Forces on Bridges How are bridges designed to withstand the forces that act on them?

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Forces on Bridges Forces on Bridges How are bridges designed How are bridges designed to withstand the forces to withstand the forces that act on them? that act on them?

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Transcript of Forces on Bridges How are bridges designed to withstand the forces that act on them?

Page 1: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Forces on BridgesForces on BridgesHow are bridges designed to How are bridges designed to

withstand the forces that act on withstand the forces that act on them?them?

Page 2: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Classifying BridgesClassifying Bridges

Function on bridge: to carry a load across Function on bridge: to carry a load across a distancea distance

All loads have a downward force (due to All loads have a downward force (due to gravity)gravity)

Bridges classified by how they carry the Bridges classified by how they carry the weight:weight: CompressionCompression TensionTension Tension/ CompressionTension/ Compression

Page 3: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Compression BridgesCompression Bridges

CompressionCompression ““push” forcepush” force causes objects to get shortercauses objects to get shorter Stone and concrete are strong in compressionStone and concrete are strong in compression

Page 4: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Compression bridges: ArchCompression bridges: Arch

Page 5: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Compression bridge: ArchCompression bridge: Arch

Page 6: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Tension bridgesTension bridges

TensionTension ““pull” forcepull” force Causes an object to get longerCauses an object to get longer Wire rope and changes are strong in tensionWire rope and changes are strong in tension

Page 7: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Tension bridge: SuspensionTension bridge: Suspension

Page 8: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Tension bridge: SuspensionTension bridge: Suspension

Page 9: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Tension/ Compression BridgeTension/ Compression Bridge

A beam bends under the weight of a loadA beam bends under the weight of a load When the beam bends, the top half is in When the beam bends, the top half is in

compression and the bottom half is in compression and the bottom half is in compressioncompression

The taller the beam, the stronger it isThe taller the beam, the stronger it is

Page 10: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Tension/ Compression Bridge: Tension/ Compression Bridge: BeamBeam

Page 11: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Tension/ Compression Bridge: Tension/ Compression Bridge: BeamBeam

Page 12: Forces on Bridges How are bridges designed to withstand the forces that act on them?

Tension/ Compression: TrussTension/ Compression: Truss

Problem: as a beam gets taller, it becomes Problem: as a beam gets taller, it becomes costly and too heavycostly and too heavy

Solution: build a trussSolution: build a truss Trusses composed of trianglesTrusses composed of triangles


Physics of Bridges Mr. Hoa STEM 2014. Beam Bridge One of the simplest bridges What are the forces acting on a beam bridge? There is the weight of the.

Physics of Bridges Mr. Hoa STEM 2014. Beam Bridge One of the simplest bridges What are the forces acting on a beam bridge? There is the weight of the.

Lectures: 2 DENTAL MATERIALS Dr: Aseel Mohammed · Web viewRestorative materials must withstand forces either during fabrication or mastication. STRESS is the force per unit area

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Geotechnical Engineering: Earth Retaining Structures · 2020. 10. 15. · The retaining wall is designed to withstand the forces exerted by the retained ground or “backfill” and

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Wind-Rated Roofs: Designing Commercial Roofs to Withstand ...goodworldcompany.com/G310.pdf · Wind-Rated Roofs Designing CommerCial roofs to WithstanD WinD Uplift forCes

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Eaton’s busway solutions and servicespower cables provide. They are designed to withstand electrical and mechanical forces generated by momentary and short-time short-circuit currents.

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Potential Drift Accumulation at Bridges - USGS Archive · Potential Drift Accumulation at Bridges by Timothy H. Diehl Abstract Drift (floating debris) increases lateral forces on

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Loads and Forces on Timber Bridges

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THE WORLD’S FINEST ILLUMINATION TOOLSlib.store.yahoo.net/lib/opticsplanet/surefire-2006-sf-illum-tools-catalog-lr.pdfthe finished filament must withstand the vibration and G-forces

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MESA DAY BRIDGES. MESA BRIDGES Forces at Work Forces in a Bridge Building Better Bridges Rules Testing Procedures Materials Suppliers.

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Bridge Vulnerabilities Oct 2010. What puts bridges at risk? Ability to withstand seismic forces and displacements.

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Feed-through terminal block - UK 5 N - 3004362Potential distribution via fixed bridges in the terminal center or insertion bridges in the clamping space ... Power frequency withstand

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HDABB 7451683 1.downloads.hindawi.com/journals/abb/2020/7451683.pdf · [4]. The complex interaction of these structures allows the knee to withstand tremendous forces during various

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[PPT]Physics of Bridges - Boy Scout Troop 8 - Madison, …bsa-troop8.org/Truss_Files/Physics_of_Bridges.ppt · Web viewPhysics of Bridges Forces Before we take a look at bridges,

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MESA DAY BRIDGES - UCI MESA Homemesa.eng.uci.edu/Resources/Students/Crafstick and Manila bridges.pdf · MESA BRIDGES MESA BRIDGES Forces are transmitted through materials 4 ways:

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4. Benchmark Bridges - sginstitute.in · Design forces considered are very small compared to the actual Earthquake forces. ... SAP2000 : General SAP2000 : General purpose linear and

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Properties of Materials. 1. Strength Strength is the ability of a material to withstand the forces of compression, tension and shear. The Strength property.

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