structural concrete structures - umasspeople.umass.edu/cee433/pdf_files/cee433-1.pdf · structural...
TRANSCRIPT
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Structural Concrete Structures
Reinforced Concrete Construction
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Reinforced Concrete Construction
• Formwork– Flat surfaces (element bottom: slabs,
beams)– Vertical Surfaces (element sides: walls,
beams, columns)• Reinforcing bar cage fabrication
– Placing bars and tying• Concrete fabrication and placing
– Bucket placing– Pumping
Wall Formwork
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Slab Formwork
Slab Formwork
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Footing Reinforcing Cage
Finished Wall Footing
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Slab Reinforcement
Concrete Truck and Pump
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Concrete Pump
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Wall Construction
Concrete Pumping
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Concrete Building:
San Francisco, CA
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Concrete Building:Phoenix, AZ
Post-tensioned slabs
Reinforced concrete shear
walls
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Bridges
Rigid Frames – Overpass
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Slab and Beam Bridge
Bridge Frames Supporting Precast Concreteand Steel Beams
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Flat Slab-Column Bridge
Box Girder Bridge
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Post-Tensioned Segmental Bridge (I-70, Colorado)
Interior of Box Girder
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Cantilever Bridge – Variable Cross-Section
Arch Bridges: Natchez Trace Parkway
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Salginatobel, Austria
Salginatobel Bridge
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Selah Creek, Yakima, Washington
Twin fixed concrete arch highway bridges.Heavy arch ribs designed to resist axial force and bending.Columns and deck not designed to resist longitudinal bending (very flexible).
Gotteron Bridge, Fribourg, Switzerland
Twin fixed concrete arches (supported on rock).
Bending stiffness of arch and deck are comparable indicating deck is relied upon for longitudinal flexural moment.
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Concrete Arch, Austria
Alex Fraser Bridge – Cable-Stay Construction
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Alex Fraser Bridge
Location: Annacis, British Columbia, Canada (Fraser River)Construction duration: 1983-1986Main span: steel deck/reinforced concrete slab; 465 m (1540 ft); Total Length 930 mPylons: reinforced concrete, height 153.8 mVolumes: concrete: 80,000 m3; reinforcing steel: 11,600T; prestressing steel 800 T
Normandy BridgeLocation: Siene River (Le Havre, France)Construction duration: 1988-1994 (Opened Jan. 20, 1995); $465 MApproaches: prestressed concreteMain Span: steel and prestressed concrete; 856 m (2810 ft); Total Length 2141 mPylons: reinforced concrete, height 215 mVolumes: concrete: 80,000 m3; reinforcing steel: 11,600T; prestressing steel 800 T
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Roofs
Folded Plate, Las Vegas
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Barrel Shells, Oakland Airport
Cantilever Shell
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Hyperbolic-Paraboloid (Hypar) Roof, Berkeley
Thin Shell Dome
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Y-Shaped Precast Roof Beams
Variable Section Precast Members
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Double-Tee PrecastRoof Beams
Buildings
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Interaction Between Frames and Walls
Marina Towers, Chicago
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Marina CityChicago, IL
Year built: 1964Structural system: Reinforced concreteConcrete shear wall coreNo. stories: 60 (bottom 18 parking)
Year built: 1990Structural system: Reinforced concreteNo. stories: 65Height: 292 m (960 ft)
311 South Wacker Dr.Chicago, IL
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Deep Beam (Transfer Girder), Chicago
Petronas TowersKuala Lumpur, Malaysia
Year built: 1998Structural system: Steel, Reinforced concreteThe world's tallest building (tip of spire) – 452 m (1483 ft) ft
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Trump International Hotel & TowerChicago, IL
Completion: 2008Structural system: Steel, Reinforced concrete92 stories – 415 m (1362 ft)
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Other Structures
CN TowerToronto, Canada
Year built: 1976Structural system: Reinforced concreteThe world's tallest freestanding structure at time of construction
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Hoover DamBlack Canyon, Nevada
Year built: 1931-1936Structural system: Concrete arch-gravity damLength: and 1,244 ft (379 m)Height: 726 ft (221 m)Concrete volume: 3.25 M cu yd
Concrete Structures at UMass
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Campus Center
Graduate Research Center
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Agricultural Engineering
Tobin Hall
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Tobin Hall - Bartlett
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Fine Arts Center
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Herter Hall
Balconies in Herter Hall