Analysis On High-performance Concrete Filled Steel Tubular Column Subjected To Cyclic Loading

Self compacting concrete(Self-Compacting Concrete,referred SCC),refers under its own gravity,can flow,density,even in the presence of dense reinforcement can be completely filled with templates,and access to good homogeneity,and does not require additional vibration concrete.The composition of self-compacting concrete self-compacting concrete pipe quality materials added to this steel are more able to play to their strengths.A large number of experiments and theoretical analysis have been conducted showed that,for a long column,the intensity of steel concrete long columns shaped by artificial vibrators was weaker than the mechanical vibration about 30%,while its elastic stiffness was also much smaller.Bleeding is a very critical parameter of self-compacting concrete pipe,firstly if there is little concrete pipe bleeding,a large number of slurry layer will be formed at the top of the height of the larger or large span member,and the layer will make concrete occurrence of stress,thereby reducing component strength;on the contrary,if the control of bleeding was too strict,it will reduce its liquidity,and thus can not achieve the self-compacting effect.Therefore,in order to prepare a high quality self-compacting concrete,the parameter of Bleeding is necessary to control the proportion of Self-compacting concrete.A lot of research on the static performance test and its theoretical analysis of steel self-compacting concrete,have been done by many experts and scholars at home and abroad.But the basic research on the theoretical of the seismic aspects is also unusual,this paper was to analysis and calculate the self-compacting concrete filled steel's hysteretic behavior by through finite element analysis software ABAQUS model,thus enabling a more comprehensive understanding and analysis of its hysteresis properties,and providing a reference to the theoretical analysis and seismic design of steel compacting concrete.Specific results of the work are as follows:This paper described the steel concrete and the characteristics of steel concrete self-compacting,briefly overviewed the history development and research status steel self compacting concrete,and explained the purpose,content and research methods of the research.About 16 self-compacting concrete filled steel tube test was described,including eight circular section specimens and 8 square cut test pieces,and a brief comprehensive introduction was conducted to their test cycle back and forth at low loads.Brief description and determine the use of finite element software ABAQUS finite element software as the calculation and analysis tool of this paper,described basic preparation conditions and procedures of the use of ABAQUS modeling,completing modeling.The comparison of simulation results with the experimental results of the model analysis was conducted to determine the feasibility of the modelUnder the premise of the reliable establishment of the finite element model,analysis of key parameters of a steel self-compacting concrete bending members,analysis of the whole force process,analysis of interaction between core concrete and steel,etc,were conducted.Analysis of the parameters of the concrete strength,yield limit axial compression ratio and steel(fy),etc,were also conducted.A comprehensive consideration of the various parameters of the span load(P)-Effect of midspan deflection(?)skeleton curve was made.According to the data of the operational test and simulation data,the restoring force model was summed by analysis of the software extract spss.Finally,a brief summary of the full text and a prospect analysis of the main direction of further research was made.