Statics Case Study
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STATICS Case StudyEQUILIBRIUM OF A BASCULE DRAWBRIDGE
ByChristian Batol
Jian LastinoDe La Salle University- Manila
April 4, 2013
Introduction:
A bridge is a structure that is built to allow passage across obstacles such as bodies of water, valleys or roads. It is usually made of concrete and steel so that it can support heavy loads such as cargo trucks, busses, and utility vehicles. Although there are various types of bridges, this study will be discussing about bascule bridges.
A bascule bridge is movable type of bridges that have “leaves” which are basically parts of the bridge that opens in order provide passageway to boats. Figure 1shows an example of a bascule bridge with two leaves.
Figure 1 A Two-leaf Bascule Bridge
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In order for the leaves to be lifted, a counterweight is used
A Bascule bridge can be analyzed in a way such that it is a force system in equilibrium, when it has already been opened, the hinge supporting should
require a force to keep it open and immobile as possible,