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Development of Constitutive Model for Precast Prestressed Concrete Segmental Columns


Affiliations
1 Department of Civil Engineering, University of Putra Malaysia, Serdang, Malaysia
2 Department of Civil Engineering, Universiti Teknologi Petronas, Malaysia
 

The interest of using precast segmental columns in construction of concrete bridges has significantly increased in recent years. One research area of concrete bridges is the application of Precast Prestressed Concrete Segmental (PPCS) Column in any structural analysis software or FE programcode. Modeling a PPCS column,which consists of various materials with interaction between them, is complicated and time-consuming. This research attempts to formulate the stiffness matrix of PPCS columns in order to formthe constitutive model in linear form to evaluate the response of the columns. A two-dimensional finite element model is presented in the finite element package ANSYS. Parametric studies are conducted by finite element models to verify the constitutive models for the PPCS column with a different number of concrete segments. Comparison between the constitutive model and the FE program results indicates that the constitutive model is accurate enough to predict the deformation of the PPCS columns.
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  • Development of Constitutive Model for Precast Prestressed Concrete Segmental Columns

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Authors

M. Hafezolghorani Esfahani
Department of Civil Engineering, University of Putra Malaysia, Serdang, Malaysia
F. Hejazi
Department of Civil Engineering, University of Putra Malaysia, Serdang, Malaysia
R. Vaghei
Department of Civil Engineering, University of Putra Malaysia, Serdang, Malaysia
E. Nikbakht
Department of Civil Engineering, Universiti Teknologi Petronas, Malaysia
D. C. J. Tze
Department of Civil Engineering, University of Putra Malaysia, Serdang, Malaysia

Abstract


The interest of using precast segmental columns in construction of concrete bridges has significantly increased in recent years. One research area of concrete bridges is the application of Precast Prestressed Concrete Segmental (PPCS) Column in any structural analysis software or FE programcode. Modeling a PPCS column,which consists of various materials with interaction between them, is complicated and time-consuming. This research attempts to formulate the stiffness matrix of PPCS columns in order to formthe constitutive model in linear form to evaluate the response of the columns. A two-dimensional finite element model is presented in the finite element package ANSYS. Parametric studies are conducted by finite element models to verify the constitutive models for the PPCS column with a different number of concrete segments. Comparison between the constitutive model and the FE program results indicates that the constitutive model is accurate enough to predict the deformation of the PPCS columns.