Imperial College London
Alternate

ProfessorAhmedElghazouli

Faculty of Engineering, Department of Civil and Environmental Engineering

Emeritus Professor of Structural Engineering
 
 
 
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Contact

 

+44 (0)20 7594 6021a.elghazouli

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

440Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Karagiannis:2017:10.1016/j.engstruct.2016.11.006,
author = {Karagiannis, V and Malaga, Chuquitaype C and Elghazouli, AY},
doi = {10.1016/j.engstruct.2016.11.006},
journal = {Engineering Structures},
pages = {243--263},
title = {Behaviour of hybrid timber beam-to-tubular steel column moment connections},
url = {http://dx.doi.org/10.1016/j.engstruct.2016.11.006},
volume = {131},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper presents an experimental and numerical study into the response of bolted connections between Glulam timber beams and tubular steel columns. Six specimens involving two different connection types subjected to monotonically increasing bending action are examined. The first connection type incorporates top and seat angles blind-bolted to the column and jointed to the beam through long bolts. The second connection type is formed by a steel T-stub slotted into the timber beam and connected to it by means of transverse bolts. In addition, two reinforcing techniques aimed at enhancing the response of the slotted-in T-stub configuration are investigated. These include the provision of a bottom wedge angle between the beam and the column as well as the use of perpendicular-to-grain screws to delay wood splitting. The experimental set-up, connection configurations and material properties are introduced followed by a detailed account of the test results and observations. The main behavioural patterns are identified from the experiments and key response characteristics such as stiffness, capacity and failure mechanism are discussed. This paper shows that the use of bottom wedge angles leads to significant enhancement in the flexural yield strength of the T-stub connections, accompanied by a relatively small change in the location of the bolt-group point of rotation (monitored herein by means of Digital Image Correlation techniques). Besides, the use of reinforcing screws is shown to be an effective detail for substantially increasing the rotational ductility of the connections. Finite element simulations of the tests are also presented, together with a detailed description of the modelling approaches employed, in order to gain further insight into the behaviour of the connections. Finally, the applicability of simplified component-based expressions, which are suitable for practical design assessment procedures, for the estimation of the stiffness and capacity of the
AU  - Karagiannis,V
AU  - Malaga,Chuquitaype C
AU  - Elghazouli,AY
DO  - 10.1016/j.engstruct.2016.11.006
EP  - 263
PY  - 2017///
SN  - 0141-0296
SP  - 243
TI  - Behaviour of hybrid timber beam-to-tubular steel column moment connections
T2  - Engineering Structures
UR  - http://dx.doi.org/10.1016/j.engstruct.2016.11.006
UR  - https://www.sciencedirect.com/science/article/pii/S0141029616311555
UR  - http://hdl.handle.net/10044/1/42298
VL  - 131
ER  -
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