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STURCTURES
BRIDGES
Term | Definition |
---|---|
ABUTMENTS | Supports at the end of an arch bridge that carry the load and keep the ends from spreading out |
SPANDRELS | vertical supports of an arch bridge used to distribute the weight of the roadway to the arch below |
ANCHORAGES | securing devices that are embedded in the solid pock or massive concrete blocks that spread cables over a large are to evenly distribute the load and prevent the cables from breaking free |
SPAN | the distances between two bridge supports |
COMPRESSION | a force that acts to compress or shorten the thing it is acting on |
TENSION | a force that acts to expand or lengthen the thing it is acting on |
BUCKLING | what happens when the force of compression overcomes an objects ability to handle compression |
SNAPPING | what happens when tension overcomes an objects ability to handle tension |
DISSIPATE | to spread force over a greater area so that no one spot has to bear the brunt of the concentrated force |
TRANSFER | to move force from an area of weakness to an area of strength |
TRUSS | supporting lattice work added to create very tall beams that add rigidity to an existing beam greatly increasing its ability to dissipate the compression and tension |
TORSION | a rotational or twisting force |
DECK STIFFENING TRUSSES | a supporting truss system beneath the bridge deck |
RESONANCE | a fatal force to a bridge that is a vibration caused by an extended force that is in harmony with the natural vibration of the original thing. Resonance vibrations through a bridge in waves |
DAMPENERS | a technique used to interrupt the resonant waves |