Analysis And Research On The Influence Of The Opening Of The Beam Transfer Floor On Its Mechanical Performance

Among the frame-supported shear wall structures,the most widely used beam-type transfer layer structure is currently favored by engineering practice due to its direct force transmission and convenient construction.In order to meet the basic ventilation and lighting functions of the building,holes must be opened in the upper shear wall.At the same time,because the section height of the transfer beam in the frame-supported shear wall structure is relatively large,it is necessary to make a hole in the transfer beam if it is to satisfy the installation of equipment pipes in the transfer layer.In this paper,the ABAQUS finite element analysis software is used to numerically simulate the frame-supported shear wall structure,and the mechanical performance and seismic performance of the frame-supported shear wall structure under different opening conditions are analyzed and discussed.In this paper,firstly,the frame-supported shear wall structure with one-to-one-span three-story shear wall full-span without openings,the frame-supported shear wall structure with openings in the shear wall,and the frame-supported shear wall with simultaneous openings in the shear wall and the transfer beam The shear wall structure is subjected to the force analysis under the combined action of vertical load and monotonic horizontal displacement,and then the pseudo-static force of the frame-supported shear wall structure under the opening of the shear wall under different widths and different heights of the opening is carried out separately Analysis,and finally a pseudo-static analysis of the frame-supported shear wall structure under the change of the opening position and the number of openings on the transfer beam.The specific analysis results show that: opening a hole in the shear wall of the frame-supported shear wall structure will destroy the common working mechanism of the structure,reduce the load-bearing capacity of the structure,but can greatly improve the ductility of the frame-supported shear wall structure.Opening a hole in the transfer beam will also reduce the bearing capacity of the structure,but compared to the frame-supported shear wall structure when only the shear wall is opened,its ductility becomes better.With the continuous increase of the width and height of the shear wall opening,the frame-supported shear wall structure has a continuous decrease in its bearing capacity,a decrease in rigidity and an increase in ductility.When the position of the opening of the conversion beam in the frame-supported shear wall structure is changed to make the opening from the middle of the span to the end of the beam,the load-bearing capacity of the structure is enhanced,and the ductility becomes weaker.When the number of openings in the transfer beam gradually increases,the load-bearing capacity of the structure gradually decreases and the ductility gradually increases.At this time,in the structural design,try to ensure that the opening of the conversion beam and the opening of the shear wall are in line,and try to avoid arranging the opening at the end of the conversion beam,and try to make it symmetrical when arranging multiple openings.The work done in this article aims to provide some references for future research and actual design.