Analytical Investigation of Effects of Twisted Reinforcement Cage in a 60-ft Long Pier

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Title: Analytical Investigation of Effects of Twisted Reinforcement Cage in a 60-ft Long Pier

Author(s): Mark Fintel and S. K. Ghosh

Publication: Concrete International

Volume: 6

Issue: 9

Appears on pages(s): 21-24

Keywords: angle of twist; axial loads; bending moments; flexural strength; piers; reinforced concrete; reinforcing steels; shear strength; stresses; torsion.

Date: 9/1/1984

Abstract:
During the concreting of long reinforced concrete piers, the reinforcing bar cages may become twisted from the construction process. Possible effects of the resulting torsional stresses on the flexural and shear strength of a 60 ft (18.3 m) long, 48 in. (1219 mm) diameter pier, in which the reinforcing cage had twisted by 270 deg about the vertical axis, are investigated in this case history study.*