Imperial College London

DrLorenzoMacorini

Faculty of EngineeringDepartment of Civil and Environmental Engineering

Reader in 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{Setiawan:2020:10.1680/jmacr.19.00562,
author = {Setiawan, A and Vollum, R and Macorini, L and Izzuddin, B},
doi = {10.1680/jmacr.19.00562},
journal = {Magazine of Concrete Research},
title = {Numerical modelling of punching shear failure of RC flat slabs with shear reinforcement},
url = {http://dx.doi.org/10.1680/jmacr.19.00562},
year = {2020}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - This paper utilises non-linear finite-element analysis with three-dimensional (3D) solid elements to gain insight into the role of shear reinforcement in increasing punching shear resistance at internal columns of flat slabs. The solid element analysis correctly captures the experimentally observed gradual decrease in concrete contribution to shear resistance with increasing slab rotation and the failure mode but is very computationally demanding. As an alternative, the paper presents a novel approach, in which 3D joint elements are combined with non-linear shell elements. Punching failure is modelled with joint elements positioned around a control perimeter located at 0.5d from the column face (where d is the slab effective depth). The joint elements connect the nodes of shell elements located to either side of the punching control perimeter. The punching resistance of the joints is related to the slab rotation using the failure criterion of the critical shear crack theory. The joint-shell punching model (JSPM) considers punching failure both within the shear-reinforced region and due to crushing of concrete struts near the support region. The JSPM is shown to accurately predict punching resistance while requiring significantly less computation time than 3D solid element modelling.
AU - Setiawan,A
AU - Vollum,R
AU - Macorini,L
AU - Izzuddin,B
DO - 10.1680/jmacr.19.00562
PY - 2020///
SN - 0024-9831
TI - Numerical modelling of punching shear failure of RC flat slabs with shear reinforcement
T2 - Magazine of Concrete Research
UR - http://dx.doi.org/10.1680/jmacr.19.00562
UR - http://hdl.handle.net/10044/1/80642
ER -