The Research Of The Optimization And Seismic Performance Of Steel Frame Structure Based On High Strength

Compared with the traditional residential structure,steel structure residence will be promoted,because of its unique advantages.In order to get the better steel structure housing development,We have had a more comprehensive understanding on the performance of the steel structure housing in the process of steel structure residential promotion.The development of steel structure residence has huge potential,and some problems at the same time.The appearance of high strength steel provides a new vitality for the development of steel structure.High strength structural steel has high strength,good ductility and toughness and processability.For larger force component,high strength steel can decrease the component section,reduce the weight of component.High strength steel has significant advantages in the structure stress performance,construction use function and social economic and environmental benefits,etc.And it can improve the safety and reliability of steel structure in the further.As the main form of civil structure,Multi-layer and high-rise steel structure steel structure have many problems to be solved,such as large steel usage and the high cost.The research of high strength framework is an important direction.The application of high strength steel Q460 in Multi-storey and High-rise steel frame structures is studied.Based on seismic Design,establish the optimization project and optimize the design.Compare the seismic performance and economic performance of the structure before and after optimization.Establish a frame structure of 6 layers and a frame supporting structure of 15 layers.Determine the components of the intensity of control and optimize the frame structure,based on the seismic theory.Adjust the component section,calculate the strength and stiffness to meet the requirement of criterion reasonably.Optimize beams and columns in the frame structure of 6 layers and the frame supporting structure of 15 layers.Mode analysis,response spectrum analysis.Pushover analysis and Time-history analysis are carried out.Analyze and compare the vibration period,the story drift and the base shear in elastic stage and elastic-plastic stage.Compare Vertex displacement and base shear curve and several key points data before and after optimization.Analyze the performance of the plastic hinge and determine the failure mechanism of the structure by Pushover analysis.By time-history analysis,analyze the response of the structure under seismic waves and the performance of the plastic hinge.Summarize the comprehensive economic performance and seismic performance of the structure before and after the optimization.Analysis the feasibility of the application of high strength steel Q460 in the multi-storey and high-rise steel frame structures.Provide some suggestions for the application of high strength steel Q460 in the multi-storey and high-rise steel frame structures.