Seismic Performance Analysis Of Steel Plate Wall With Slits

The coupled steel plate shear wall structure is a new anti side structure in recent years.Compared with the traditional steel frame steel plate shear wall structure,plastic hinge is formed at the bottom of the structure to dissipate the seismic energy under the seismic action.First,plastic hinge is formed by the continuous yield of the coupling beam at the whole height of the structure to dissipate the seismic energy,and then the bottom of the wall limb to yield,which can form multiple seismic defense lines and improve the seismic performance and ductility of the structure.A new type of aseismic structure can be formed by slotting on the wall plate of steel plate shear wall.The existence of the slit breaks the tension band of the wall panel,reduces the wall panel effect on the frame column and effectively protects the frame column.When the thin columns between the joints formed by the cracks in the wallboard are stressed,plastic hinges can be formed to consume energy and improve the energy consumption capacity of the structure.Under the earthquake action,the thin columns and connecting beams between the joints will yield first,and then the bottom of the wall limb will yield finally,forming multiple seismic defense lines,which will protect the frame columns and the bottom of the wall to a greater extent,and improve the overall energy consumption and seismic performance of the structure.In conclusion,this kind of steel plate wall with joint joint is an excellent anti side structure with good economic benefits and seismic performance.In this paper,through the combination of theoretical analysis and numerical simulation,firstly,the range of joint parameters of jointed steel plate wall is determined,and then the prototype of jointed steel plate wall is established to analyze its seismic performance.Then,through the orthogonal design method,five parameters of jointed beam section size,coupling ratio,joint parameters,wall plate thickness and floor number are analyzed The main influence parameters are found.The main work is as follows:(1)The influences of the thickness of thin columns between joints,the ratio of width to thickness of thin columns between joints,the ratio of height to width of thin columns between joints,and the number of slit rows on the bearing capacity,stiffness and stability of jointed steel plate walls under monotonic push over are analyzed,and the recommended selection range of slit parameters is given.According to the formula,the influence of the parameters of the joint on the difference between the joint steel wall and the single joint steel wall is analyzed.(2)The aseismic performance analysis and variable parameter analysis are carried out for the steel plate wall with joint joints established within the recommended range of joint parameters.(3)The influence of cross-section size,coupling ratio,joint parameters,thickness of wall plate and number of floors on the hysteretic curve characteristics,skeleton curve,stiffness degradation,energy consumption capacity and failure process is examined through orthogonal design,and the main influencing parameters are found.The failure mode of steel plate wall with joint joint is summarized.