Design versus Assessment of Concrete Structures Using Stress Fields and Strut-and-Tie Models

Muttoni, Aurelio; Ruiz, Miguel Fernández; Niketić, Filip

doi:10.14359/51687710

Cited by 36 publications

(42 citation statements)

References 14 publications

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“…1b-f). Both approaches are in fact related to the principles of the upper-and lower-bound theorems of the theory of plasticity [20]. The former (forces acting on a free-body) investigates on the actions at the edges of the free-body related to the failure mechanism (without any further check inside the freebodies).…”

Section: Classical Definitions Of Shear-transfer Actions and Mechanicmentioning

confidence: 99%

Shear failures in reinforced concrete members without transverse reinforcement: An analysis of the critical shear crack development on the basis of test results

Cavagnis

Ruiz

Muttoni

2015

Engineering Structures

144

102

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Type of publication:Peer reviewed journal article Failures can occur in a progressive manner (at the end of a stable propagation of a critical shear crack) or in a sudden manner (by an unstable progression or development of a new crack). In addition, the development and shape of the failure crack may also be very different from case to case. These differences influence which shear-transfer actions may be governing for a given member and loading situation.Despite the large number of specimens tested in shear, almost no information on the actual crack development during the process of failure is yet available. This paper presents the results of an experimental programme consisting of thirteen beams. The tests were designed to investigate different structural systems and loading conditions commonly found in practice (cantilevers with concentrated and distributed loading, single span beams with distributed loading and continuous beams). The cracking patterns and their associated kinematics were tracked in detail by using photogrammetric techniques at high frequencies during testing and particularly during the process of failure, providing data on the actual crack development leading to shear failure. The observations show that very different cracking patterns may be found and that they might be also developed in different manners. The results are interpreted with reference to the measured crack kinematics and related to the various potential shear-transfer actions, with the aim of providing a useful material towards the development of rational approaches for shear design.

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Section: Classical Definitions Of Shear-transfer Actions and Mechanicmentioning

confidence: 99%

Shear failures in reinforced concrete members without transverse reinforcement: An analysis of the critical shear crack development on the basis of test results

Cavagnis

Ruiz

Muttoni

2015

Engineering Structures

144

102

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“…Victoria et al [17] generated the optimum STM for corbels and concrete deep beams with openings using the isolines topology design (ITD) method and verified the validity of the optimal STM with existing test data. Muttoni et al [18] noted that when constructing the optimal STM for concrete structures, it is necessary to repeatedly optimize and improve the STM. They then gave suggestions on how to obtain the optimum STM.…”

Section: Introductionmentioning

confidence: 99%

Study on an Optimal Strut-And-Tie Model for Concrete Deep Beams

2019

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The optimal strut-and-tie models (STMs) of two typical irregular concrete deep beams were constructed using evolutionary structural optimization and compared with those of previous studies. The reinforced concrete deep beam specimens were cast according to the reinforcement designs guided by different STMs. Eight irregular concrete deep beam specimens were experimentally investigated under stepped loading, and the differences in the amount of steel used, the load-carrying capacity, and the failure pattern of the different specimens were analyzed. The results show that the optimal STMs proposed in this study have significant advantages in terms of cost-effectiveness and can simultaneously ensure the load-carrying capacity, delay the crack propagation of irregular concrete deep beams, and reduce the amount of steel used in structural members. Therefore, they have an important engineering application value for the reinforcement design of irregular concrete deep beams.

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“…This approach has been shown to be simple and robust for design and assessment, and can be easily implemented in a numerical manner (Fernández Ruiz and Muttoni, 2007;Muttoni et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Response of RC panels accounting for crack development and its interaction with rebars

Hars

Niketić

Ruiz

2018

Magazine of Concrete Research

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Design versus Assessment of Concrete Structures Using Stress Fields and Strut-and-Tie Models

Cited by 36 publications

References 14 publications

Shear failures in reinforced concrete members without transverse reinforcement: An analysis of the critical shear crack development on the basis of test results

Shear failures in reinforced concrete members without transverse reinforcement: An analysis of the critical shear crack development on the basis of test results

Study on an Optimal Strut-And-Tie Model for Concrete Deep Beams

Response of RC panels accounting for crack development and its interaction with rebars

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