Seismic Upgrade Using

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Annual Meeting

Montréal

September 26, 2009






Project 3.3

Seismic Upgrade Using

Innovative Materials


Project Leader:

Murat Saatcioglu


Researchers


Perry Adebar (UBC)


Ken Elwood (UBC)


David Lau (Carleton)


Pierre Léger (Ecole Poly)


Bruno Massicotte (Ecole Poly)


Denis Mitchell (McGill)


Dan Palermo (UofO)


Patrick Paultre (USherbrooke)


Jean Proulx (USherbrooke)


Murat Saatcioglu (UofO)


Robert Tremblay (Ecole Poly)

Summary of Progress


Literature Review


Access to the Japanese database on FRP, concrete, and
steel jacketing of columns (Elwood)


Review of experimental research on Ultra
-
High
Performance Fibre Reinforced Concrete (UPFRC) as
seismic retrofit material (Massicotte)


Use of concrete
-
filled hallow structural steel (HSS)
sections as compression struts (Palermo and Saatcioglu)


A state
-
of
-
the art report on the use of FRP as innovative
seismic retrofit material (Saatcioglu)


Summary of Progress


Analytical Research


Correlation of analytical model predictions with experimental
results of concrete shear walls retrofitted with FRP (Lau)


Non
-
linear dynamic analyses of irregular bridges to assess
the effects of upgrading of critical bridge elements using
innovative materials (Mitchell)


Analysis of ordinary and super elastic shape memory alloy
(SMA) reinforced concrete shear walls (Palermo)


3D nonlinear FE analysis of FRP wrapped columns (Paultre,
Proulx)


Development of a seismic retrofit design methodology for
CSA S806 (Saatcioglu)


Development of a bond
-
slip model and effective bond length
design information for surface bonded FRP (Saatcioglu)

Summary of Progress


Experimental Research


A test program to develop seismic retrofit methodology for
surface bonded FRP on RC shear walls (Lau, Sherwood,
Palermo, Saatcioglu)


A test program for RC columns jacketed with Ultra
-
High
Performance Fibre Reinforced Concrete (Massicotte)


Pseudo
-
dynamic and reversed cyclic tests of RC bridge
and building columns to develop a performance
-
based
FRP seismic retrofit methodology (Paultre, Proulx)



A test program to develop seismic retrofit methodology
involving “Super Elastic Shape Memory Alloys” (Palermo)


Experimental program to develop surface
-
bonded FRP
retrofit techniques for infill and load bearing masonry
walls (Saatcioglu)

Summary of Progress


Experimental Research (Cont’d)


Tests of non
-
ductile RC frames with concrete filled HSS
compression only braces (Palermo, Saatcioglu)


Tests of non
-
ductile RC frames with or without masonry
infill walls, retrofitted with diagonal prestressing
(Saatcioglu)


Shake table tests of 8
-
storey RC shear wall models to
develop FRP repair and retrofit methodologies (Tremblay,
Léger)


Milestones


Project 3.3 in Year 1 in original proposal was
only ½ year duration


Objectives were achieved and exceeded in
some categories, especially if the research
involved were the continuations of previous
efforts


Need for closer collaboration on key topics for
Year 2

Outcomes


Application of FRP as an innovative seismic
retrofit material


Literature review and a state
-
of
-
the art report (in
collaboration with PWGSC)

Future Plans


Frame
-
Wall Interactive Systems:


A large
-
scale test on a concrete “building” (shear wall


multiple floor slabs


gravity column) will be carried out
under reversed cyclic loading (August 2010). The
specimen will subsequently be repaired with innovative
materials and retested (fall of 2010). The test program
will be completed by December 2010.


A scaled model of an 8
-
storey building, consisting of
frame
-
wall assembly, will be tested using the Ecole
Polytechnique shake table, repaired with FRP and
retested (December 2009). Numerical analyses of test
specimen will be conducted. The analytical research will
be expanded to include various modeling issues
involving damping and higher mode effects (Winter
2010).

Future Plans


RC and Masonry Load Bearing Walls:


Experimental research on surface mounted FRP retrofit
methodology for RC shear walls will continue. The test
setup and the fabrication and testing of wall specimens will
be completed by June 2010.


The use of super elastic SMA as an innovative material will
be investigated experimentally. Two
-
½ scale RC shear
walls will be constructed (one with ordinary reinforcement
and the other with SMA reinforcement) by November 2009
and tested by December 2010.


A detailed hysteretic model will be developed for super
elastic SMA for inclusion in nonlinear finite element
analysis of RC components (Jan 2010
-

Aug 2010)


Two concrete block walls with surface bonded FRP sheets
will be designed, built and tested (Jan 2010


Sept 2010)



Future Plans


Building and Bridge Columns:


The literature survey on UPFRC jacketed columns will be
completed. A test program will be designed for rectangular
columns with inadequate strength and detailing. Column
testing will be completed by September 2010.


Compilation of current test data on fibre
-
wrapping and
addition of fibre
-
reinforced concrete will be completed by
June 2010. Analytical studies on the influence of resulting
ductility improvements on the performance of bridges will
be conducted by September 2010.


The performance
-
based FRP rehabilitation procedure
developed for bridge piers will be refined by September
2010. The procedure will be applied in the field in
collaboration with Transports Québec.

Future Plans


Non
-
ductile RC Frames:


Three 2/3 scale non
-
ductile frames will be built and tested
under reversed cyclic loading to develop design and
detailing procedures for concrete filled HSS bracing systems
(Oct 2009


Sep 2010)


Two 2/3 scale non
-
ductile frames with and without block
masonry infill walls will be built, diagonally prestressed and
tested under reversed cyclic loading (Oct 2009


Sep 2010)


Two frame specimens with concrete block infill walls will be
designed and built for subsequent retrofitting with surface
-
bonded FRP (June 2010


September 2010).


Two ½ scale non
-
ductile R/C frames that were damaged and
repaired previously will be diagonally braced with HSS
elements and tested (Oct 2010


Dec 2010).


Surface
-
Bonded FRP on Walls

(
U of O and Carleton)

URM Infill Wall

RC Shear Wall

Shake Table Tests of Frame
-
Wall
Systems (Poly)

Non
-
ductile Frames with URM Infills (U of O)

Displacement (mm)
-800
-600
-400
-200
0
200
400
600
800
-80
-60
-40
-20
0
20
40
60
80
Load (KN)
Load (KN)
-800
-600
-400
-200
0
200
400
600
800
-80
-60
-40
-20
0
20
40
60
80
Displacement (mm)
As Built

Diagonally Prestressed