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Faculté des Sciences appliquées
Faculté des Sciences appliquées
MASTER THESIS
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Kinematic Modelling of the Shear Behaviour of Coupling Beams in Wall Structures

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Franssen, Renaud ULg
Promotor(s) : Mihaylov, Boyan ULg
Date of defense : 27-Jun-2016/28-Jun-2016 • Permalink : http://hdl.handle.net/2268.2/1380
Details
Title : Kinematic Modelling of the Shear Behaviour of Coupling Beams in Wall Structures
Author : Franssen, Renaud ULg
Date of defense  : 27-Jun-2016/28-Jun-2016
Advisor(s) : Mihaylov, Boyan ULg
Committee's member(s) : Denoël, Vincent ULg
Demonceau, Jean-François ULg
Demortier, Luc 
Language : English
Discipline(s) : Engineering, computing & technology > Civil engineering
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master en ingénieur civil des constructions, à finalité approfondie
Faculty: Master thesis of the Faculté des Sciences appliquées

Abstract

[en] Kinematic Modelling of the Shear Behaviour of Coupling Beams in Wall Structures
University of Liège - Faculty of Applied Sciences
Franssen Renaud - Master student in Civil Engineering
Academic Year 2015-2016
Promoter - Boyan Mihaylov

The aim of this thesis is to develop a kinematic model capable of predicting the shear strength and deformation patterns of reinforced concrete coupling beams in coupled wall systems. To assist in the development of the model, data from tests of coupling beams has been collected from literature. The obtained database contains 30 tests of conventionally reinforced coupling beams featuring different failure modes.

Three ways of modelling coupling beams are summarized from the simplest one, strut-and-tie models, to the most complex one, non-linear finite element models (FEM). The intermediate approach discussed in the thesis is a three-parameter kinematic theory (3PKT)\up{\citep{3PKT}} for the shear behaviour of continuous deep beams. Because of the similarities in shear behavior between deep beams and short coupling beams, this approach is used as a foundation for the development of a kinematic model for coupling beams.

To improve the understanding of the behavior of coupling beams and to assist in the development of the kinematic model, non-linear finite element analyses were performed of selected series of coupling beams from the database. These analyses were performed using the program VecTor2 based on the modified compression field theory\up{\cite{mcft1,mcft2}}. It is found that this approach provides reliable predictions of failure load, failure mode, and load-displacement response of coupling beams.

In the main part of the thesis, the kinematic model for continuous deep beams is modified to capture the shear strength of coupling beams. Appropriate physical assumptions are made to reflect the specific features of the shear behaviour of coupling beams. The modified model applies to diagonal shear failures occurring prior to yielding of the longitudinal reinforcement. Six tests from the database exhibited such failures and for these tests the model produced adequate predictions of shear strength.

To extend the validation of the proposed kinematic model, new shear strength data was generated by performing parametric studies with FE models. By comparing the results from the two approaches, it is shown that the relatively simple kinematic model approximates very well the FEM shear strength predictions for coupling beams with variable the aspect ratios, shear reinforcement ratios, and concrete strength.


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Author

  • Franssen, Renaud ULg Université de Liège > Master ingé. civ. constr., fin. appr. (ex 2e master)

Promotor(s)

Committee's member(s)

  • Denoël, Vincent ULg Université de Liège - ULg > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
    ORBi View his publications on ORBi
  • Demonceau, Jean-François ULg Université de Liège - ULg > Département ArGEnCo > Département ArGEnCo
    ORBi View his publications on ORBi
  • Demortier, Luc Bureau d'Etude Greisch
  • Total number of views 44
  • Total number of downloads 28










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