The analysis of statically indeterminate
structures, using the force and displacement methods, are
considered as exact, as in such an analysis, the conformity
and equilibrium conditions of the structure are satisfied
exactly. However, the results of such a particular analysis
represent the particular structural response only to the
purpose up to which the model of the structure represents
the particular structure. These methods are often reliably
used, given as accurate as possible analytical model of the
structure is employed within the analysis. But due to the
difficulties related to exact analysis like time consuming
computations of deflections and finding solutions of
multiple equations, further complicated by the relative
sizes of the members of the structure, the preliminary
designs of indeterminate structures are often supported by
the results of approximate analysis. Approximate analysis
becomes very convenient to use within the planning phase
of projects, when various alternative designs of the
structure are considered and compared with reference to
economic aspects. This text aims to match the results from
the 2 methods obtained with numerical analysis on a frame
structure. The approximate methods are expected to yield
results within 25% of the precise solutions.
A STUDY ON THE APPROXIMATE METHODS VS EXACT METHODS OF STRUCTURAL ANALYSIS
