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Advances in Concrete Construction
  Volume 7, Number 1, February 2019, pages 39-50

Comprehensive experimental investigation on mechanical behavior for types of reinforced concrete Haunched beam
Hasan M. Albegmprli, M. Eren Gülşan and Abdulkadir Cevik

Abstract     [Full Text]
    This study presents a comprehensive experimental investigation on mostly encountered types of Reinforced Concrete Haunched Beams (RCHBs) where three modes of RCHBs investigated; the diversity of studied beams makes it a pioneer in this topic. The experimental study consists of twenty RCHBs and four prismatic beams. Effects of important parameters including beam type, the inclination angle, flexure and compressive reinforcement, shear reinforcement on mechanical behavior and failure mode of each mode of RCHBs were examined in detail. Furthermore crack propagation at certain load levels were inspected and visualized for each RCHB mode. The results confirm that RCHBs have different behavior in shear as compared to the prismatic beams. At the same time, different mechanical behavior was observed between the modes of RCHBs. Therefore, RCHBs were classified into three modes according to the inclination shape and mode of failure (Modes A, B and C). However, it was observed that there is no significant difference between RCHBs and prismatic beams regarding flexural behavior. Moreover, a new and unified formula was proposed to predict the critical effective depth of all modes of RCHBs that is very useful to predict the critical section for failure.
Key Words
    Haunched beams; load capacity; load-deflection curve; failure mode; crack propagation
Hasan M. Albegmprli: Engineering Technical College, Building and Construction Engineering Department, Northern Technical University, Mosul, Iraq
M. Eren Gülşan and Abdulkadir Cevik: Civil Engineering Department, Gaziantep University, University Avenue - Central Campus, Gaziantep, Turkey

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