Doctoral thesis (Dissertations and theses)
Structural properties of steel-concrete composite joints
Duarte Da Costa, Job
2018
 

Files


Full Text
PhD Thesis_Job Duarte_Structural properties of steel-concrete composite joints_reduced version.pdf
Author postprint (15.47 MB)
Download

All documents in ORBilu are protected by a user license.

Send to



Details



Keywords :
Composite connections; Rotation capacity; beam-to-column joints
Abstract :
[en] The performance of steel and concrete composite frames is influenced by the structural properties of beam-to-column composite joints. The accurate assessment of these properties constitutes therefore an important element for a realistic representation of the structural behaviour at serviceability and ultimate limit state. However, the structural joint properties are not equally covered by current design standards; analytical guidance is provided to assess the resistance and stiffness of composite joints, whereas for the rotation capacity an experimental proof is required. Due to the additional effort required to determine the rotation capacity, the global plastic analysis finds little application in the design of composite frames, resulting in a lack of efficiency and material optimization in the final design. In the present work, an analytical model to calculate the rotation capacity of composite joints is derived. Based on the knowledge developed in this research, an improvement of the current design rules for the joint stiffness is proposed. This model is based on an experimental test campaign comprising eight full-scale beamto- column joints with composite slim-floor beams. Besides, a finite element model was developed with the software Abaqus, which has been validated by the experimental tests. Numerical simulations were performed to investigate in-depth the conducted experiments and to analyse the behaviour of additional composite joints with different reinforcement properties. This research has resulted in new analytical design rules for the joint stiffness and rotation capacity. The reliability of these new design rules has been demonstrated for different joint typologies using experimental and numerical data. The development of an analytical method for the rotation capacity of composite joints allows composite beams with composite beam-to-column joints to be designed according to the global plastic analysis without need of experimental evidence. Furthermore, the improvement of the current design rules for the stiffness of composite joints induces a more accurate assessment of the action effects at serviceability and ultimate limit state. This thesis provides therefore a complete methodology to design beam-to-column composite joints.
Disciplines :
Civil engineering
Author, co-author :
Duarte Da Costa, Job ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Language :
English
Title :
Structural properties of steel-concrete composite joints
Defense date :
21 March 2018
Number of pages :
xx, 210
Institution :
Unilu - University of Luxembourg, Luxembourg
Degree :
Docteur en Sciences de l'Ingénieur
Jury member :
Tibolt, Mike
Obiala, Renata
Duarte Simões, Rui António
Available on ORBilu :
since 13 August 2018

Statistics


Number of views
297 (27 by Unilu)
Number of downloads
332 (16 by Unilu)

Bibliography


Similar publications



Contact ORBilu