Research On Seismic Performance Of SRC Frame RC Wall Panel Based On Energy Distribution And Dissipation

In order to achieve the restorable function after earthquake,reasonable primary and secondary energy dissipation components are set up,dampers with strong energy dissipation capacity and low yield point are designed,and the yield mechanism and damage process of the structure are controlled purposefully,so that the structure can form an effective multi-channel seismic defense line,control the damage of the main components,realize the optimal seismic failure mode of the structure,and ensure that it can be faster and more efficient after earthquake Replace damaged components.It is considered that the damage controllable and restorable functions under earthquake are realized from three levels: material,component and structure.The material level includes the R &D and application of high damping concrete(HDC),which improves the performance of concrete pore structure and interface transition layer by adding polymer,and improves the damping energy consumption capacity of materials under earthquake.The component level includes replaceable RC wall panel and buckling damper,which make full use of the lateral strength and rigidity of RC wall panel and the buckling energy dissipation of buckling damper.Finally,a kind of replaceable structure system is formed,which is composed of SRC frame as the main component,RC wall panel as the secondary component,and connected by energy dissipation mechanism such as buckling damper and high damping material.In this paper,a new hybrid structure system of Steel Reinforced Concrete(SRC)frame-reinforced Concrete(RC)wallboard is proposed to realize the recovery function of structures after earthquake by means of replaceable components and the concept of structural control.In this paper,a new type of steel reinforced concrete(SRC)frame reinforced concrete(RC)wall panel hybrid structure system is proposed,which aims at the high earthquake area and realizes the restorable function of the structure after earthquake by means of replaceable components and adding the concept of structural control.(1)Steel reinforced concrete columns and steel beams are the main structural components,RC wallboard is the secondary components,and it is designed as the three functional components of structural stress,post earthquake capacity consumption and enclosure filling.The yield mechanism and failure mode of the targeted guiding structure can ensure the structural bearing capacity and ductility of SRC frame,the reasonable rigidity ratio between the frame and the wall panel,and ensure the SRC frame to maintain the elastic state after rare earthquake action,to meet the seismic code requirements,dissipate the seismic energy,and the structure will not be damaged.The seismic energy is mainly through the buckling damper and the plastic change of RC wall panel After the earthquake,the function of the structure can be restored by replacing the buckling damper and RC panel.(2)Based on the elasto-plastic analysis theory of perform3 d,the nonlinear finite element models of three 9-story SRC frame RC wallboard structures(model 1-3)are established respectively,and the modeling process is introduced in detail from defining nodes,materials,elements and other processes;through modal analysis,the T1,T2 of PKPM and Perform-3D models are compared,The model period of T3 is less than 3%,which proves that the simplified model of the elastic stage of the structure established by Perform-3D is correct,which provides a reference for the elastic-plastic analysis of SRC frame RC wall panel structure.(3)The dynamic elastoplastic analysis of three SRC frame RC wall panel structure(model 1-3)models is carried out by selecting seven groups of seismic waves,and all kinds of seismic responses are comprehensively analyzed.The results show that the model 3 hybrid structure can significantly reduce the seismic dynamic response and plastic energy consumption of the structure,considering the displacement of the top of the structure,the displacement angle between the layers,the shear force between the layers and the plastic energy consumption of the structure.The existence of RC wallboard and buckling damper can improve the nonlinear plastic energy consumption of the structure,which can be used as the first line of defense for multiple seismic fortification of the structure,and achieve the goal of multiple seismic energy consumption.(4)Based on the energy aseismic design method,the energy design calculation flow of SRC frame RC wall panel structure is proposed.Considering the influence of structural characteristic damping ratio and ductility ratio μ on energy consumption of hybrid structure,the influence law of damping ratio and ductility ratio on input energy,damping energy,hysteretic energy consumption and energy consumption ratio of hybrid structure is analyzed.The main factors affecting energy consumption distribution of SRC frame RC wall panel structure are considered Parameters,the vertical distribution of seismic hysteretic energy dissipation along the structure and the internal distribution of each component are studied,and the structure height h is determined With the characteristic value of stiffness,the correlation between the damage mode of the hybrid structure under the action of large earthquake,the seismic performance and the controllability of the energy consumption distribution law is analyzed.Through the parameter analysis,the structure realizes the "controllable" energy consumption distribution under the action of large earthquake,has good energy consumption mechanism and excellent seismic performance,and realizes the fortification goal of multiple seismic systems.