Research On The Performance Of Frame Beam In Frame-swing Wall Structure

Reinforced concrete frame structure is prone to the phenomenon of interstory yield failure under earthquake action.The current seismic design requires "strong column and weak beam",which is often difficult to realize in engineering practice.Domestic and foreign scholars put forward frame-rocking wall structure system,which can coordinate the deformation of each floor of the frame and avoid forming deformation concentration.The floor yield failure is changed into the whole failure,and the frame beam connected with the rocking wall is regarded as the first seismic defense line,and its stress needs further study and analysis.Based on the research of frame-rocking wall and frame-shear wall structure,the stress analysis of frame beam connected with rocking wall and shear wall is emphasized in this paper.The seismic behavior of frame-rocking wall and frame-shear wall is compared with that of frame rocking wall and frame-shear wall by means of SAP2000 and ANSYS finite element software.A six-story structure is taken as an example and the Pushover analysis method is used to compare the seismic behavior of frame rocking wall and frame-shear wall.The interstory displacement angle and plastic hinge distribution on frame beam are obtained under different earthquake intensity.The stress distribution of frame beam at the same cross section and the position and range of plastic hinge on the beam are compared and analyzed by means of quasi-static analysis method.The results show that the force of frame beam in frame-rocking wall structure is more complex than that in frame-shear wall structure.Under the same seismic intensity,the number of plastic hinges on frame beam in frame-rocking wall structure is more than that in frame-shear wall.The stress concentration exists on the beam of the frame-swinging wall,and the stress in the plastic hinge changes greatly,and the distribution on the beam is discontinuous,showing a flake distribution,while in the frame-shear wall,the stress of the frame beam is uniform and continuous.The stress change in plastic hinge is small.It can be seen that the force of frame beam in frame-rocking wall is complicated,and some corresponding adjustments should be made.