@inproceedings{b3183232e8334921b24638e511777bc1,

title = "Kinematics-based approach for shear strength of prestressed concrete deep beams",

abstract = "Tests of prestressed concrete beams have shown that such members can develop strong strut action with shear-span-to-effective-depth ratio larger than 2.5, beyond the range of conventional reinforced concrete (RC) deep beams. To model this effect, the current paper proposes an approach based on a twoparameter kinematic theory (2PKT) for RC deep beams. The 2PKT is built on a kinematic model with two degrees of freedom that describes the deformation patterns of cracked beams. However, different from RC deep beams, prestressing results in deeper and stronger compression zones, as well as an additional mode of deformations. Therefore, the original 2PKT is modified by introducing a third degree of freedom and a more refined evaluation of the shear carried in the compression zones. The extended kinematics-based approach is then applied to a database of 104 tests of prestressed deep beams from the literature, resulting in an average shear strength experimental-to-predicted ratio of 1.02 and a coefficient of variation of 11.6%.",

keywords = "Deep beams, Kinematic model, Prestress, Shear strength",

author = "Mihaylov, {Boyan I.} and Jian Liu and Ozkan, {Muhammed F.}",

note = "Publisher Copyright: {\textcopyright} Proceedings of the fib Symposium 2020: Concrete Structures for Resilient Society. All rights reserved.; 2020 fib Symposium: Concrete Structures for Resilient Society ; Conference date: 22-11-2020 Through 24-11-2020",

year = "2020",

language = "English",

isbn = "9782940643042",

series = "Proceedings of the fib Symposium 2020: Concrete Structures for Resilient Society",

publisher = "fib. The International Federation for Structural Concrete",

pages = "532--539",

editor = "Bin Zhao and Xilin Lu",

booktitle = "Concrete structures for resilient society - Proceedings of the fib Symposium, 2020",

}