Analisi teorico-sperimentale del comportamento ciclico di sezioni di estremità di travi prefabbricate reticolari miste

Lidia La Mendola, Piero Colajanni, Valeria Badalamenti

Research output: Contribution to conferenceOther

Abstract

[automatically translated] It investigates the seismic behavior of prefabricated trusses mixed, not self-supporting in the first phase, in which the prefabricated truss is constituted by a bottom plate of steel type S355, and an upper current made from reinforced concrete with steel bars of B450C type, connected by a core made from a V-shaped bars tilted backwards. the results of a bending test on three points are shown on a representative sample of a pair of converging beams to a node connected to a pillar in reinforced concrete with cast in situ connection. The test was conducted with more load cycles of positive moment, one of great breadth and one next to negative time up to failure. The use of strain gauges arranged on the elements of the metal lattice and the continuity to the node of reinforcing bars, before the completion of the completion of the concrete casting, allowed to detect with accuracy the strength and stiffness contributions provided in the seat of the plastic hinge formation sections. The experimental results are interpreted by means of a model for diffused to plasticity fibers by adopting a discretization able to grasp the magnitude of the plastic zipper and to highlight the section from which the metal plate is able to provide resistant contributions.
Original languageItalian
Pages1-10
Number of pages10
Publication statusPublished - 2009

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