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In-plane cyclic behaviour of unfired clay and earth brick walls in both unstrengthened and strengthened conditions
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SYSNO ASEP 0448699 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title In-plane cyclic behaviour of unfired clay and earth brick walls in both unstrengthened and strengthened conditions Author(s) Hračov, Stanislav (UTAM-F) RID, SAI
Pospíšil, Stanislav (UTAM-F) RID, SAI, ORCID
Garofano, A. (IT)
Urushadze, Shota (UTAM-F) RID, ORCID, SAINumber of authors 4 Source Title Materials and Structures. - : Springer - ISSN 1359-5997
Roč. 49, č. 8 (2016), s. 3293-3308Number of pages 16 s. Publication form Print - P Language eng - English Country NL - Netherlands Keywords seismic strengthening ; retrofitting ; earth brick walls ; experimental tests ; energy dissipation ; earthquake engineering Subject RIV JM - Building Engineering R&D Projects GP13-41574P GA ČR - Czech Science Foundation (CSF) Institutional support UTAM-F - RVO:68378297 UT WOS 000379590300021 EID SCOPUS 84944711659 DOI 10.1617/s11527-015-0720-5 Annotation This article presents the outcome of a series of in-plane shear tests on non-traditional masonry walls under unstrengthened and strengthened conditions. The uniqueness of the experiments arises from the testing of unfired clay and earth (adobe) bricks, which are typical for numerous historical buildings and which have significantly different mechanical properties in comparison with the nowadays commonly used fired bricks, concrete blocks, etc. The applicability and suitability of two different strengthening techniques, which do not require significant structural intervention, were investigated with the use of two evaluation procedures. The first technique was realised using steel wire ropes that were mechanically fastened to the wall and arranged in an X shape. The other technique comprised of the application of a geo-net to the surface of the wall, which was then covered with a layer of adobe plaster. Two different types of geo-nets were tested. The paper focuses on the assessment of the influences of both strengthening techniques in changing the structural resistance of the walls loaded by a combination of constant vertical compression and a cyclic horizontal loading. Other mechanical parameters, e.g. ductility or damping, were also investigated in detail. In addition, the geo-net retrofitting technique applied to a previously damaged wall was studied. Conclusions and practical recommendations for preventive strengthening of adobe and dry brick masonry walls or for remedial work on damaged masonry in regions with high seismic risk are given. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2017 Electronic address http://link.springer.com/article/10.1617/s11527-015-0720-5
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