Improved softened truss model for reinforced concrete members under combined loading including torsion

Hareendran, Smrithi P and Kothamuthyala, Sriharsha Reddy and Surya prakash, S (2019) Improved softened truss model for reinforced concrete members under combined loading including torsion. Mechanics of Advanced Materials and Structures, 26 (1). pp. 71-80. ISSN 1537-6494

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


Reinforced concrete (RC) members are often subjected to combinations of axial, shear, and bending loads. Torsion develops in addition to compression, bending, and shearing forces in the case of curved bridges, beams, and columns of bridges with outriggers. This study focuses on developing an improved model for predicting the behavior of RC members under combined actions. A softened truss model (STM) for combined actions (CA-STM) is used as a base and improved in this study. The RC element made of concrete and steel is modeled as a membrane element. Membrane element is a basic unit of negligible dimensions subjected only to in-plane stresses. The cross section of the member is modeled as an assembly of four cracked shear panels. The model includes various assumptions for modeling the geometry to satisfy the equilibrium and compatibility conditions. The model gives a complete solution satisfying the Navier’s principles of mechanics. The developed improved model is capable of predicting the load-deformation response, torque-twist response, strains, and curvatures of RC members from cracking up to the peak loads. The predictions of the developed model are validated with test data of different RC members subjected to various combinations of torsion, flexure, and shear. The major load combinations included in the validations are pure torsion (T), torsion combined with shear (T + V), and torsion combined with shear and bending (T + V+M). Comparison of results shows that the CA-STM model predicted the behavior of RC members reasonably well.

[error in script]
IITH Creators:
IITH CreatorsORCiD
S, Suriya Prakash
Item Type: Article
Uncontrolled Keywords: combined action softened truss model,Combined loading,RC member,torsion,Indexed in Scopus and WoS
Subjects: Civil Engineering
Divisions: Department of Civil Engineering
Depositing User: Library Staff
Date Deposited: 24 Oct 2019 10:50
Last Modified: 31 May 2022 07:06
Publisher URL:
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 6835 Statistics for this ePrint Item