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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Research on the ultimate compression stresses in concrete struts due to shear in precast prestressed bridge beams
Author(s): Aparicio Bengoechea, A.C.; Calavera Ruiz, J.; del Pozo Vindel, F.J.
Appears on pages(s): 33 - 45
Abstract:The new limitation on ultimate compression of web concrete in shear analysis included in Eurocode EC-2 will force the European precast bridge beams manufacturers to change the formworks of their beams, or reduce their applications. The authors of this paper, after having critically analyzed the most representative shear tests and the up-to-date shear theories of Nielsen and Collins, demonstrate that the Eurocode EC-2 is conservative in this issue, because the prestressed concrete beams, thanks to the compression introduced by the prestressing, present higher compression strengths of web concrete than reinforced concrete beams. As a result, the authors suggest to include in the EC-2 a factor to increase the compressive strength of web concrete in prestressed concrete beams. This factor was already proposed by Nielsen in previous stages of EC-2. In order to experimentally verify these statements, the paper also includes the description of the project of several shear tests on precast prestressed bridge beams, which are going to be carried out the next few months.
ACI International Partner, ACHE Spain, International Partner Access.
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