Forces on a Suspension Bridge (SMT-MM-10)

availability: in stock

Specifications:
Investigation of a suspension bridge in various
load cases
Suspension bridge, consisting of 2 supporting
cables, roadway and 2 deflection pulleys as
pylons
Supporting cables with parabolic sag
Hangers (vertical supporting cables) in the form
of u-shaped shackles in graduated lengths
Roadway (distributed load) can be loaded by
additional weights

Technical specification

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Description

Suspension bridges are among the oldest of all bridge designs. Their main supporting
element is a flexible cable. Since cables are able to absorb high tensile forces while
themselves having little dead-weight, they enable wide-span suspension bridges to be
constructed. This makes it possible to bridge longer distances with no supporting pillars,
such as over wide gorges. The sag of suspension bridge supporting cables is parabolic in
shape, as the weights are attached at relatively short, constant intervals by way of vertical
cables to the main supporting cables.
The experimental setup SMT-MM-10 represents a suspension bridge. The bridge consists of
two parallel supporting cables with a roadway suspended between them. U-shaped hangers
serve as vertical cables. They are attached to the main supporting cables at regular
intervals, and hold the roadway. Deflection rollers act as pylons. The roadway acts upon the
supporting cables as a distributed load, and can be loaded by additional weights.
Two roadways with different stiffness are available: one stiff and one elastic roadway. The
stiff roadway has a hinge in the middle. The hinge permits internal moments in the roadway
occurring in response to uneven loading to be visualized – the roadway buckles