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:2019:10.1016/j.engstruct.2019.109372,
author = {Setiawan, A and Vollum, R and Macorini, L and Izzuddin, B},
doi = {10.1016/j.engstruct.2019.109372},
journal = {Engineering Structures},
pages = {1--19},
title = {Efficient 3D modelling of punching shear failure at slab-column connections by means of nonlinear joint elements},
url = {http://dx.doi.org/10.1016/j.engstruct.2019.109372},
volume = {197},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Failures of isolated slab-column connections can be classified as either flexural or punching. Flexural failure is typically preceded by large deformation, owing to flexural reinforcement yield, unlike punching failure which occurs suddenly with little if any warning. This paper proposes a novel numerical strategy for modelling punching failure in which nonlinear joint elements are combined with nonlinear reinforced concrete (RC) shell elements. The joint elements are employed to model punching failure which limits force transfer from slabs to supporting columns. The shear resistance of individual joint elements is calculated using the critical shear crack theory (CSCT) which relates shear resistance to slab rotation. Unlike other similar models reported in the literature, the joint strength is continually updated throughout the analysis as the slab rotation changes. The approach is presented for slabs without shear reinforcement but could be easily extended to include shear reinforcement. The adequacy of the proposed methodology is verified using experimental test data from isolated internal RC slab-column connections tested to failure under various loading arrangements and slab edge boundary conditions. Comparisons are also made with the predictions of nonlinear finite element analysis using 3-D solid elements, where the proposed methodology is shown to compare favourably whilst requiring significantly less computation time. Additionally, the proposed methodology enables simple calculation of the relative contributions of flexure, torsion and eccentric shear to moment transfer between slab and column. This information is pertinent to the development of improved codified design methods for calculating the critical design shear stress at eccentrically loaded columns.
AU - Setiawan,A
AU - Vollum,R
AU - Macorini,L
AU - Izzuddin,B
DO - 10.1016/j.engstruct.2019.109372
EP - 19
PY - 2019///
SN - 0141-0296
SP - 1
TI - Efficient 3D modelling of punching shear failure at slab-column connections by means of nonlinear joint elements
T2 - Engineering Structures
UR - http://dx.doi.org/10.1016/j.engstruct.2019.109372
UR - https://www.sciencedirect.com/science/article/pii/S0141029618330992?via%3Dihub
UR - http://hdl.handle.net/10044/1/71765
VL - 197
ER -