Programming approach to the object control of steel bar selecting for reinforced concrete member

By analyzing the influencing factors which causes the scattering result of steel bar selecting for reinforced concrete members, a controllable method of reinforced steel bar design is given. Controllable bar selecting is achieved, and the corresponding CAD program and related interface are introduced. The presented method is composed of three sections: The parameters and rules of multi objection control, the multi objection evaluating system for the influence result. The parameter of multi objection control is a revisable matrix which shows the influence by the bar diameter, bar type, the number of arrangement, neat space, selected practical area, etc. The rule of multi objection control has the function to express the various influences by the designing specification in different cases, which could be achieved by the process based method. For the objection appraising system, the appraising of the steel bar designs is achieved based on the controlling parameters and rules.