The frame shear wall structure is a structure formed by combining the two structures of the frame and the shear wall with different stress performance and deformation characteristics.
The lateral stiffness of the frame structure is not large. Under horizontal load, it generally exhibits shear-type deformation, and the inter-floor displacement of the floors above the middle is large; the reasonably designed frame structure has good ductility and is good for earthquake resistance.
The shear wall structure has large lateral stiffness and high seismic resistance. Under horizontal load, it generally exhibits flexural deformation, and the inter-story displacement of the floors near the top is large. The shear wall structure of the seismic design also has good seismic performance.
The frame shear wall structure can give full play to the advantages of both the frame and the shear wall and restrict each other's shortcomings when the structural arrangement is reasonable. The frame shear wall structure has a larger overall lateral stiffness, and the lateral deformation is between the shear deformation and the bending deformation. In addition, in the seismic design, the two structural forms can form two seismic lines of defense, so they are used in various In multi-functional high-rise buildings (whether in seismic or non-seismic areas), they are widely used.
The frame shear wall structure is composed of two structures, frame and shear wall, and its composition forms are diverse and variable, which should be determined according to the layout of the building and the mechanical requirements of the structure.
The composition of the frame shear wall structure can generally adopt the following forms:
1) The frame and the shear wall (including single-piece wall, joint wall and shear wall tube) are arranged separately, and each form a relatively independent anti-side force structure.
2) The shear wall is embedded in several spans of the frame (the columns and beams of the corresponding span of the frame become the border of the wall, called the shear wall with border).
3) Frames and shear walls are continuously arranged in a single piece of anti-lateral force structure.
4) A mixed form of the above two or three forms,
The combination form of frame shear wall structure should be determined according to the actual situation of the project. However, no matter which form it takes, it bears the load and action with its overall structure. The forces borne by each part should be determined by the overall analysis of the structure (including simplified methods). Colleagues should also calculate the overall structure Analysis and comparison of results to adjust the number of shear walls in the structure.
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