Performance Analysis,Experimental Research And Optimal Design Of Steel Shear Plate Damper

The coupling beam is an important component of the coupled shear wall.It can connect the wall member and reinforce the whole anti overturning ability of the shear wall,and can take the lead to yield energy dissipation and protect the wall limb safety during the earthquake action.In recent years,scholars have designed a wide variety of coupling dampers.But most forms of processing and manufacturing are complex.In view of this,this paper starts with the design of simple shear plate and metal coupling damper.First of all,four kinds of simple damper configurations are proposed and compared,namely,the upper and lower elliptical openings,the center ellipse opening,the single row opening and the double row opening.The seismic performance of the four dampers is compared by means of numerical simulation and loading test.Specific work has several aspects:(1)By numerical simulation of damper loading,the stress distributions of four kinds of open hole ratio dampers in each series are compared longitudinally.The ratio of opening ratio,yield shear force and energy dissipation capacity of each series damper is compared.Although the damage model is not introduced in the numerical model,it is of guiding significance for the selection of dampers.(2)Low cyclic loading tests of four kinds of shear plate coupling beam damper opening in different forms,the hysteretic behavior,strength degradation,stiffness degradation,ductility,energy dissipation and so on comparison of seismic performance of coupling beam damper plate shear.(3)Through hole form metal beam damper properties of four kinds of the same materials,analysis of hole size effect on energy consumption index,the corresponding rules,and consider the relationship between hole size and thickness,optimization design has better open hole in the form of coupling beam damper.In the construction of hole size parameters and the energy consumption index of the law,the introduction of Kriging surrogate model,and in the open hole parameter optimization design process as a platform to maximize the expected improvement criterion and SCE intelligent optimization algorithm are combined to improve the accuracy of the surrogate model and the overall optimization design efficiency.(4)For the quantitative analysis of the energy distribution of the damper,and grasp the relationship between thermal energy,thermal dissipation and plastic damage energy in the loading test,the infrared thermography method is introduced.With the aid of the energy conservation relation,the temperature variation law of the damper under cyclic loading is recorded in real-time with an infrared thermal imager,and the energy ratio is evaluated.(5)Obtained by fitting experimental data,perforated rectangular steel shear panel damper parameters determined by formula,extended from the design method of damper,and selects a typical reinforced concrete coupled shear wall structure,damper design method based on the dynamic elastic-plastic time history response analysis of the structure,the difference between before and after the installation of dampers in the structure displacement,story drift,base shear and seismic failure mode,and evaluate the damper design theory,applicability of beam truncated holes in the high-level structure of the damper.