Imperial College London
Alternate

ProfessorLorenzoMacorini

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Structural Engineering
 
 
 
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Contact

 

+44 (0)20 7594 6078l.macorini

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

325Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Bras:2017:10.1061/(ASCE)ST.1943-541X.0001777,
author = {Bras, Xavier F and Macorini, L and Izzuddin, B and Chisari, C and Gattesco, N and Noe', S and Amadio, C},
doi = {10.1061/(ASCE)ST.1943-541X.0001777},
journal = {Journal of Structural Engineering},
title = {Pushdown tests on masonry infilled frames for assessment of building robustness},
url = {http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0001777},
volume = {143},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The  research  presented  in  this  paper  addresses  the  influence  of  non-structural  masonry  infill  on  the resistance  of  multi-storey  buildings  to  progressive  collapse  under  sudden  column  loss  scenarios.  In particular, the structural response of infilled frames in peripheral bays is investigated within the scope of  a  design-oriented  robustness  assessment  framework  previously  developed  at  Imperial  College London. This  allows  due  consideration  of  structural  redundancy,  ductility,  strength,  dynamic  effects and  energy  absorption capabilities  in  a  unified  manner. The  realistic  contribution  of  masonry  panels towards collapse arrest is examined considering the results from full-scale laboratory tests performed on   different   two-bay   frames   with   brick-masonry   infill   subjected   to   incremental   pushdown deformation, capturing the dominant deformation mode actually found following removal of an edge column.  In  these  physical  tests,  it  is observed  that  the  failure  mechanisms  and  damage  patterns displayed  by  the  infill  panels  under  pushdowndeformation  are  similar  to  those  activated  by  lateral pushover  loading. Clear  evidence  of  diagonal  cracking  and  shear  sliding,  eventually  culminating  in crushing  of  the  compressed  corners, is noted.  Different  infill  configurations  are  tested,  including central  openings  and  an  initial  gap  between  masonry  and  frame  elements.  Overall,  a  global  stable response  is  observed  even in the presence of  severe  damage in  the  masonry  panels,  delivering  a monotonic supply of energy absorption with increasing downwards displacement. The outcome from this experimental research provides mechanically sound and quantifiable evidence that non-structural masonry infill panels in peripheral frames offer a reliable and efficient source of enhanced robustness under column loss events. Due to the widespread application of masonry inf
AU  - Bras,Xavier F
AU  - Macorini,L
AU  - Izzuddin,B
AU  - Chisari,C
AU  - Gattesco,N
AU  - Noe',S
AU  - Amadio,C
DO  - 10.1061/(ASCE)ST.1943-541X.0001777
PY  - 2017///
SN  - 1943-541X
TI  - Pushdown tests on masonry infilled frames for assessment of building robustness
T2  - Journal of Structural Engineering
UR  - http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0001777
UR  - http://hdl.handle.net/10044/1/45439
VL  - 143
ER  -
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