Optimization Design Of Reinforced Concrete Frame Structure Under Seismic Effect

As one of the main structure form of the building structure, how to make frame structure as little input structure has higher safety degree and the ability to resist disasters, it is necessary and urgent that seeking scientific and reasonable design method.In this paper, a six-story reinforced concrete frame structure as an example, the structure is optimized under the horizontal seismic loads. Relevant parametric mathematical model has been established by using finite element analysis software ANSYS. In this mathematical model, column grid size^ beams and columns section size is design variables, the ratio of concrete volume and building area is the target, with satisfying the strength required, displacement restrictions and demands of reinforcement ratio of reinforced concrete frame structure, it is optimized, the optimal column grid size has been gave:Bay size is 7.8m, depth dimension is 6.3m, and the corridor width is 2,1m. And after optimization, column grid size, beam, column section size, the ratio of concrete volume and building area were compared. By comparison, after optimization the ratio of concrete volume and building area reduce 7.3% of the volume than before optimization.After the optimization results is obtained, the relation curves has been rendered that between concrete dosage, building area, the ratio of concrete volume and building area, structural displacement and different column grid size. It is concluded that variation of the frame structure parameters dimensional changing with the column grid.In this paper, the structure optimization design is complied with both Building Code of seismic Designing and Codes of Concrete Structures Design, so the analytic method applies to commonly various types of reinforced concrete frame structure and other structural type, has a certain Reference value for them. In particular, a reference basis is provided for column grid layout of the frame structure.