Modelling Inelastic Hinges using CDM for Nonlinear Analysis of Reinforced Concrete Frame Structures
IR@SERC: CSIR-Structural Engineering Research Centre, Chennai
View Archive Info| Field | Value | |
| Title |
Modelling Inelastic Hinges using CDM for Nonlinear Analysis of Reinforced Concrete Frame Structures
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| Creator |
Rajasankar, J.
Nagesh R. Iyer Prasad, A.M. |
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| Subject |
reinforced concrete frame
plastic hinges continuum damage mechanics plasticity theory nonlinear response |
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| Description |
A new formulation based on lumped plasticity and inelastic hinges is presented in this paper
for nonlinear analysis of Reinforced Concrete (RC) frame structures. Inelastic hinge behaviour is described
using the principles of Continuum Damage Mechanics (CDM). Member formulation contains provisions to
model stiffness degradation due to cracking of concrete and yielding of reinforcing steel. Depending on its
nature, cracking is classified as concentrated or distributed. Concentrated cracking is accounted through a
damage variable and its growth is defined based on strain energy principles. Presence of distributed
flexural cracks in a member is taken care of by modelling it as non-prismatic. Plasticity theory supported
by effective stress concept of CDM is applied to describe the post-yield response. Nonlinear quasi-static
analysis is carried out on a RC column and a wide two-storey RC frame to verify the formulation. The
column is subjected to constant axial load and monotonic lateral load while the frame is subjected to only
lateral load. Computed results are compared with those due to experiments or other numerical methods to
validate the performance of the formulation and also to highlight the contribution of distributed cracking
on global response.
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| Date |
2009
2009 2009 |
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| Type |
Article
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| Identifier |
Computers and Concrete, Vol.6, No.4 2009, pp.319-341
http://hdl.handle.net/123456789/124 |
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| Language |
en
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| Rights |
It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice that the rights are violated then the item would be withdrawn.
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| Publisher |
Techno Press
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