Softened Truss Model for FRP Strengthened RC Members Under Torsion Including Tension Stiffening Effect

Ramancha, M K and Mondal, T G and S, Suriya Prakash (2015) Softened Truss Model for FRP Strengthened RC Members Under Torsion Including Tension Stiffening Effect. In: Advances in Structural Engineering: Mechanics. Springer, India, pp. 513-526. ISBN 978-81-322-2189-0

Full text not available from this repository. (Request a copy)


This paper presents an analytical model for prediction of torsional behavior of reinforced concrete beams strengthened with fiber reinforced plastics (FRP). Improved model proposed in this study is based on softened truss model (STM) which was developed to predict the response of reinforced concrete (RC) members under torsional loading. Tensile strength of concrete being very low, its contribution to torsional capacity of a RC member was neglected in the original STM. However, previous studies have suggested that neglecting tension stiffening may lead to considerable discrepancies in STM predictions. Therefore, in the present study the original STM has been modified to include the effect of tension stiffening for improved predictions of FRP strengthened RC beams. The developed model has been validated with experimental data obtained from literature. The proposed model shows the contribution of externally bonded FRP to the torsional capacity of RC members in addition to enhancing the ductility and is well supported by the experimental results. RC beams with two different FRP configurations, i.e. continuously wrapped and strip wise wrapped, were considered in this study. The analytical prediction of the overall torque-twist behavior compare favorably with the test data. The developed model can also be used for future parametric studies on FRP retrofitted RC beams under torsion.

[error in script]
IITH Creators:
IITH CreatorsORCiD
S, Suriya Prakash
Item Type: Book Section
Uncontrolled Keywords: Torsional, Softened truss, FRP, Stiffening, Torque-twist
Subjects: Civil Engineering > Soil Structure Interaction
Divisions: Department of Civil Engineering
Depositing User: Team Library
Date Deposited: 12 Nov 2015 06:58
Last Modified: 26 Jul 2017 09:04
Publisher URL:
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 2014 Statistics for this ePrint Item