Numerical investigation of the seismic behaviour of connections of ancient colonnades

Dasiou, M-E; Psycharis, IN; Vrouva, A

dc.contributor.author	Dasiou, M-E	en
dc.contributor.author	Psycharis, IN	en
dc.contributor.author	Vrouva, A	en
dc.date.accessioned	2014-03-01T02:53:23Z
dc.date.available	2014-03-01T02:53:23Z
dc.date.issued	2011	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36284
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-80054827704&partnerID=40&md5=4e21ca5d7c2fae2c74fad895bed12bb4	en
dc.subject	Connections	en
dc.subject	Earthquake response	en
dc.subject	Fractures	en
dc.subject	Monuments	en
dc.subject	Restoration	en
dc.subject.other	Capacity design	en
dc.subject.other	Capacity-design methodology	en
dc.subject.other	Cement mortars	en
dc.subject.other	Distinct element methods	en
dc.subject.other	Earthquake motion	en
dc.subject.other	Earthquake response	en
dc.subject.other	Experimental data	en
dc.subject.other	Monuments	en
dc.subject.other	Numerical investigations	en
dc.subject.other	Numerical results	en
dc.subject.other	Reinforcement bar	en
dc.subject.other	Restoration project	en
dc.subject.other	Seismic behaviour	en
dc.subject.other	Seismic energy	en
dc.subject.other	Seismic event	en
dc.subject.other	Seismic excitations	en
dc.subject.other	Soil conditions	en
dc.subject.other	Stone blocks	en
dc.subject.other	Structural scheme	en
dc.subject.other	Ultimate strength	en
dc.subject.other	Civil engineering	en
dc.subject.other	Computational methods	en
dc.subject.other	Design	en
dc.subject.other	Earthquakes	en
dc.subject.other	Engineering geology	en
dc.subject.other	Numerical methods	en
dc.subject.other	Reinforcement	en
dc.subject.other	Restoration	en
dc.subject.other	Structural dynamics	en
dc.subject.other	Titanium	en
dc.subject.other	Seismic design	en
dc.title	Numerical investigation of the seismic behaviour of connections of ancient colonnades	en
heal.type	conferenceItem	en
heal.publicationDate	2011	en
heal.abstract	As a common practice, restoration projects of ancient colonnades have to deal with joining together fragments of architectural members using threaded titanium bars (reinforcement) fixed into place with cement mortar. The basic criterion for the design of such connections is that, in case of a seismic event, the reinforcement should absorb the seismic energy and fail before the marble suffers any damage. For the dimensioning of the titanium bars, a methodology based on the capacity design philosophy is usually implemented. The accurate calculation of the forces that will be induced to the reinforcement during an earthquake is not an easy task, since the response of the structure is governed by the rocking and the sliding of the individual stone blocks. In this paper, the efficiency of the reinforcement used for the connection of complements, which has been calculated with the above-mentioned capacity design methodology, is investigated for selected severe seismic excitations. The analyses were performed for the case study of the restoration of the colonnades of the Southern part of the Ancient Agora of Kos in Greece. The induced forces were calculated by dynamic analyses, using an accurate numerical description of the restoration's structural scheme and earthquake motions of various characteristics, selected to be compatible with the seismological history and the soil conditions at the site. All the analyses were performed using the code 3DEC, which is based on the distinct element method and has been verified and calibrated by comparison of the numerical results with experimental data. The results show that the simplified design that is applied in practice is adequate, as the stresses induced to the reinforcement bars were always less than the ultimate strength and, in many cases, significantly less than the yield resistance as well.	en
heal.journalName	ECCOMAS Thematic Conference - COMPDYN 2011: 3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering: An IACM Special Interest Conference, Programme	en