Abstract: Traditional building information modeling (BIM) modeling method forcontrete continuous
girder main structure is inefficient, and the data stability is not guaranteed. To prevent the defects of
traditional modeling method, this paper develops a modeling tool for concrete continuous girder,
following the “skeleton-template” modeling idelogy. Taking user dialog window and excel table as
the delivery medium, by dint of geometry modeler, feature modeler, mechanical modeler, the
program’s interstructureis reasonably arranged through interface module, feature module and segment
topological module. Finally, segment feature instantiation and segment parts assembly is successfully
realized. It indicates that this modeling tool can highly improve the modeling efficiency and
guarantee the data stability. This paper also supply other BIM resrarches which is based on
Dassault/CAA secondary development with insparition and method.

Key words: building information modeling, Dassaultsystem, CAA, feature, continuous girder;
secondary development