68
New & Emerging Markets for Post-Tensioned Concrete Theodore L. Neff, P.E. Executive Director Post-Tensioning Institute May 2, 2011 Kansas City, MO
New & Emerging Markets for Post-Tensioned Concrete
Theodore L. Neff, P.E.
Executive Director
Post-Tensioning Institute
May 2, 2011
Kansas City, MO
Post-Tensioning Applications Current Markets
Post-Tensioning Applications Current Markets
New & Emerging Post-Tensioning Applications Future Markets
Buildings
Hybrid Moment
Frames
Walls
Tilt-up
Floors & Slabs
Residential Houses
Transportation
Bridges
Highways
Airports
Energy
Wind
Solar
Nuclear
LNG
New & Emerging Markets for Post-Tensioning
Buildings - Hybrid Moment
Frames
Paramount Apartments
at 3rd & Mission
San Francisco, CA
Photo courtesy of Robert Englekirk
New & Emerging Post-Tensioning Applications Buildings – Hybrid Moment Frames
(19)
Figure courtesy of Robert Englekirk
New & Emerging Post-Tensioning Applications Buildings – Hybrid Moment Frames
Figure courtesy of Robert Englekirk
New & Emerging Post-Tensioning Applications Buildings – Hybrid Moment Frames
Photo courtesy of Robert Englekirk
New & Emerging Post-Tensioning Applications Buildings – Hybrid Moment Frames
New & Emerging Markets for Post-Tensioning
Walls
PT Concrete Wall
Figure courtesy of Tipping Mar + Associates
New & Emerging Post-Tensioning Applications Buildings – Shear Walls
Advantages:
Self-centering
response
Reduced rebar
congestion
Stronger and more
compact
Tough and damage
resistant
PRESSS Research Program (PREcast Seismic Structural Systems)
Courtesy of S. Pampanin and S. Nakaki
Prototype 5-story
building testing at
UC San Diego
New & Emerging Post-Tensioning Applications Buildings – Shear Walls
Photo courtesy of Tipping Mar + Associates
New & Emerging Post-Tensioning Applications Buildings – Shear Walls
Photos courtesy of Tipping Mar + Associates
New & Emerging Post-Tensioning Applications Buildings – Shear Walls
Photos courtesy of Tipping Mar + Associates
New & Emerging Post-Tensioning Applications Buildings – Shear Walls
New & Emerging Markets for Post-Tensioning
Tilt-up Walls
New & Emerging Post-Tensioning Applications Tilt-Up Walls
Test case text
New & Emerging Post-Tensioning Applications Tilt-Up Walls
Test case text
New & Emerging Post-Tensioning Applications Tilt-Up Walls
Test case text
Photos courtesy of Haskell Company
New & Emerging Markets for Post-Tensioning
Commercial & Industrial
Slabs
21
New & Emerging Post-Tensioning Applications Commercial/Industrial Slabs
Advantages:
Reduced
thickness
Far fewer joints
Reduced curling
& warping
Reduced
cracking
Flatter
Reduced
maintenance
New & Emerging Post-Tensioning Applications Commercial/Industrial Slabs
New & Emerging Post-Tensioning Applications Commercial/Industrial Slabs
Photo courtesy of VSL
New & Emerging Post-Tensioning Applications Commercial/Industrial Slabs
New & Emerging Markets for Post-Tensioning
Concrete Houses
New & Emerging Post-Tensioning Applications Concrete Houses
New & Emerging Post-Tensioning Applications Concrete Houses
New & Emerging Post-Tensioning Applications Concrete Houses
New & Emerging Post-Tensioning Applications Concrete Houses
Photos courtesy of Concrete Construction Magazine
New & Emerging Markets for Post-Tensioning
Bridge Decks
New & Emerging Post-Tensioning Applications Bridge Decks: Cast-in-Place
Advantages:
Wider girder spacings – fewer girders
Reduction in concrete and steel
Reduced slab thickness
