Shear Resistance And Hysteretic Behavior Of Steel Plate Shear Walls Connected To Frame Joints With Half-opening

The four-sides-connetcted shear wall has good seismic performance,and it will form a tensile zone along the diagonal direction of the steel pla te under seismic load,which provides higher shear bearing capacity.But the requirement of flexural rigidity of columns is also high,which may cause the buckling of column before the ruins of steel walls when the column is of insufficent stiffness.In addition,the steel plate shear wall in the actual application will inevitably have to face the problem of layout circuit pipeline,so the whole section of steel plate shear wall is not practical.In order to ensure the steel wall shear bearing capacity and hysteretic performance to reducing the additional bending moment caused by the tension side column effect,thereby reducing the requirements of flexural stiffness of the columns,reduce the weight of the structure,save the cost of material,and increase the practicability of steel plate shear wall.punching-four-corners-connected steel plate wall(PFCSPW)is put forward by the team of Fu Xueyi.The PFCSPW is connected to the frame only by four corners,the length of the connection is 1/4 of the length of the steel plate,and 1/2 of the middle part of the steel plate is provided with an arc punching.The main research works and conclusions of this paper include following four parts.The limit formula of the puching height of PFCSPW was deduced,which gives the limit requirements under different span-height radios;the static stress and deformation of PFCSPW under the shear load was studied,and the formula of shear bearing capacity was deduced,which was verified by finite element analysis method,the results show that the theoretical formula derived in this paper could accurately calculate the shear capacity of the structure;The parameters of PFCSPW were analyzed,and discussed static performance under the different ratios of height to thickness and shear span ratios,the results show that low height-to-thickness ratio and hight span to height ratio are good for improve the shear capacity of the structure;the comparative analysis of the shear performance between the punching and non-punching FCSPW,which showed that the punch of the steel plate didn't weaken the capacity of the FCSPW;based on the thought of equal deflection of side columns between FCSPW and PFCSPW,the formula of PFCSPW is derived and verified by finite element method.The stress and deformation of PFCSPW under the cyclic load is studied;The hysteretic behavior of PFCSPW was analysed,and the hysteretic performent of punching and nonpunching FCSPW was disscused,which shows that the influence of punching in steel plate could be ingored;the hysteretic performance of PFCSPW under different parameters were analyzed,included different span thickness ratio and height to span radios.The results show that low height-to-thickness ratio and hight span to height ratio are good for improve the hysteretic performent of the structureThe static performance of stiffening PFCSPW was disscused under different stiffeners and stiffening rib section,the results showed that the T shaped rib section and diagonal stiffeners could effectively improve the static shear performance;The limit of stiffness of stiffening PFCSW was discussed,which shows that it's good for improve the shear capacity of the structure when the ratio of stiffness is equal to 200;The shear bearing capacity formulas of stiffened PFCSPW was deduced and verified by finite element method,the results showed that the theoretical formula derived in this paper could accurately calculate the shear capacity of the structure;The static performance under of stiffening PFCSPW unde different ratios of height to thickness and span to height ratios were analyzed,the results show that low height t thickness ratio and hight span to height ratio and raito to stiffeness are good for improve the shear capacity of the structure.The hysteretic behavior of stiffening PFCSPW was analysed,included the stress and deformation under the cyclic load;The stiffness degradation of stiffening PFCSPW was discussed,which shows that the stiffeness radio of stiffener was helpful to deal with the problem of stiffenss degradation;the of stiffening PFCSPW under different parameters were analyzed,included different span thickness ratio and height to span radios,the results show that low height t thickness ratio,hight span to height ratio are good for improve the hysteretic performance of the structure.