinin Değerlendirilmesi

Abstract

TS500-2000
yönetmeliği, tekil yüklü yüksek kirişlerde meydana gelen kemerlenme etkisini
hesaba katmak için, daha gelişmiş modeller kullanmak yerine basit kayma
dayanımı denklemlerinin kullanmasına izin verir. TS500'e göre, net açıklığı,
faydalı yüksekliğinin 5 katından küçük olan hem dikey hem de yatay kayma
donatısı içeren yüksek kirişlerin kayma dayanımı, her iki doğrultudaki kayma
donatısının ve net açıklığın faydalı yüksekliğe olan oranın etkisini içeren
basit bir kayma dayanımı denklemi ile bulunabilir. Bu çalışmada TS500-2000'deki
kayma dayanımı denklemlerinin doğruluğu ve güvenliği değerlendirilmiştir. Bu
amaçla, düşey ve yatay kayma donatısı içeren, basit mesnetli ve tekil yüklü
betonarme derin kiriş deneylerinden oluşan ACI-DAfStb değerlendirme veritabanı
kullanılmıştır. Elde edilen sonuçlara dayanarak, TS500-2000 kayma dayanımı
denklemlerinin doğruluğunu geliştirmek için öneriler yapılmıştır.

Keywords

Yüksek kirişler, Kayma dayanımı, TS500-2000, Kemerlenme etkisi

References

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