| Summary: | 碩士 === 國立臺灣科技大學 === 營建工程系 === 96 === In recent years, three-dimensional visualization technologies have been
researched and applied for aiding the operations of design, planning, construction, etc.
in construction engineering. Examples of such applications include Building
Information Modeling (BIM), 4D CAD, and integration of design and analysis
systems. A three-dimensional CAD model of a targeted facility or construction project
is a requirement. Due to the uniqueness and custom features of A/E/C
(Architecture/Engineering/Construction) products, their 3D CAD models usually have
to be built by instancing and assembling basic geometric modeling elements from
scratch. Generally, this is a time-consuming and labor-intensive process. In addition,
the reusability of built 3D CAD models is low.
For improving efficiency in building 3D CAD models and reusability of built 3D
CAD models, this research proposes a component-based approach for generation of
3D CAD models using a construction component model database. A construction
component model database is developed to store and provide 3D models of
construction components, such as materials and equipments, to be queried and
retrieved for generating global 3D CAD models in construction engineering. A
management interface of the database is developed for inserting and editing
construction component models. A model building interface which utilizes the
database for generating global 3D CAD models based on search, selection, and then
setting operation is also developed. The data format of 3D component models in the
database is X3D for interoperability. Base on the proposed approach, 3D CAD models
can be built more efficiently since it is not began from scratch but using existing
components in the database. In addition, built models can be decomposed into
component models to be stored in the database for being reused.
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