FLEXIBILITY FOHMJLAE OF ,JOINT BEHAVIOPR

and Design Centre "f-1ostostal Krucza This :paper -oroblem of stepped (unequal width) girders. First of modes elastic formulae being established. Then shown how those haracteristics can be extended into non-linear range of behaviour. Some comparison with test results is also given. Having known (calculated) joint flexibility one can take into account in the structural analysis by using so-called micro-bar model of a joint. last years a ll!'rge e!"mmt of research, stimulated co-ordinated mainly by and IIW, has been done in the domain of P?S joints (1]. Also in Poland, in Centre,