The Structure Static Elastoplasticity Analysis(Push-over) Law

Performance-based seismic design is the future direction of development of seismic design, structural static analysis push-over method is widely used at home and abroad in recent years, a seismic analysis, is whether the performance-based seismic design of the project in one of the key factors to achieve success, have been recognized. However, with the application of the promotion, push-over analysis of the defects and deficiencies have been exposed, so this paper, the improved push-over analysis of a15-storey reinforced concrete frame structure calculation of static elastic-plastic model analysis, and with the dynamic time-history analysis results were compared to verify the reliability and applicability of the method.Based on the analysis of the structure Pushover method development and research at home and abroad and focused on the application status after the push-over analysis of the basic principles and then by comparing several different methods of analysis of push-over push-out over France, the main problems to address these issues, this paper analyzes the current commonly used types of lateral force loading mode, leads to the adaptive form of lateral load distribution can be improved Pushover analysis results of push-over, then by a typical5-story frame structure, for example verified by Chopra et al proposed the method of MPA and its lack of rationality, and the introduction of the improved MPA method has been improved. Finally, the paper through the SAP2000finite element analysis software, the application has been improved static analysis method, a15-storey reinforced concrete frame structure calculation model for the static analysis and dynamic time-history analysis and the results were compared to verify the Benwensuoyin the reliability and applicability of the method. The results show that this application has been introduced to improve static analysis method for pushover analysis of the structure to more accurately simulate the seismic response, with easy operation and high precision calculations.