Numerical investigation of the punching shear capacity of transversely prestressed concrete deck slabs

2019 ◽  
Vol 20 (3) ◽  
pp. 1109-1122 ◽  
Author(s):  
Sana Amir ◽  
Cor van der Veen ◽  
Joost C. Walraven ◽  
Ane de Boer
Keyword(s):  
Numerical Investigation ◽  
Prestressed Concrete ◽  
Shear Capacity ◽  
Punching Shear ◽  
Deck Slabs ◽  
Concrete Deck

scholarly journals NUMERICAL INVESTIGATION OF THE BEARING CAPACITY OF TRANSVERSELY PRESTRESSED CONCRETE DECK SLABS

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Sana Amir ◽  
Cor van der Veen ◽  
Joost Walraven ◽  
Ane de Boer ◽  
Joost C. Walraven
Keyword(s):  
Finite Element ◽  
Prestressed Concrete ◽  
Numerical Models ◽  
Experimental Studies ◽  
Shear Capacity ◽  
Punching Shear ◽  
Scale Model ◽  
Fe Model ◽  
Deck Slabs ◽  
Concrete Deck

The paper investigates the effect of various geometrical and material parameters on the bearing (punching shear) capacity of transversely prestressed concrete deck slabs by numerical methods. Experiments on a 1:2 scale model of such a bridge were carried out in the laboratory and a 3D nonlinear finite element (FE) model was developed in the finite element analysis software package TNO DIANA (2012) to study the structural behavior in punching shear. A comparison of the experimental and numerical ultimate loads show that the non-linear FE models can predict the load carrying capacity quite accurately with a standard deviation of 0.1 and the coefficient of variation of only 10%. The effect of varying the transverse prestressing level, the presence and size of the ducts, size of the loading plate and the concrete class is also described as part of the parametric study. It was observed that sufficient saving in cost could be made if calibrated numerical models are employed to investigate existing structures rather than doing expensive experimental studies.

NONLINEAR FINITE ELEMENT ANALYSIS OF TRANSVERSELY PRESTRESSED CONCRETE DECK SLABS

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Sana Amir ◽  
Cor van der Veen ◽  
Ane de Boer
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Prestressed Concrete ◽  
Punching Shear ◽  
Membrane Action ◽  
Element Analysis ◽  
Deck Slabs ◽  
3D Solid ◽  
Compressive Membrane Action ◽  
Concrete Deck

This paper describes the modeling and analysis procedure of a 3D, solid, nonlinear finite element (FE) model of a bridge developed in the finite element analysis software package TNO DIANA to study the structural behavior in punching shear of transversely prestressed concrete deck slabs cast between flanges of long, pretensioned girders, and compressive membrane action. The numerical research was part of a broad project involving laboratory experiments carried out on a 1:2 scale model of such a bridge in Delft University of Technology. Both the experimental and numerical results showed much higher capacities than expected and this was attributed to the development of compressive membrane action in the plane of the slab. The numerical results were then compared with the experimentally found ultimate loads of eight basic test cases and it was discovered that the nonlinear FE models can predict the load carrying capacity quite accurately with a coefficient of variation of only 11%. It was concluded that punching shear failures can be reasonably modeled with non-linear finite element analysis of 3D solid models. Furthermore, using composed elements can lead to the determination of compressive membrane forces developed in a laterally restrained slab, which was previously difficult to determine using analytical techniques.

