Module "Horizontal load distribution on shear walls"

The input is divided into:

• input of the position and quantity of acting horizontal forces
• input of the floor polygon
• input of the shear walls
• calculation options

The quantity of horizontal forces can be specified by entering H_x and H_y in [kN]. The position of the forces can be either user-defined (H_x along the line of action in y_Hx and H_y along the line of action in x_Hy) or specified at the center of mass. By selecting "at center of mass", the position of the forces will be determined from the polygon of floor.

The floor is defined by entering the coordinates of the corner points. The sequence of the points must be counterclockwise and there must be no openings. The origin of the draft is shown on the upper-right corner of the window.

• By clicking , a new corner point is created.
• By clicking , the selected point will be deleted.
• By clicking , the selected point can be moved up in the sequence.
• By clicking , the selected point can be moved down in the sequence.

The walls can be defined using the following table. The selection of the cross-section, and thereby of the producer, is in the current calculation neglected since the stiffnesses are calculated in proportion to the wall length. The position of the wall can be defined either by specifying the reference point (in the draft above, the point is set in the lower left corner at the φ = 0°; x_ref and y_ref) or by entering the center of mass (x_C and y_C), as well as the angle of rotation φ.

• By clicking , a new wall can be created.
• By clicking , the selected wall will be deleted.

In the current version, the stiffness of the wall systems c is calculated proportional to the wall length (c ∼ ℓ ^exp). The exponent exp can be specified here.

The output is given separately for the acting forces H_x and H_y and the combination H_x + H_y. The output comprises the moment, resulting from the load eccentricity, as well as the forces acting on each wall defined with their components x and y (F_x and F_y) and also the resulting force F at the angle α_F. As a control, the sum of the forces in x and y direction, as well as the sum of the moments are verified as well.

A graphic representation of the results is also divided into H_x, H_y and H_x + H_y and can be seen in the lower right corner of the window.

Modeling as rigid floor plate and walls as extensional springs