Three Hinged Arch Bridge with Frame (SMT-MM-11)

availability: in stock

Investigation of 2 statically determinate three-hinged
Hinged arch with 3 hinges: 1 crown hinge, 2 abutment
hinges at the support points
3 arch segments: 2x long (together making a
symmetrical arch), 1x short (together with 1x long:
unsymmetrical arch)
Arch subjected to point load, distributed load (each
by loads) or moving load
Loads to compensate for the support reactions of an
abutment hinge
Storage system to house the components

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Bridges are often constructed as three-hinged arches. This type of construction is particularly
suitable when compression-proof building materials are available. Horizontal thrust occurs
in the arch at the supports. It permits much lower bending moments in the arch than in the
case of a beam on two supports with the same span. A significant longitudinal compressive
force is active in the arch to produce this effect. A three-hinged arch consists of a curved
beam mounted on two fixed supports, and usually featuring the so-called crown hinge at its
crown. The hinges on the two fixed supports absorb vertical and horizontal forces, and are
known as abutment hinges. Their connecting line is the springing line. The crown hinge
renders the system statically determinate.