Unbonded Prestressed Concrete Floor In The Development Of Cad Systems

In this paper, a Computer Aided Design (CAD) program for designing the unbondedly pre-stress concrete floorslab has been developed. The program has finished the total process from data aquistion to constructional drawing plotting. In addition,a program interface has been left for the further development.The system is developed by Visual C++6.0, under Windows 2000 platform. The latest techniques has been used in this system, such as C\C++ programming, Object ARX, MFC class.The unbondedly pre-stress concrete floorslab CAD system consists of preprocess, caculation core, postprocess. Data aquisition is achieved by preprocess; caculation core is responsible for internal force analysis, estimation of area of prestress steel bars, bearing capacity calculation, deflection calculation, die cutting calculation. In addition, some diagrams of the intermidiate result has been shown during the calculating process. The postprocess is responsible for the constructional drawing plotting.