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Macro-Kinematic Approach for Shear Behaviour of Short Coupling Beams with Conventional Reinforcement
Mihaylov, Boyan; Franssen, Renaud
2017In High Tech Concrete: Where Technology and Engineering Meet - Proceedings of the 2017 fib Symposium
Peer reviewed
 

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Keywords :
coupling beams; shear; deformation patterns; kinematic model
Abstract :
[en] Short coupling beams in wall structures work predominantly in shear and develop complex deformation patterns. For this reason they cannot be modelled based on the classical plane-sections-remain-plane hypothesis, and are typically designed with strut-and-tie models. However, because strut-and-tie models are inherently conservative, they can result in very large amounts of shear reinforcement (stirrups), and therefore significant construction difficulties. In addition, strut-and-tie models do not provide information about the deformation capacity of coupling beams, which is important for performance-based seismic design. To address these challenges, this paper discusses a three-parameter kinematic theory (3PKT) for the shear strength and deformation patterns of short coupling beams. The 3PKT approach is situated between simple and conservative strut-and-tie models and complex non-linear finite element (FE) models. While FE models use a large number of degrees of freedom (DOFs) to describe the deformation patterns in coupling beams, the 3PKT method is based on a kinematic model with only three DOFs. The paper presents the formulation of the model and its validation with tests.
Disciplines :
Civil engineering
Author, co-author :
Mihaylov, Boyan ;  Université de Liège > Département ArGEnCo > Structures en béton
Franssen, Renaud ;  Université de Liège > Département ArGEnCo > Structures en béton
Language :
English
Title :
Macro-Kinematic Approach for Shear Behaviour of Short Coupling Beams with Conventional Reinforcement
Publication date :
13 June 2017
Event name :
fib Symposium 2017 - High Tech Concrete: Where technology and engineering meet!
Event date :
from 12-06-2017 to 14-06-2017
Audience :
International
Main work title :
High Tech Concrete: Where Technology and Engineering Meet - Proceedings of the 2017 fib Symposium
Peer reviewed :
Peer reviewed
Available on ORBi :
since 14 July 2017

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