Behavior of thin-walled prestressed concrete roof elements – Experimental investigation and numerical modeling

Belletti, Beatrice; Bernardi, Patrizia; Michelini, Elena

doi:10.1016/j.engstruct.2015.06.058

Cited by 4 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several authors investigated the behaviour up to failure of wing-shaped precast elements with sophisticated models combining mechanical and geometric non-linearities (Belletti 2009;di Prisco et al 2012;Belletti et al 2016) and through experimental testing (Carbonari et al 2013). Static tests on full-scale precast beams of exceptional length were carried out by Kim et al (2016).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Assessment of the Service Behaviour of an Innovative Long-Span Precast Roof Element

Lago

2017

Int J Concr Struct Mater

View full text Add to dashboard Cite

The control of the deformative behaviour of pre-stressed concrete roof elements for a satisfactory service performance is a main issue of their structural design. Slender light-weight wing-shaped roof elements, typical of the European heritage, are particularly sensitive to this problem. The paper presents the results of deformation measurements during storage and of both torsional-flexural and purely flexural load tests carried out on a full-scale 40.5 m long innovative wing-shaped roof element. An element-based simplified integral procedure that de-couples the evolution of the deflection profile with the progressive shortening of the beam is adopted to catch the experimental visco-elastic behaviour of the element and the predictions are compared with normative close-form solutions. A linear 3D fem model is developed to investigate the torsional-flexural behaviour of the member. A mechanical non-linear beam model is used to predict the purely flexural behaviour of the roof member in the pre-and postcracking phases and to validate the loss prediction of the adopted procedure. Both experimental and numerical results highlight that the adopted analysis method is viable and sound for an accurate simulation of the service behaviour of precast roof elements.

show abstract