Deformations of Reinforced Concrete Rec- tangular Beams Under Combined Torsion, Bending and shear

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Title: Deformations of Reinforced Concrete Rec- tangular Beams Under Combined Torsion, Bending and shear

Author(s): Surendra K. Ojha

Publication: Journal Proceedings

Volume: 71

Issue: 8

Appears on pages(s): 383-391

Keywords: beams (supports); bending; deformation; defor-mation methods; loads (forces); rectangular beams; rein-forced concrete;

Date: 8/1/1974

Abstract:
Expressions for the post cracking torsional and flexural stiffnesses of rectangular sections are theoretically derived using a space truss model. The inclination of the cracks is introduced as a variable. Based on an earlier evaluation of test data a method is proposed to calculate the stiffnessesthe whole range from the uncrackeced state. In this manner it is possible to ( mations at all loading stages, such as at to the fully calculate beam Service condition. The torque-bending moment ratio influences the de-ations considerably; the crack inclination and the shear also have a considerable influence. The developed quations show good agreement with experimental results.