Article (Scientific journals)
Detailed crack-based assessment of a 4-m deep beam test specimen
Trandafir, Alexandru; Proestos, Giorgio T.; Mihaylov, Boyan
2022In Structural Concrete, 24 (1), p. 756 - 770
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Keywords :
crack-based assessment; deep beams; kinematic model; size effect
Abstract :
[en] When shear cracking occurs in existing reinforced concrete deep members, engineers are faced with the challenge of determining the safety of the members. This paper presents a crack-based assessment approach that utilizes the Two-Parameter Kinematic Theory (2PKT) as a framework for the assessment of lightly reinforced concrete deep beams. The paper presents three assessment approaches with progressively increasing levels of approximation (LoAs). The first level of approximation (LoA I) involves using the 2PKT in a predictive manner for situations where the crack shapes are unknown, LoA II improves upon LoA I by incorporating more detailed modeling of the strain in the transverse reinforcement at the location of the critical cracks, and LoA III includes the details of LoA II but also uses the detailed crack geometry as an input in the assessment. Each of the LoAs is presented and compared with experimental data from a 4-m deep beam test in the literature. The shear carrying mechanisms determined from the kinematic model are evaluated and compared across LoAs. Finally, the paper utilizes LoA III to study the size effect in shear for deep beams. The results quantify the influence of aggregate interlock on the size effect in shear critical deep beams.
Precision for document type :
Review article
Disciplines :
Civil engineering
Author, co-author :
Trandafir, Alexandru  ;  Université de Liège - ULiège > Département ArGEnCo > Structures en béton
Proestos, Giorgio T. ;  Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, United States
Mihaylov, Boyan  ;  Université de Liège - ULiège > Département ArGEnCo > Structures en béton
Language :
English
Title :
Detailed crack-based assessment of a 4-m deep beam test specimen
Publication date :
08 September 2022
Journal title :
Structural Concrete
ISSN :
1464-4177
eISSN :
1751-7648
Publisher :
John Wiley and Sons Inc
Volume :
24
Issue :
1
Pages :
756 - 770
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
The research was conducted by the authors as a part of an ongoing international collaborative effort on the Crack-Based Assessment of Concrete Structures (CBACS). The authors would like to thank Professor Michael Collins and Evan Bentz from the University of Toronto for conducting the unique large-scale experiment, from which the engineering community continues to learn important lessons on the shear response of concrete structures.
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since 27 September 2023

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