1. Floor plan
All vertical loads and horizontal forces in the shear wall structure are borne by the reinforced concrete wall, so the shear wall should be arranged along the main axis of the plane.
1) In rectangular, L-shaped, and T-shaped planes, the shear walls are arranged along two orthogonal main axis directions;
2) Triangular and Y-shaped planes can be arranged in three directions;
3) Regular polygonal, circular and arc-shaped planes can be arranged along the radial and circumferential directions.
The length of the single-piece shear wall should not be too large:
1) A shear wall with a large length and a large rigidity will make the period of the structure too short, and the seismic force is too large and uneconomical;
2) The shear wall can have sufficient ductility only when it is under bending. Therefore, the shear wall should be tall and thin. If the shear wall is too long, a low-width shear wall will be formed. Damaged, the shear wall is brittle, which is not conducive to earthquake resistance. Therefore, when the continuous shear wall on the same axis is too long, the floor slab or small connecting beam should be divided into several wall sections, and the aspect ratio of each wall section should not be less than 2. Each wall segment can be a monolithic wall, a small opening wall or a joint wall. The width of each wall leg should not be greater than 8.0m, to ensure that the wall leg is controlled by the bending bearing capacity and give full play to the role of the vertical distribution ribs. When calculating the internal force, the slab or weak connecting beam between the wall sections does not consider its effect, and each wall section is calculated as an independent shear wall.