Punching shear in prestressed concrete deck slabs: a comprehensive study

A large number of bridges in the Netherlands have transversely post tensioned deck slabs cast in-situ between flanges of precast girders and were found to be critical in shear when evaluated by Eurocode 2. To investigate the bearing (punching shear) capacity of such bridges, a 1:2 scale bridge model was constructed in the laboratory and...

Modelling compressive membrane action and geometrical nonlinearity in one way concrete slabs

Increased traffic loads and ageing of concrete bridges and overpasses in the Netherlands make it necessary to reassess these existing structures. Consequently, the current condition and capacity of many concrete structures need to be evaluated. Residual capacity could be discovered during reassessments of concrete slabs due to a phenomenon...

Numerical Study of Interface Behaviour in Composite SHCC-Concrete Beams

A parking garage of Eindhoven airport partially collapsed in 2017. It was caused by failure of the longitudinal joint (long-side) of the composite plank floor or breedplaatvloer on the roof level. Experimental and numerical research showed that the joint suffered high positive bending moment in its transverse direction. However, from the...

Compressive Membrane Action in Immersed Tubes: A Finite Element Study

Compressive membrane action is a phenomenon commonly found in reinforced concrete structures after significant cracking and deformation have taken place. In this thesis report, the potential benefit of CMA in immersed tubes subjected to fires is quantified through a finite element study. Furthermore, sensitivity studies are conducted in order to...

Fatigue Testing of Transversely Prestressed Concrete Decks

In the Netherlands, slab-between-girder bridges with prestressed girders and transversely prestressed decks in between the girders require assessment. Static testing showed that compressive membrane action increases the capacity of these structures and that the decks fail in punching shear. The next question is if compressive membrane action...

Punching Capacity of Prestressed Concrete Bridge Decks Under Fatigue

Previous research showed that the capacity of existing slab-between-girder bridges is larger than expected based on the punching shear capacity prescribed by the governing codes, as a result of compressive membrane action. A first series of fatigue tests confirmed that compressive membrane action also acts under cycles of loading. However, a...

Fatigue Assessment of Prestressed Concrete Slab-Between-Girder Bridges

In the Netherlands, the assessment of existing prestressed concrete slab-between-girder bridges has revealed that the thin, transversely prestressed slabs may be critical for static and fatigue punching when evaluated using the recently introduced Eurocodes. On the other hand, compressive membrane action increases the capacity of these slabs,...

Hidden capacity of prestressed concrete deck slab with T-beams

The role of the slab mechanism compressive membrane action is investigated, during the direct loading of a beam integrated in a prestressed deck bridge.

Compressive Membrane Action in Prestressed Concrete Deck Slabs

One of the most important questions that structural engineers all over the world are dealing with is the safety of the existing structures. In the Netherlands, there are a large number of transversely prestressed bridge decks that have been built in the last century and now need to be investigated for their structural safety under the actual ...

Bearing capacity of prestressed concrete decks slabs

In the Netherlands, most of the bridges were built more than 50 years ago and it is essential for designers to find out if these bridges are safe for modern traffic especially in shear since that was not considered in design recommendations before 1976. Detailed experiments have been carried out in the laboratory to investigate punching shear...

Theoretical and numerical approach of ultimate capacity of transversely prestressed concrete deck

Introduction Many researchers have been discovered that bridge deck slabs which were designed to fail in bending, mostly fail under punching shear mode at a higher load than the expected for bending, because of the effect of in-plane compressive membrane forces, induced by the lateral restrained boundary conditions. Punching and bending failure...

Punching shear strength of transversely prestressed concrete decks

In the Netherlands, there is a need to determine the capacity of bridge decks as a large number of them were built back in the 60’s and 70’s. Since then, not only a lot of additional safety requirements have been incorporated into the modern codes but the traffic flow has also increased drastically. The current research deals with this question...

Loading capacity of laterally restrained prestressed concrete slabs

Research about the influence of compressive membrane action on the loading capacity of laterally restrained prestressed concrete slabs. The thesis consists of four parts: - literature research; - comparison New Zealand code; - investigation theory's; - investigation FEM-analysis.