Non-Finito - ACES

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Conclusions • The idea to use CFRP for rehabilitation was called „crazy” in the 1980ties • Today it is state-of-the-art
Conclusions • The idea to use e.g. airbags to preserve civil structures will be called “crazy” these days. • This or similar “crazy” concepts might be state of the art in 5, 10 or 20 years • It is only a question of patience and time. • however
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To help protect your privacy, Power
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Non-Finito = simply uncompleted wor
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Outline • The Past • The Presen
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Corrosion built in 1912 strengthene
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Strengthening with CFRP • light
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Ibach bridge 1991 CFRP strips are g
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Patience, patience, patience ……
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CFRP wires and strips • very high
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Stork bridge 1996 (124 m span, 2 la
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Laminated CFRP strap
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Laminated CFRP strap
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Relative strength vs. radii ro 0.80
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σ // σ ⊥ τ //⊥ non-laminated
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Efficiency 300 250 Capacity [kN] 20
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Creep experiments
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Cross section of T-Beam
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Shear strengthening
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Cable dredger
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Juli 2009
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Roof truss of church Homberg-Efze D
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Seismic retrofitting of masonry wal
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The Dome of Pavia lantern 62 m 41 m
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Selected Problems of Dome possible
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Solution possible concept for rehab
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Worldwide thousands of columns need
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CFRP wrapping of rectangular column
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Active column wrapping woven fabric
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Active column wrapping woven fabric
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Active column wrapping injecting po
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Active column wrapping injecting po
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Active column wrapping Mark Green,
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CFRP Column Wrapping 1995 XXSYS Tec
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Mark Green, Olav Huth, Andreas Wini
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Dr. Hanspeter Kaiser (1989) Prof. D
Page 84: Pre-tensioning equipment Type: tens
Page 89 and 90: Verification experiment Christoph C
Page 91: Mechanised and computer-controlled
Page 94 and 95: 5 hours ≡ 1.45 m 5 hours ≡ 1.45
Page 96 and 97: Pre-tensioned CFRP strips • Why s
Page 98 and 99: Heritage structures: Post-tensionin
Page 100 and 101: Heritage structures: Post-tensionin
Page 102 and 103: Hagia Sophia, Istanbul since 641 pr
Page 104 and 105: Airbags save lives in the automotiv
Page 106 and 107: Hagia Sophia, Istanbul high risk zo
Page 108 and 109: Hagia Sophia, Istanbul crosshead U-
Page 110 and 111: Hagia Sophia, Istanbul
Page 112 and 113: 1943: to avoid another “Tacoma-Ca
Page 114 and 115: Bronx-Whitestone Bridge 1943, insta
Page 116 and 117: Some Problems with Suspension Bridg
Page 118 and 119: 2003: GFRP-Wind Fairings Cable Susp
Page 120 and 121: Net weight “loss” of 5’600 to
Page 122 and 123: What happens when another 20% is go
Page 124 and 125: What if we get to-morrow a contract
Page 126 and 127: Hanger-/Main-Cable Connection Humbe
Page 128 and 129: 2003: Passive FRP- Wind Fairings Ca
Page 130 and 131: 20XX: Adaptive Wind Fairings M wind
Page 133: Outline • The Past • The Presen
Page 137: Thank you very much for your kind a
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Non-Finito - ACES

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