000019716 001__ 19716
000019716 005__ 20170118182333.0
000019716 04107 $$aeng
000019716 046__ $$k2017-01-09
000019716 100__ $$aCassese, Paolino
000019716 24500 $$aExperimental Study on the Seismic Performance of Typical Existing Reinforced Concrete Bridge Piers With Hollow Rectangular Sections

000019716 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019716 260__ $$b
000019716 506__ $$arestricted
000019716 520__ $$2eng$$aIn economically advanced countries, particularly in Europe and Italy, most of existing bridges have been constructed prior to 1980, before the advancement in earthquake engineering principles and the introduction of adequate seismic codes. These aspects, in combination with the strategic role of bridges in post-earthquake emergency management, specifically for the highway bridges, lead to the need to improve the assessment of the seismic capacity of existing bridge structures. Generally, important bridges have reinforced concrete hollow section piers, economically attractive. Recent main earthquakes around the world have highlighted the inadequate seismic performance of existing hollow piers, mainly due to poor structural detailing and small web thickness. Few experimental contributions are present in literature about bridge piers designed according to obsolete codes. This study concerns an experimental campaign on poorly designed bridge piers with typical transverse section geometry (hollow rectangular) and different aspect ratios. The specimens have been designed in order to be representative of the Italian bridge structures realized in the above-mentioned period, in particular about materials (poor concrete and high strength steel) and reinforcement (low longitudinal and transversal reinforcement ratio). Piers have been designed and realized in 1:4 scale. Quasi-static cyclic tests under displacement control have been performed with a constant axial load. Different failure modes have been observed: flexure and flexure-shear in particular, basically depending on the specimens’ slenderness. Design criteria, adopted setup and experimental results are described and discussed.

000019716 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019716 653__ $$aexisting reinforced concrete bridges; experimental assessment, failure modes.

000019716 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019716 720__ $$aCassese, Paolino$$iRicci, Paolo$$iVerderame, Gerardo Mario$$iManfredi, Gaetano
000019716 8560_ $$ffischerc@itam.cas.cz
000019716 8564_ $$s709445$$uhttps://invenio.itam.cas.cz/record/19716/files/4235.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4235.
000019716 962__ $$r16048
000019716 980__ $$aPAPER