Experimental Study On Hysteretic Behavior Of Self-compaction Concrete Filled Circular Steel Tubular Lateral Loaded Compressive Members

Self-compacting Concrete(Self-Compacting Concrete,SCC for short),is refers to in the process of the construction of the casting without applying vibrating,only depend on the weight of Concrete can be fully populated to all corners of the template(or steel tube)of high performance Concrete and steel clearance,to improve the reinforcement and solve,thin wall and complex shape vibrating difficult construction conditions to bring great convenience.Add the self-compacting concrete in steel pipe can give full play to its advantages.In has been concluded that the test analysis,when the long column bearing,mechanical than artificial vibration molding of non-vibrating concrete of concrete filled steel tube long column strength about 30%,larger and elastic stiffness is larger by about 30%.For self-compacting concrete filled steel tube,if there is a little bleeding in the high altitude or span large component at the top of the layer formed considerable pulp,it is easy to make mix suspected soil uneven force,therefore,to control concrete secrete water.But if too much control of concrete secrete water,it will cause the self-compacting concrete is too thick,but sometimes too sticky mixture mixed into a lot of bubbles.So,starting from the control of proportion of self-compacting concrete in steel pipe,and then configure the larger stiffness and strength of self-compacting concrete is very necessary.In our country,with the development of concrete technology,self-compacting concrete in many concrete filled steel tube structure,building foundation and reinforced dense large complex structure got enough attention and application.Since 1993,China's research institutions pay more and more attention to the study of self-compacting concrete aspects.This article has carried on the self-compacting concrete filled steel tube with circular cross section,experimental study on seismic performance of concrete in the following several aspects of research:summarizes the characteristics of concrete filled steel tube,proposed this topic research the significance and content;To axial compression ratio,slenderness ratio as the parameters,the steel pipe filled with circular cross section eight experimental study on seismic behavior of self-compacting concrete,analyzes the bearing capacity of axial compression ratio and slenderness ratio on specimen,ductility,stiffness and energy dissipation,etc,and summed up the relevant laws.Finally,the full text work are summarized,and the next research work is prospected.