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Published byTracey Sparks Modified over 9 years ago
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Every bridge ever constructed had the same 4 stresses to overcome. Tensile Stress- Forces that try to stretch material and pull it apart. Compression- Forces that try to push or squeeze material together. Shear Stress- Forces that try to make materials tear and slide by each other. Torsion Stress- Forces that try to twist and bend material.
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Pier- A strong support that helps a bridge with stability. Caisson- A Tube used for bridge foundations when built over water. Bedrock- A strong foundation that support bridge piers. Keystone- A critical part of an arch bridge that keeps it together.
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Beam Bridges ◦ Girder- Box-girder or I girder laid between two piers. ◦ Cantilever- Built so that middle beam is supported by two outside beams. ◦ Truss- Uses a series of triangular shapes to distribute weight across the beam to piers.
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Arch Bridges ◦ Abutment- Where the bridge meets the land, keeps the arch from pushing out and down ◦ Aqueduct- A man-made channel that carries water built by the Romans to shield the water from sun and contaminations.
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Suspension Bridges ◦ Suspension Bridge- A bridge deck that is supported by cables hung from towers ◦ Cable Stayed Bridge- Single towers are used to suspend the road surface.
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