Abstract: The XML-based structure general format had been built in the early stage to carry out basic
model data conversion among several different structural models such as SGF, SAP2000, ETABS and
IFC. However the conversion of complex eccentrically components was not achieved in most existing
platforms which caused negative influence to the results of structural analysis. This research analyzed
the eccentric data structures from different structure software applications, and summarized the data
expression of eccentric structural members. Moreover, the mapping relationship between SGF and
eccentric data was established, and then an eccentric structure analytical model conversion algorithm
was proposed to implement the transformation of eccentric components of structure models. Finally the
algorithm was validated through a case of model conversion for a typical framework with eccentric
members.

Key words: structural analysis model, data conversion, eccentric member, structure general format