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Miguel Fernández Ruiz

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Publications associées (249)

Effect of load distribution and variable depth on shear resistance of slender beams without stirrups

Aurelio Muttoni, Miguel Fernández Ruiz

The shear resistance of elements without stirrups has mainly been investigated by test setups involving simply supported beams of constant thickness subjected to one- or two-point loading, and most of the formulas included in codes have been adjusted using ...

ACI Structural Journal2012

The levels-of-approximation approach in MC 2010: application to punching shear provisions

Aurelio Muttoni, Miguel Fernández Ruiz

In order to address how new knowledge influences design expressions, design codes have in most cases become significantly more complex over the last decades. However, this tendency is leading to codes that are too complicated for preliminary design but sti ...

Structural Concrete2012

Levels-of-Approximation Approach in Codes of Practice

Aurelio Muttoni, Miguel Fernández Ruiz

Civil engineering projects typically involve a number of design phases, such as preliminary design, tender design and executive design. The required degree of accuracy for the analysis of the behaviour and strength of the structural members increases as a ...

2012

Punching shear strength of steel fibre reinforced concrete slabs

Aurelio Muttoni, Miguel Fernández Ruiz, Luis Felipe Maya Duque

The ultimate strength of reinforced concrete slabs is frequently governed by the punching shear capacity, which may be increased with addition of traditional fitments such as reinforcing steel, headed studs or shear heads. In addition to these traditional ...

Engineering Structures2012

Influence of geometric, strain and size effects on bond in structural concrete

Aurelio Muttoni, Miguel Fernández Ruiz

Design formulations for calculation of bond strength in structural concrete members usually include a number of parameters such as the stress acting in the reinforcement, the concrete cover and the diameter of the reinforcing bars. These parameters are act ...

Bond in Concrete 20122012

Punching shear strength of R/C slabs subjected to fire

Aurelio Muttoni, Miguel Fernández Ruiz

This paper illustrates a study on the punching shear strength of reinforced concrete slabs in fire conditions. To this end, a set of experimental data on the punching strength of heated slab specimens was interpreted by adapting the well-known Critical She ...

Proceedings of the 7th International Conference on Structures in Fire - SiF2012 (Eds. M. Fontana, A. Frangi, M. Knobloch)2012

Experimental Investigation on Punching Strength and Deformation Capacity of Shear-Reinforced Slabs

Aurelio Muttoni, Miguel Fernández Ruiz, Stefan Lips

This paper presents the results of an extensive experimental campaign on 16 flat-slab specimens with and without punching shear reinforcement. The tests aimed to investigate the influence of a set of mechanical and geometrical parameters on the punching sh ...

ACI Structural Journal2012

Assembling system between columns and a slab and construction process therefore

Aurelio Muttoni, Roberto Guidotti, Miguel Fernández Ruiz

A concrete slab assembling system comprising: -a reinforced concrete slab (1); -a supporting column (2); -a supported column (3), having a bottom-end with a reference outer diameter thereof; -an interface adaptor (10) for placement between the supported co ...

2011

Authors’ closure on discussion by A. Windisch of paper “Shear on Rotation Capacity of Reinforced Concrete Members Without Shear Reinforcement”

Aurelio Muttoni, Rui Vaz Rodrigues, Miguel Fernández Ruiz

ACI Structural Journal2011

Authors’ closure on discussion by A. Windisch of paper “Strengthening of flat slabs against punching shear using post-installed shear reinforcement”

Aurelio Muttoni, Miguel Fernández Ruiz

ACI Structural Journal2011

Crushing and Flexural Strength of Slab-Column Joints

Aurelio Muttoni, Roberto Guidotti, Miguel Fernández Ruiz

In multi-storey buildings, columns are usually not continuous through the slabs to enhance ease of construction. Consequently, in slab–column joints, slabs have to carry column loads in addition to the shear and bending moments due to loads applied to the ...

Engineering structures2011

New provisions for punching shear in Model Code 2010 based on the Critical Shear Crack Theory

Aurelio Muttoni, Miguel Fernández Ruiz, Luca Tassinari, Juan Sagaseta Albajar

The provisions for punching shear around concentrated loads in the new Model Code 2010 (MC2010) have been updated, covering a large number of design cases such as slabs with and without transverse reinforcement, different column/slab geometries and prestre ...

fib Symposium Prague 20112011

Non-axis-symmetrical punching shear around internal columns of RC slabs without transverse reinforcement

Aurelio Muttoni, Miguel Fernández Ruiz, Luca Tassinari, Juan Sagaseta Albajar

Most analytical approaches and available test data for punching shear in flat slabs assume axis-symmetrical conditions, which seems realistic for representing slabs supported on columns equally spaced in both orthogonal directions. However, in practice, th ...

Magazine of Concrete Research2011

Behaviour and design of slab-column joints

Aurelio Muttoni, Roberto Guidotti, Miguel Fernández Ruiz

This paper presents an investigation on the behaviour and strength of slab-column joints in multystorey buildings. Such joints may develop different potential failure modes such as crushing of the concrete of the slab (due to column loading), bending or pu ...

fib Symposium Prague 20112011

Applications of bent-up bars as shear and integrity reinforcement in R/C slabs

Aurelio Muttoni, Miguel Fernández Ruiz, Luca Tassinari, Stefan Lips

Bent-up bars were extensively used as shear reinforcement in beams and slabs from the first R/C developments up to the 1970’s. Their use was justified by the fact that they allowed enhanced development of the tensile reinforcement at the same time they act ...

fib Symposium Prague 20112011

Reinforced Concrete Slab Shear Prediction Competition: Entries and Discussion

Aurelio Muttoni, Miguel Fernández Ruiz

American Concrete Institute2010

Strengthening of flat slabs against punching shear using post-installed shear reinforcement

Aurelio Muttoni, Miguel Fernández Ruiz

A significant number of existing flat slabs currently require strengthening against punching shear for safety reasons (the increase of applied loads and deficiencies during design or construction) or to comply with more stringent code requirements. Availab ...

ACI Structural Journal2010

Performance and Design of Punching-Shear Reinforcing Systems

Aurelio Muttoni, Miguel Fernández Ruiz

Punching shear reinforcement is increasingly used in flat slabs as an effective solution to increase their strength and deformation capacity. Several punching shear reinforcing systems have been developed in the past, such as studs, stirrups or bent-up bar ...

3rd fib International Congress2010

Durchstanzen von Flachdecken bei hohen Stützenlasten

Aurelio Muttoni, Roberto Guidotti, Miguel Fernández Ruiz

Beton- und Stahlbetonbau2010

Influence of Shear on Rotation Capacity of Reinforced Concrete Members Without Shear Reinforcement

Aurelio Muttoni, Rui Vaz Rodrigues, Miguel Fernández Ruiz

The influence of shear on the rotation capacity of one-way slabs without shear reinforcement is investigated in this paper by means of an experimental study. The experimental program consisted of 11 slab strips 8400 mm (331 in.) long and 450 mm (17.7 in.) ...

ACI Structural Journal2010

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