ABSTRACT
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.
