Time-dependent internal forces in uncracked structures: analysis by the displacement method - Concrete Structures: Stresses and Deformations - page 146

Time-dependent internal
forces in uncracked structures:
analysis by the displacement
method
Cast in situ segmental construction of 'Pont de la Fégire', near Lausanne, Switzerland.
5.1 Introduction
The force method is employed in Chapter 4 to calculate the time-dependent
forces in a statically indeterminate structure caused by shrinkage and creep of
concrete, relaxation of prestressed steel and movement of the supports. The
general displacement method of structural analysis can be used for the same
purpose. Computer programs for the elastic analysis of frames are now
widely used by engineers and they are usually based on the displacement
method. In Section 5.2, we shall review the general displacement method
and, in Section 5.3, indicate how a conventional computer program for
the analysis of an elastic framed structure can be used to determine the
time-dependent changes in internal forces.