Development Of CAD System For High-efficiency Composite Prestressed Concrete Floor System Based On ObjectARX

The high-efficiency composited prestressed concrete floor system is a kind of structure type which utilize the high-strength steel bar and high-strength concrete to manufacture the prestressed member in the precasting plants, transport to the construction site and assembled with the cast-in-place concrete. This kind of structure type overcome the defects of cast-in place structure and precasting structure, has the easy to construction . shorten (abbreviate cut )the time > reduce the cost and enhance the quality of the building. It's a kind of ideal structure type which has enormous economy, the use extent become extensive.At present, the code for design of concrete structures has the design method for the superpose member, but if we use the handmade method to design the two-stage superpose structure. The workload is enormous for enhance the use extent of the superpose structure to strongpoint produce great benefit. It/s essential to realize the computer acid design of superpose floor.At one time the object-oriented programming develop method new take place the structural to become the main flow of the development of the programming ,. The AutoCAD provide the platform named ObjectARX which adopt the object-oriented programming method and support the MFC and utilize the strong develop tool. We induct the object -oriented programming to the development of structural CAD systerm and design a cad system based on graph.The CAD system developed by this paper is based on ObjectARX AutoCAD Visual C++ MFC and Windows98/NT/XP in order to existing condition that there is no CAD system of prestressed concrete superpose floor. This paper completes the following task:1 utilize the ObjectARX to develop the fore treatment which has the fuction to dispose the dote frame beam frame column superpose beam calculate the number the superpose slab and draw the construction document automatically. Get the data through the dialog box and transport to the calculation module produce the import and export database package2 Utilize the C++ develop the programme to calculate the internal force andthe area of the steel bar under construction loads and service loads.3 Transport the data created by the calculate module to the database of the AutoCAD, through the utilize the cad system to create draw the construction document automatically...