DETERMINING MOMENT-CURVATURE RELATIONSHIP OF REINFORCED CONCRETE COLUMNS

Yıl 2017, Sayı: 1, 52 - 58, 09.11.2017

Gokhan Dok Hakan Ozturk Aydin Demir

Öz

Determining the behavior of reinforced concrete (RC)
members is crucial in RC structures. The nonlinear attributes of RC members are
defined according to the cross sectional behavior of RC members to evaluate the
performance of structures. To be able to determine cross sectional behavior of
RC members, moment-curvature relationship should be known well.  In the RC structures, using moment-curvature
(MC) relationship is the best way to represent cross sectional behavior and
nonlinear properties of RC members. The MC relationship of RC cross sections
can be evaluated by both experimentally or numerically. Some experimental
studies on RC members which are applied with 1:1 scale can be difficult to
define moment-curvature relationship. The purpose of the study is to obtain the
MC relationship of RC rectangular and circular 
and circular columns numerically. By the way this study is tried to
achieve determining the parameters which affect MC relationship of RC members.
In the study, to evaluate MC relationship of RC members XTRACT programme which
represents influentially MC relationship is used. Compressive strength of
concrete, axial load on the RC sections, longitudinal and transverse
reinforcing ratio, are selected as comparison parameters which affect MC relationship.
As a consequence of this study curvature ductility and effective flexural
stiffness of RC rectangular and circular sections are determined using these
parameters.  Effective flexural stiffness
is compared with the values defined in design codes. As a result of comparison,
it is observed that the moment curvature relationship can be defined as a
formulation according to the parameters which affect directly. 

Anahtar Kelimeler

Moment-curvature relationship, Reinforced concrete columns

Kaynakça

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