Study On Seismic Performance Of Prefabricated Partially Connected Arc-shaped Opening Anti-buckling Steel Plate Shear Wall

In order to reduce the additional bending moment caused by the tension band on the frame column on the basis of ensuring the shear resistance and seismic energy consumption performance of the steel plate shear wall,to reduce the section of the steel frame column,save the cost of materials,and add components practicality in engineering,this paper proposes arc-shaped anti-buckling steel plate shear wall.Its structure is as follows:the steel plate is connected to the surrounding frame by high-strength bolts only at the four corners.Each side of the steel plate is provided with an arc-shaped opening,and the two sides of the embedded steel plate are respectively provided with a prefabricated reinforced concrete slab anti-buckling device.Based on the prefabricated partly connected arc-shaped steel plate shear wall(PPASW),this paper mainly focuses on the static shear performance and seismic energy dissipation performance of the prefabricated partially connected arc-shaped opening anti-buckling steel plate shear wall(PPASW).Including specifically the following content:1.Research on the performance of steel plate shear wall with prefabricated partially connected arc-shaped openings(PPASW).Taking it as the research object,the force analysis of the whole process is carried out under monotonic loading and reciprocating loading,the force and out-displacement of the steel plate.Showing:ordinary thin steel plate shear wall will produce large out-of-plane deformation,and its biggest out-displacement usually arise at the diagonal angle of the steel plate(45~o with the frame column)and on both sides of the diagonal.The steel plate has gradually developed from the initial"in-plane shear mechanism"to the"tension belt bearing mechanism".The parameters affecting the energy dissipation and load-bearing performance of steel plate shear walls with partially connected arc-shaped openings are analyzed.The results show that when the arc-shaped opening height is within the limit value(310mm),the opening highness has less effect on its capability.While the thickness,length and highness of the steel plate have great effect on its kinds of capability.2.The static shear performance analysis of the prefabricated partially connected arc-shaped anti-buckling steel plate shear wall(PPAASW).On the basis of above research,put concrete slabs are installed on the steel plates’two sides to obtain partially connected arc-shaped anti-buckling steel plate shear walls(PPAASW).Showing the concrete slabs can validly reduce the out-displacement of the steel plate and enhance the shear bearing capacity.The structural parameters that affect the shear resistance of the prefabricated partially connected arc-shaped anti-buckling steel plate shear wall(PPAASW)are analyzed.Showing the thickness,length of the steel plate have a great impact on the shear resistance of the members.However,when the height of the arc opening of the steel plate is taken as the limit value,the shear capacity of the test piece is greatly affected only in the elastoplastic stress stage.Therefore,in actual engineering,in order to improve the safety reserve of the structure,the height of the arc-opening of the embedded steel plate should be less than its limit height.3.Research about hysteresis performance of prefabricated partially connected arc-shaped anti-buckling steel plate shear wall(PPAASW).Comparing steel plate stress and out-of-plane deformation process of the anti-buckling steel plate shear wall with open arc opening and non-open arc opening,the results show that not only the two energy consumption index curves are in good agreement,the area and area of the plastic deformation of the steel plate are also more consistent.Comparing the hysteretic performance,the stress and out-displacement between the two kinds of steel plate shear wall,it is found that concrete slabs can not only significantly increase the energy consumption and bearing capacity,but also can effectively reduce the out-displacement of the steel plate.Make the steel plate bear the horizontal load mainly in the way of overall force during the loading process.The structural parameters that affect the hysteretic performance of the prefabricated partially connected arc-shaped anti-buckling steel plate shear wall are explored.Showing the thickness,length and the number of bolts have an great effect on the energy consumption and bearing capacity.The thickness of the concrete slabs on both sides of the embedded steel plate has little effect on the bearing capacity of the component,but has a greater impact on the hysteretic performance of the component.When the thickness of the concrete slab is 30mm and 60mm,the shrinkage of the hysteretic curve of the component is still obvious.With the increase of the thickness of the concrete slab,when the concrete slab is100mm and 150mm,the fullness of the hysteresis curve of the component is higher,"shrinkage effect"almost disappears,so it is recommended that the thickness of the concrete slab should be greater than 100mm.