eprintid: 1540115
rev_number: 36
eprint_status: archive
userid: 608
dir: disk0/01/54/01/15
datestamp: 2017-02-09 17:58:59
lastmod: 2021-09-19 23:04:12
status_changed: 2017-02-14 12:31:08
type: proceedings_section
metadata_visibility: show
creators_name: Pohoryles, DA
creators_name: Rossetto, T
creators_name: Melo, J
creators_name: Varum, H
title: A combined FRP and selective weakening retrofit for realistic pre-1970's RC structures
ispublished: inpress
divisions: UCL
divisions: B04
divisions: C05
divisions: F44
note: For copyright information, contact papers@ICONHIC2016.com
abstract: A large proportion of existing reinforced concrete (RC)
buildings is vulnerable to brittle failure mechanisms
in earthquakes due to inadequate seismic detailing. Efficient and practical retrofit solutions are required to prevent future 
losses.
To date, most experimental studies in the field of seismic retrofit with fibre
-
reinforced polymer (FRP) have
concentrated on simplified beam
-
column joint specimens. These often ignore the real practical
challenges incurr
ed by the
presence of a floor slab and transverse beams in retrofitting deficient specimens
. In this study, the results from four cyclic
tests on realistic full
-
scale
typical pre
-
1970’s
beam
-
column joints
with s
labs and transverse beams
are presented
.
Two
realistic retrofit scheme
s
using carbon
CFRP
sheets
are
proposed. The
first
scheme
aims
to improve the duc
tility of the
deficient joint
by
providing continuity of the
column
flexural strengthening through the joint.
The second scheme includes
selective weakening of the slab and aims
to
relocat
e
the
failure mechanism
to the beams
.
The
significance of the
presence
of the slab on the global beha
viour of the sub
-
assembly is confirmed by the experimental findings.
The res
ults highlight
that the proposed
combined
retrofit
and selective weakening scheme
can successfully increase the ductility of the joint by
activating
deformation in
the beams.
date: 2017-06
date_type: published
official_url: http://iconhic2016.com/
oa_status: green
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1207311
lyricists_name: Miranda Melo, Jose
lyricists_name: Pohoryles, Daniel
lyricists_name: Rossetto, Tiziana
lyricists_id: JFMME79
lyricists_id: DAPOH39
lyricists_id: TROSS20
actors_name: Pohoryles, Daniel
actors_id: DAPOH39
actors_role: owner
full_text_status: public
event_title: ICONHIC 2016: 1st International Conference on Natural Hazards & Infrastructure, 28-30 June 2016, Chania, Crete
event_location: Chania, Crete
event_dates: 27 June 2016 - 29 June 2016
institution: ICONHIC 2016 - 1st International Conference on Natural Hazards & Infrastructure
citation:        Pohoryles, DA;    Rossetto, T;    Melo, J;    Varum, H;      (2017)    A combined FRP and selective weakening retrofit for realistic pre-1970's RC structures.                     In:   (Proceedings) ICONHIC 2016: 1st International Conference on Natural Hazards & Infrastructure, 28-30 June 2016, Chania, Crete.       (In press).    Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1540115/1/069_Pohoryles-final_A%20combined%20FRP%20and%20selective%20weakening%20retrofit%20for%20realistic%20pre-1970s%20RC%20structures.pdf