Title:
Design Concepts for Prestressed
Concrete Buildings With Rigid Walls
Author(s):
James R. Libby
Publication:
Concrete International
Volume:
3
Issue:
7
Appears on pages(s):
20-22
Keywords:
cracking (fracturing); creep properties;
deformation; elastic limit; foundations; prestressed
concrete; restraints; shearwalls; shrinkage; ties (rein-forcement).
DOI:
Date:
7/1/1981
Abstract:
The deformations due to concrete creep, shrinkage, and elastic shortening have caused severe cracking in a number of buildings in which pre-stressed concrete floor and roof systems have been used with rigid walls positioned in such a way that the deformations are restrained by the walls. The deformation can result in forces that cause the walls to develop cracks similar in appearance to those associated with earthquake damage in concrete or masonry shearwalls. It can also cause severe cracking of columns. A method of overcoming the deformation problem, through the use of prestressed concrete foundation ties, is described in this article.