| Summary: | 碩士 === 淡江大學 === 土木工程學系 === 87 === A variety of computer technologies has been applied to the field of civil engineering today. Visualization of structural design results focuses on the geometry, graphics and simulation, ranging from static 2D images to dynamic 3D graphics. In recent years, progresses in multimedia, virtual reality and Internet have given visual aids for structural design new prospects. This research focused on how to utility VRML technology to convert the design results of an existing knowledge-based structural design system to virtual scenes. Designers can see the structure in virtual reality, navigate freely and search for the information they need. This allows designers to literally see the design outcomes that are usually difficult to read and visualize.
Based on the original earthquake-resistant building design system, a VRML interface was developed to enhance the original 2D graphic user interface. The main tasks of employing VRML to improve design visualization include: adding more geometric data into the original steel shape database, setting up a VRML object database and coding a VRML constructor in the original system. The VRML constructor is responsible for combining the design information in the objects of the structural elements in the knowledge base with the data in the two databases mentioned above to produce the VRML code for a design. After the VRML code is generated, a web browser can be started to view the virtual scene. Through the VRML browser, the complete building structure is visible. Structural elements and their relations can be viewed in concrete images. The strong point of this program is that the virtual environment is interactive. Detailed design results can be queried by clicking on the structural elements.
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