Title:
Overview of Torsion Design Methods
Author(s):
Camilo Granda Valencia and Eva Lantsoght
Publication:
Symposium Paper
Volume:
344
Issue:
Appears on pages(s):
1-29
Keywords:
codes, concrete, reinforcement, shear, torsion
DOI:
10.14359/51728288
Date:
10/1/2020
Abstract:
Large torsional moments, which need to be considered in a design, can result among others, in structures
with an asymmetric layout or loading. To find the required longitudinal and transverse reinforcement to resist these
torsional moments, the link between the three-dimensional action of the torsional moment and sectional analysis
methods is necessary. This paper reviews the existing methods and code provisions for torsion. First, an overview of
the principles of torsion from the mechanics perspective is given. Then, a survey of the available mechanical models
for torsion is presented. Finally, the code provisions for torsion of ACI 318-19, CSA-A23.3-04, AASHTO-LRFD-
17, EN 1992-1-1:2004, and the fib Model Code 2010 are summarized. Additionally, current research topics on
torsion in structural concrete are summarized. It is expected that with this paper, engineers will have a useful
overview and background knowledge for the design and assessment of torsion-critical elements.