Punching Shear in Prestressed Concrete Deck Slabs: Parametric Study

2019 ◽  
Vol 116 (4) ◽  
Author(s):  
Sana Amir ◽  
Cor van der Veen ◽  
Joost C. Walraven ◽  
Ane de Boer
Keyword(s):  
Prestressed Concrete ◽  
Parametric Study ◽  
Punching Shear ◽  
Deck Slabs ◽  
Concrete Deck

Querkrafttragfähigkeit von Stahlbeton- fahrbahnplatten ohne Querkraftbewehrung von Brücken im Bestand unter vorwiegend konzentrierten Radlasten/Shear Capacity of Reinforced Concrete Deck Slabs without Shear Reinforcement of Existing Bridges under Predominantly Concentrated Wheel Loads

Bauingenieur ◽  
2020 ◽  
Vol 95 (11) ◽  
pp. 419-429
Author(s):  
Viviane Adam ◽  
Maike Harter ◽  
Josef Hegger ◽  
Reinhard Maurer ◽  
Günter Alex Rombach ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Shear Capacity ◽  
Shear Reinforcement ◽  
Deck Slabs ◽  
Existing Bridges ◽  
Concrete Deck

Zusammenfassung Bei vielen bestehenden Stahlbetonbrücken weist die Fahrbahnplatte rechnerisch keine ausreichende Querkrafttragfähigkeit auf. Trotz dieses Defizits sind Schäden bislang nicht bekannt. Die wesentliche Einwirkung resultiert aus den konzentrierten Radlasten für deren Ansatz bislang keine einheitliche Nachweismethode existiert. In einem von der BASt beauftragten Forschungsvorhaben wurde basierend auf den Untersuchungen der TU Hamburg eine Vorgehensweise für den Querkraftnachweis von Fahrbahnplatten ohne Querkraftbewehrung für den Neubau entwickelt, die eine computerunterstützte Querkraftnachweisführung ohne händische Ermittlung einer mitwirkenden Plattenbreite erlaubt. Dieser neue Vorschlag wurde für die Brückennachrechnung angepasst und wird im Folgenden erläutert.

Bearing Capacity of Transversely Prestressed Concrete Deck Slabs

2020 ◽  
Vol 30 (4) ◽  
pp. 534-544
Author(s):  
Sana Amir ◽  
Cor van der Veen ◽  
Joost C. Walraven ◽  
Ane de Boer
Keyword(s):  
Bearing Capacity ◽  
Prestressed Concrete ◽  
Deck Slabs ◽  
Concrete Deck

Punching shear provisions for reinforced and presfressed concrete flat slabs

1996 ◽  
Vol 23 (2) ◽  
pp. 502-510 ◽  
Author(s):  
N. J. Gardner
Keyword(s):  
Reinforced Concrete ◽  
Correction Factor ◽  
Prestressed Concrete ◽  
Shear Capacity ◽  
Punching Shear ◽  
Concrete Slabs ◽  
Flat Slabs ◽  
Reinforced Concrete Slabs ◽  
Unbonded Tendons ◽  
Effective Depth

The validity of the CSA A23.3-94 code provisions for punching shear were compared with the punching shear results of 142 reinforced concrete flat slabs, 16 prestressed concrete flat slabs with unbonded tendons, and 17 flat slabs with unbonded prestressed and supplementary bonded reinforcement. The code prediction equations are not capable of direct verification against experimental results without using a correction factor. Using a justifiable correction factor, the CSA A23.3-94 provisions are appropriately conservative for reinforced concrete slabs but the scatter is large. However, it was concluded that the CSA A23.3-94 provisions are not conservative for prestressed concrete flat slabs. An equation is proposed to calculate the punching shear capacity of reinforced concrete and prestressed concrete slabs, which has a smaller coefficient of variation than the punching shear provisions of CSA A23.3-94, for symmetrically loaded interior columns. The critical section of the proposed method is the perimeter of the column, which is easier to justify than an arbitrary critical perimeter half the effective depth of slab from the column. Key words: reinforced concrete, prestressed concrete, flab slabs, punching shear.

Punching and fatigue behavior of long-span prestressed concrete deck slabs

2010 ◽  
Vol 32 (9) ◽  
pp. 2861-2872 ◽  
Author(s):  
Hoonhee Hwang ◽  
Hyejin Yoon ◽  
Changbin Joh ◽  
Byung-Suk Kim
Keyword(s):  
Prestressed Concrete ◽  
Fatigue Behavior ◽  
Long Span ◽  
Deck Slabs ◽  
Concrete Deck
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