| With the development of the national economy, the structure has widely applied in the Civil Engineering. And the pratal rigid frame can be more and more important and applied, because of its fast construction, economizing on energy and environmental protection, the overall excellent technical and economic indexes, beautiful 100king ang good anti_seismic advantages. However, there are only a few steel structuresdesigning software in accordance with Chinese code for structural designing in our country now. Specially, there is few steel structure designing CAD software about portal lattice rigid frames. So the author takes part in developing a portal lattice rigid frame designing CAD software and takes charge of developmenting the module of designing joint.The module is finished under the advanced flat Visual C++6. 0, which is applicable to Windows 9X/Windows NT/Windows2000. In the developing the author uses the advanced computer technology including C/C++ Windows Programming, Microsoft Foundation Classes, transferring data with Mapping files in memory and thread, operating visibility, and developing drawing system with ObjectARX technology.The module consists of three parts: preprocess, calculating kernel and post-processing. The data used by calculation program and post-processing are formed by dialog boxes. The program can check the validity of the data. The calculating kernel uses the OOP programming technology and encapsulates some functions by Class. The post-processing part is designed to plot construction drawingsBy performing the designing of an actual project with the CAD software developed by author, it is shown that the software can be in favor of improving the efficiency and meet the demand of engineering. |
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