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Seismic performance of masonry walls retrofitted with steel reinforced grout

TitoloSeismic performance of masonry walls retrofitted with steel reinforced grout
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2016
AutoriDe Santis, S., Casadei P., De Canio Gerardo, de Felice G., Malena M., Mongelli M., and Roselli Ivan
RivistaEarthquake Engineering and Structural Dynamics
Volume45
Paginazione229-251
ISSN00988847
Parole chiavecomposite, Composite materials, Concrete beams and girders, grout, Grouting, High strength steel, Hydraulic lime mortars, Lime, Masonry, Masonry construction, Masonry materials, Mortar, Out-of plane, Reinforcement, Retaining walls, Seismic response, seismic retrofit, Seismic retrofitting, Seismic waves, Seismology, Shake table, shaking table test, Steel, Steel reinforced grout, Strengthening (metal), Traditional reinforcements, Ultra high strength steel, wall, Walls (structural partitions)
Abstract

An innovative solution for the seismic protection of existing masonry structures is proposed and investigated through shake table tests on a natural scale wall assemblage. After a former test series carried out without reinforcement, the specimen was retrofitted using Steel Reinforced Grout. The strengthening system comprises horizontal strips of ultra-high strength steel cords, externally bonded to the masonry with hydraulic lime mortar, and connectors to transversal walls, applied within the thickness of the plaster layer. In order to assess the seismic performance of the retrofitted wall, natural accelerograms were applied with increasing intensity up to failure. Test results provide a deep understanding of the effectiveness of mortar-based composites for improving the out-of-plane seismic capacity of masonry walls, in comparison with traditional reinforcements with steel tie-bars. The structural implications of the proposed solution in terms of dynamic properties and damage development under earthquake loads are also discussed. © 2016 John Wiley & Sons, Ltd.

Note

cited By 7

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84954176814&doi=10.1002%2feqe.2625&partnerID=40&md5=edc32b98f97ef6c8580e6d8d9d550485
DOI10.1002/eqe.2625
Citation KeyDeSantis2016229