Publications de Juan Sagaseta Albajar

Shear strength of concrete members without transverse reinforcement: A mechanical approach to consistently account for size and strain effects

Aurelio Muttoni, Miguel Fernández Ruiz, Juan Sagaseta Albajar

Many theories and empirical formulae have been proposed to estimate the shear strength of reinforced concrete members without transverse reinforcement. It can be noted that these approaches differ not only in the resulting design expressions, but also on t ...

2015

Assessing punching shear failure in reinforced concrete flat slabs subjected to localised impact loading

Aurelio Muttoni, Miguel Fernández Ruiz, Juan Sagaseta Albajar

Reinforced concrete flat slab structures are used widely in construction projects due to their economic and functional advantages. Punching shear failure in such structures can have catastrophic effects in the case of, for example, multi-storey framed stru ...

Pergamon-Elsevier Science Ltd2014

Punching of flat slabs supported on rectangular columns

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

This paper investigates the structural behaviour of RC flat slabs supported on rectangular interior columns and the influence of the loading conditions (one or two-way bending) on their punching shear strength. The punching shear strength of slabs at recta ...

Engineering Structures2014

Punching shear strength of PC Slabs

Aurelio Muttoni, Thibault Clément, Juan Sagaseta Albajar

This paper presents the results of an experimental research on the influence of prestressing on the punching shear strength of flat slabs. The tests refer to 13 geometrically identical specimens 250 mm thick that were loaded in order to investigate the inf ...

fib Symposium Tel-Aviv 20132013

La teoría de la fisura crítica como base teórica para el diseño de losas frente a punzonamiento en el nuevo Código Modelo 2010 (The Critical Shear Crack Theory as a physical model for punching shear design and its implementation into new Model Code 2010)

Aurelio Muttoni, Miguel Fernández Ruiz, Juan Sagaseta Albajar

On April 2010, the first complete draft of new Model Code 2010 was published. It introduced a number of innovative design approaches, some of them with respect to shear and punching shear. Contrary to Model Code 90 (or some national and international codes ...

Hormigón y Acero2012

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

Influence of aggregate fracture on shear transfer through cracks in reinforced concrete

Juan Sagaseta Albajar

Design methods for shear in reinforced concrete structures typically rely upon shear transfer through cracks, which depends upon the crack opening and sliding displacements and the roughness of the crack surfaces. The effectiveness of shear transfer throug ...

Magazine of Concrete Research2011

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

Influence of beam crosssection, loading arrangement and aggregate type on shear strength

Juan Sagaseta Albajar

This paper describes 14 tests on simply supported and continuous reinforced concrete beams which were designed to investigate the influences of aggregate type, loading arrangement and shear reinforcement ratio on shear strength. The beams were rectangular ...

Magazine of Concrete Research2011

Non-symmetrical punching of flat slabs and slab bridges without transverse reinforcement

Aurelio Muttoni, Miguel Fernández Ruiz, Juan Sagaseta Albajar

Punching of flat slabs without transverse reinforcement has mostly been investigated in the past for slabs with equal reinforcement ratios in the two directions and loaded under axis-symmetrical conditions. However, in practice, slab bridges as well as man ...

fib Symposium London 20092009