Better crack control
New & Emerging Post-Tensioning Applications Bridge Decks: Cast-in-Place
Benefits of Wider Girder Spacing:
Fewer girders to be fabricated
Fewer cross-frames to be fabricated
Reduced fabrication time
Fewer pieces to paint
Fewer pieces to be erected
Fewer bolts to be tightened
Reduced erection time
Fewer bearings to purchase, set and maintain
(Modern Steel Construction April, 2001)
New & Emerging Post-Tensioning Applications Bridge Decks: Cast-in-Place
Photo courtesy of Robert Anderson, URS
New & Emerging Post-Tensioning Applications Bridge Decks: Cast-in-Place
Photo courtesy of Robert Anderson, URS
New & Emerging Post-Tensioning Applications Bridge Decks: Cast-in-Place
New & Emerging Post-Tensioning Applications Bridge Decks: Cast-in-Place
Longitudinal PT
Longitudinal Joint
Transverse PT
Transverse Joint
Shear Connector Pocket
Shear Pocket Detail:
Haunch
New & Emerging Post-Tensioning Applications Bridge Decks: Precast
Photo courtesy of Alfred Benesch and Co.
New & Emerging Post-Tensioning Applications Bridge Decks: Precast
Photo courtesy of Alfred Benesch and Co.
New & Emerging Post-Tensioning Applications Bridge Decks: Precast
Photo courtesy of Alfred Benesch and Co.
New & Emerging Post-Tensioning Applications Bridge Decks: Precast
New & Emerging Markets for Post-Tensioning
Bridge Approach Slabs
New & Emerging Post-Tensioning Applications Bridge Approach Slabs
Photos courtesy of Iowa State University
New & Emerging Post-Tensioning Applications Bridge Approach Slabs
Photos courtesy of Iowa State University
New & Emerging Post-Tensioning Applications Bridge Approach Slabs
New & Emerging Post-Tensioning Applications Bridge Approach Slabs
New & Emerging Markets for Post-Tensioning
Spliced Girders
47
Photos courtesy of:
Post-Tensioning Applications Spliced Girders
New & Emerging Markets for Post-Tensioning
Pavements
New & Emerging Post-Tensioning Applications Highway Pavements: Precast
New & Emerging Post-Tensioning Applications Highway Pavements: Precast
New & Emerging Post-Tensioning Applications Highway Pavements: Precast
New & Emerging Post-Tensioning Applications Highway Pavements: Precast
New & Emerging Post-Tensioning Applications Highway Pavements: Cast-in-Place
New & Emerging Post-Tensioning Applications Highway Pavements: Cast-in-Place
Photo courtesy of Moon Won, Texas Tech University
New & Emerging Post-Tensioning Applications Highway Pavements: Cast-in-Place
Photo courtesy of Moon Won, Texas Tech University
New & Emerging Post-Tensioning Applications Highway Pavements: Cast-in-Place
Photo courtesy of Moon Won, Texas Tech University
New & Emerging Post-Tensioning Applications Airport Pavements
New & Emerging Post-Tensioning Applications Airport Pavements
New & Emerging Markets for Post-Tensioning
Wind and Solar Towers
New & Emerging Post-Tensioning Applications Solar Towers
Test case text
New & Emerging Post-Tensioning Applications Solar Towers
Test case text
Photo courtesy of Freyssinet
New & Emerging Post-Tensioning Applications Wind Towers
Foundation
Tie-backs
Tower Segments
New & Emerging Markets for Post-Tensioning
Nuclear Containment
New & Emerging Post-Tensioning Applications Nuclear Containments
Test case text
Photos courtesy of BBR VT
New & Emerging Markets for Post-Tensioning
LNG Storage
New & Emerging Post-Tensioning Applications LNG Storage
Photo courtesy of Freyssinet
New & Emerging Post-Tensioning Applications Advantages & Benefits
