Belirgin Düşey Yük Etkisindeki Betonarme Kirişlerin Çevrimsel Yükler Altındaki Davranışı Üzerine Deneysel Bir İnceleme

Year 2020, Volume: 31 Issue: 1, 9683 - 9709, 01.01.2020

Cem Aydemir , Müberra Eser Aydemir , Pınar Yıldırım

https://doi.org/10.18400/tekderg.341401

Cited By: 2

Abstract

Bu
çalışmada tersinir çevrimsel yükle zorlanan betonarme kirişlerin düşey işletme
yükü etkisini içeren ve içermeyen yüklemeler altındaki davranışları deneysel
olarak incelenmiştir. Bu incelemelerde düşey yük etkisinin kuvvet, çevrimsel
yük etkisinin yer değiştirme kontrollü uygulandığı yükleme geçmişiyle elde
edilen deneysel sonuçlar, artan genlikli çevrimsel yer değiştirme uygulanan
kontrol numunelerinin deneysel sonuçlarıyla ve ayrıca Türk Deprem Yönetmeliği
Hasar Sınırı Yaklaşımı kabulleriyle elde edilen analitik sonuçlarla karşılaştırılmalı
olarak irdelenmiştir. Bu incelemelerde kiriş mesnet kesitlerinin
boyutlandırılmasında belirgin düzeydeki işletme yükünün, aşırı zorlanan plastik
mafsal kesimlerinin tek doğrultulu çevrimsel davranış sergilemesine ve
yönetmelikteki Hasar Sınırı Yaklaşımıyla belirlenen dönme kapasitesinin oldukça
üzerinde plastik dönme kapasitesine neden olduğu tespit edilmiştir. 

Keywords

Kesit hasar sınırları, birim şekil değiştirme sınırları, belirgin düşey yük etkisi, deneysel yük yer değiştirme ilişkileri

An Experimental Research on Hysteretic Behavior of RC Beams under Significant Gravity Loads

Abstract

In this study, an
experimental research to obtain the effects of significant gravity load on the
hysteretic behaviors of RC beams is presented. To this purpose, an experimental
program is carried out in which gravity loads are applied by force controlled test
procedure whereas cyclic loads are applied by displacement controlled test
procedure. It is found from the experimental results that significant gravity
load is an effective parameter on plastic hinge mechanism. The experimental
results of specimens with and without significant gravity load are compared to
each other. Experimentally observed damage states, plastic hinge zones and
deformation demands are also compared with the respective values proposed by
Turkish Seismic Design Code. The results of the limited number of test
specimens show that, the loading procedure with significant gravity load effect
leads to the formation of non-reversing plastic hinge and analytical collapse
limit given in Turkish Seismic Design Code remains very conservative.

Keywords

Damage limit states, material strain limits, significant gravity load effects, non-reversing plastic hinge

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