Experimental research on shear strength of prestressed beams with thin webs (AGB2001/486)
Overview
Background & policy context:
The primary goal of the research is to improve understanding of the behaviour of bridges influenced by shear in the prestressing cable ducts. This question arises during the evaluation of existing structures, whose durability is also often investigated.
Objectives:
A series of tests on prestressed concrete girders of the viaduct "Sopra Canteen" whose deck will be replaced in 2003 and 2004 will study the behaviour and resistance to shear thin ducts crossed by cable prestressing. Based on these data, the interaction between the disturbance in the flow constraints caused by the presence of cables and cracking produced by the deformation of the reinforcements, may be examined and lead to a better understanding of the phenomena. The result will be a more complete model, taking into account different factors.
It is planned to try a series of 5 beams with a length of 13 m and a weight of about 14 t.
Methodology:
Accredited laboratory tests.
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