Analysis And Research On Rational Arrangement Of The Shear Wall In The Frame-shear Staggered Floor Structure

With the rapid development of high-rise buildings,the form of high-rise buildings are increasingly diversified and complicated.Due to the demand of buildings and the appearance,the structure tends to show irregular layout,resulting in various irregular structures,and the staggered floor structure is one of them.The staggered floor structure belongs to the type of vertical irregular structure;many parts of the stress component are formed in the place where the structural structure’s floor is staggered.The vertical anti-lateral force component near the staggered floor is complicated,and the floor of the fault layer structure is weakened sometimes.The horizontal displacement of staggered two-level floor can not be maintained at the same level and can not guarantee coordination force by the horizontal force,leading to the weak links in the force transfer of the path and structural stability will also be affected.In this paper,the rational arrangement of the shear wall mainly is be analyzed and studied in the frame-shear floor structure.Main contents are listed following:(1)Analysis of the characteristics of the staggered floor structure and the adverse effects of the structural staggered floor;(2)The structural model of three different positions of shear wall is established by finite element software SAP2000,and starting from the mode-superposition method,analyzing the reasonable method of the shear wall by the deformation and shear force are used to study the deformation and internal force of the three structural models;(3)analyzing the deformation and internal force of the staggered floor in the structure by increasing shear walls and discussing the influence of the position of the shear walls’ addition on the staggered floor structure;(4)Based on the dynamic time history analysis method,the floor displacement and shear force of each model are calculated by EL-Centro wave 、 Tangshan wave and Lanzhou wave,and the response spectrum analysis is compared with the mode-superposition method;(5)The rule structure is compared with the fault structure.Research indicates that in the staggered floor,the method of the side of the beam widened and so on can improve the connection between the floors,so that the staggered layer can be passed through the beam and the floor to improve the mechanical performance of staggered floor structure;different shear wall layout has different effects on the force of the staggered floor structure,the reasonable and uniform arrangement of the shear wall will increase the seismic performance of the whole structure,so that the frame and the shear wall work more synergy,reducing the floor displacement and shear force effectively;theshear walls layout vertically and horizontally to form the buttress to each other in the staggered floor structure,which can reduce the displacement and shear force of the layer to a certain extent,increase the integrity of the shear wall and increase the anti-stiffness effectively;the addition of the shear wall at the staggered floor can reduce the influence of the short column,prevent the shear failure of the short column,improve the shear capacity of the structure,and increase the overall performance and improve the stability of the whole structure;and the seismic behavior of the regular structure is better than that of the fault structure.