Evaluation of compressive membrane action effects on punching shear resistance of reinforced concrete slabs

Belletti, Beatrice; Walraven, J.C.; Trapani, Francesco

doi:10.1016/j.engstruct.2015.03.043

Cited by 50 publications

(32 citation statements)

References 31 publications

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“…Meanwhile, Belletti et al [11][12][13] presented a nonlinear finite element (NLFE) approach which adopts multi-layered shell modelling of RC slabs and postprocessing of NLFE analyses (NLFEA) using the Critical Shear Crack Theory (CSCT) [15] to evaluate the punching shear resistance. In Belletti et al [11,12] NLFEA were carried out with the FE code ABA-QUS and the UMAT for user subroutine in which the crack model denoted as Physical Approach for Reinforced Concrete for Cyclic Loading (PARC_CL) was implemented [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Internal force distribution in RC slabs subjected to punching shear

Shu

Belletti

Muttoni

et al. 2017

Engineering Structures

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Type of publication:Peer reviewed journal article a b s t r a c tReinforced concrete (RC) two-way slabs without shear reinforcement are commonly used in many structural systems. This paper investigated the structural behaviour of RC slabs subjected to concentrated loads leading to punching shear failure using shell and continuum nonlinear finite element analysis (NLFEA). Shear force distributions are studied for four types of slabs with different geometry of support, geometry of slab and layout of reinforcement. All factors investigated have been proven to influence the shear force distributions along the control perimeter around the support. Significant shear force redistributions due to cracking and reinforcement yielding have been observed using NLFEA. Reduced control perimeters to be used for simplified approaches accounting for calculated shear force distributions are calculated using both NLFE approaches.

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Section: Introductionmentioning

confidence: 99%

Internal force distribution in RC slabs subjected to punching shear

Shu

Belletti

Muttoni

et al. 2017

Engineering Structures

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“…When the punching capacity is calculated for the prestressed girder bridge, compressive membrane action (CMA) usually increase the capacity given the prestressed girders, as indicated in Amir and Belletti et al However, even though CMA is considered in building codes, e.g., UK BD81/02 and CHBDC, it is still difficult, if not possible, to analytically calculate the magnitude of compressive membrane action in lateral restraint slab at lower LoA. Therefore, the CMA has not been considered in the calculation at the levels I and II.…”

Section: Resultsmentioning

confidence: 99%

Shear assessment of a reinforced concrete bridge deck slab according to level‐of‐approximation approach

Shu

2018

Structural Concrete

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Reinforced concrete (RC) slabs without shear reinforcement are commonly used for existing bridge structures. For such structures, shear and punching can be the governing failure modes at the ultimate limit state if subjected to large concentrated loads. The aim of this study is to examine a structured approach for the analyses of the RC bridge deck slabs, which make up a considerable proportion of the currently used bridge decks. The method used for analyses is the levels‐of‐approximation introduced in fib Model Code for Concrete Structures 2010. The different levels include simplified calculation method, linear finite element analysis as well as non‐linear finite element analysis. The differences between analysis methods at different levels of analyses were discussed regarding one‐way shear and punching shear behavior of the slab.

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“…If the slab fails due to punching shear, the failure criterion curve can be intersected before or after yielding of the reinforcing bars. The load-rotation curve is predicted here using an NLFEA model adopting multi-layered shell elements combined with the PARC_CL crack model [8], [9].…”

Section: Loa IVmentioning

confidence: 99%

Safety assessment of punching shear failure according to the level of approximation approach

Belletti

Pimentel

Scolari

et al. 2015

Structural Concrete

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The fib Model Code for Concrete Structures 2010 introduced the concept of levels of approximation (LoA) as a strategy for simplifying the procedures involved in preliminary design stages or the design of non-critical structural elements while still providing the tools for engineers to use state-of-the-art techniques in the assessment of existing structures or in the advanced stages of design for critical structural elements. In this paper, this concept is applied to the determination of the punching shear resistance of reinforced concrete slabs. A procedure is validated for the highest LoA involving non-linear finite element analysis (NLFEA) with multi-layered shell elements and the critical shear crack theory (CSCT). The safety format proposed for use in the safety verification assisted by NLFEA is based on the definition of a global resistance safety factor. A semi-probabilistic approach is followed, based on the assumption of a lognormal distribution for the resistance and on an estimate of its coefficient of variation. This approach is validated by means of a comparison with the results from a probabilistic analysis. The LoA approach is initially applied to the study of statically determinate slabs supported on one column to verify the effectiveness of the procedure presented here compared with other validated methods available in the literature. The paper concludes with a case study illustrating the application of the proposed procedure to a bridge deck slab and highlighting the benefits of using a higher LoA.

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Evaluation of compressive membrane action effects on punching shear resistance of reinforced concrete slabs

Cited by 50 publications

References 31 publications

Internal force distribution in RC slabs subjected to punching shear

Internal force distribution in RC slabs subjected to punching shear

Shear assessment of a reinforced concrete bridge deck slab according to level‐of‐approximation approach

Safety assessment of punching shear failure according to the level of approximation approach

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