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c)

a)
b) d)

Figure 1.2

1.2.3 Modeling of support fixing

Real basic fixing of structural elements is pliable because of
material deformability. Their structural forms are quite varied. In
the course of strength of materials they are schematized, they are
believed to be composed of rigid elements connected by ideal
joints and reduced to four basic types.
Hinged movable support (fig. 1.3, a) allows the rotation of a
reference section and its moving parallel to the reference plane.
The reaction R intersects the hinge axis and is perpendicular to
the reference plane.

Figure 1.3

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