Two solutions developed and implemented in NZ for seismic improvement of URM buildings
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Transcript of Two solutions developed and implemented in NZ for seismic improvement of URM buildings
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Dr. Jason Ingham The University of Auckland
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Two solutions developed and implemented in NZ for
seismic improvement of URM buildings
• Engineered Cementious Composite (ECC) applied as shotcrete
• Carbon Fibre Strips applied Near Surface Mounted
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Tens
ile st
ress
(MPa
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Tensile strain (%)
Strengthening of URM buildings using ECC Shotcrete
Yield
Ultimate
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Test program to provide design methodology
6 out-of-plane test 51 in-plane test• 25 clay brick masonry• 26 concrete masonry
Yi-Wei Lin
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Implementation
Wintec F block
Victoria Park Chimney
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NSM CFRP retrofitNear surface mounted (NSM) Carbon FRP (CFRP) strips
Groove preparation 15mm x 1.2mm CFRP strips Retrofitted wall
CFRP NSM
d fbp
t p
b f
Clay brick
Clay brick
Epoxy
CFRPstrip
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Test results
Close up – crack pattern
PIC
Hold downsteel rods
Plaster layer
Aluminiumgrip plates
Steel angle andrubber padrestraints
Steelrestraintplate
Clamp force
NSM CFRPstrip
Steelrestraintplates
53 pull tests conducted
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In-plane wall panels