Mitsubishi Heavy Industries, Ltd. (MHI) has developed a steel frame cross-section minimizing method for the structural design of a frame steel structure, which enables economic design through simultaneous minimization of the weights of multiple steel frame members. With this method, however, there are issues that the data input and output are not automated and the calculation takes a lot of time, only the constraint conditions for strength and deformation are considered in the calculation and the other conditions that should be considered in design are not taken into account. Therefore, the method has been applied to limited products. To solve these issues, we created a program that automatically delivered the input and output in each calculation process on the server and developed a system using a Web browser as the user interface. We also added a function of calculating the cross-section of a frame steel structure with consideration given to assimilability of members in addition to the constraint conditions for strength and deformation. This report describes the overview of the developed system and a verification example for application effects.
