Study on Aseismic Behavior of Shear Wall with Frame Column in the Large Thermal Power Plant

Stiffness Degradation of Shear Wall with Frame Column and its Influence to Structural Performance

“…Let 3000 /    (  is inter -layer displacement angle), the relationship between inter-layer displacement angle and stiffness degradation coefficient under different stiffness ratio was shown in figure 4. As can be seen in figure 4 (1)With the increasing of stiffness ratio between frame column and shear wall, the stiffness degradation degree of shear wall decreases when reaching the same inter-layer displacement angle (2)The stiffness degradation curve of shear wall decreases rapidly when  is in the range of 1-3, and the stiffness degradation coefficient is obviously affected by the inter-layer displacement angle. The stiffness degradation curve is relatively gentle when  is in the range of 3-10.…”

“…As can be seen in figure 7 (1)When the stiffness ratio of frame column to shear wall is constant, the stiffness degradation coefficient of shear wall on the maximum displacement angle floor increases with the increasing of axial compression ratio in the limit range (2)The maximum displacement amplification coefficient and bottom shear amplification coefficient of the structure decrease with the increasing of stiffness degradation coefficient of shear wall.…”

“…(1)When the axial compression ratio of shear wall remains constant, the stiffness degradation coefficient of shear wall increases with the increasing of the stiffness ratio of frame column to shear wall (2)The maximum displacement magnification coefficient and bottom shear magnification coefficient decrease with the increasing of stiffness degradation coefficient of shear wall.…”

“…Due to space limitation, the stiffness degradation coefficients of the layer with the maximum inter-layer displacement angle, the maximum displacement magnification coefficient and the bottom shear magnification coefficient were listed in table 3 only when the stiffness ratio was 1.965 and the axial compression ratio was 0.32. From calculation data of 16 models, the relationship between the stiffness degradation coefficient and the maximum displacement magnification coefficient can be fitted into formulas (2), and the relationship between the stiffness degradation coefficient and the bottom shear magnification coefficient can be fitted into formulas (3).…”

“…Shear wall is generally divided into two types: shear wall with unframed column and shear wall with frame column. References [1] [2] show that the ductility, bearing capacity and stiffness degradation of shear wall with frame column are much better than the wall with unframed column. It is of great significance to study the performance of shear wall with frame column deeply.…”