Title:
Prestressed Concrete Rectangular Beams Subjected to Sustained Torque
Author(s):
Atheel E. Allos and Ali H. Rashid
Publication:
Structural Journal
Volume:
86
Issue:
4
Appears on pages(s):
469-472
Keywords:
beams (supports); creep properties; loads (forces); torsion; post-tensioning; prestressed concrete; prestressing; rectangular beams; reinforcing steels; research; stiffness; strength; tests; torsion tests; Structural Research
DOI:
10.14359/2972
Date:
7/1/1989
Abstract:
Paper investigates the long-term behavior of prestressed concrete beams subjected to pure torsion. Tests on eight post-tensioned prestressed concrete beams subjected to sustained torque, together with four companion beams tested to determine the short-term torsional behavior, are reported. The anticipated final coefficient of long-term rotation varied from 1.39 at 3.92. This coefficient was found to increase with an increasing amount of sustained torque applied, a decreasing amount of stirrups, and an increasing amount of prestress.