Comparative study on the seismic performance assessment of existing buildings with and without retrofit strategie

Rakesh, Dumaru; Rodrigues, Hugo; Varum, Humberto

Publication

Comparative study on the seismic performance assessment of existing buildings with and without retrofit strategie

2018-11-22Journal article

dc.contributor.author	Rakesh, Dumaru
dc.contributor.author	Rodrigues, Hugo
dc.contributor.author	Varum, Humberto
dc.date.accessioned	2019-10-03T16:17:49Z
dc.date.available	2019-10-03T16:17:49Z
dc.date.issued	2018-11-22
dc.description.abstract	A large number of inflled RC frame buildings have undergone moderate to extensive structural damages and even collapsed after the 2015 Gorkha earthquake. The repair and maintenance works are still being carried out in the existing RC buildings, many of them without any consultation with design engineers. Such practices are likely to create a beneft of doubt on the efciency of the retroftting works and repair/maintenance works. Therefore, the present study aims to evaluate the seismic performance of the existing non- and pre-engineered buildings, and later employed retroft measures that are commonly practised in the region. The analytical results revealed that the selected buildings were seismically defcient and are most likely to undergo extensive damage to collapse states, at 0.3 g PGA. It was found that the retroft measure signifcantly enhances the stifness, maximum strength and ductility in the existing buildings. The pushover curves indicated that the steel bracing highly increased the stifness, strength and ductility capacity in all case study buildings. The steel-braced building was recorded to have increased the maximum base shear capacity by almost ten times for the soft-storey MRT1 building. Similarly, the retroft measures also eliminated the potential single storey drift concentration recorded in the original building, such that a uniform inter-storey drift profle can be attained throughout. The conditional probability of collapse for the case study buildings, at 0.3 g PGA, ranges from 13.5 to 42% and could be minimized below 4% in the worst case scenario for the shear wall. All the numerical results demonstrated that steel bracing was much more efective in enhancing the seismic performance of the existing buildings.	pt_PT
dc.description.sponsorship	This work has been developed under the collaborative initiative “Holistic Approach to Sustainability of Existing and New Structures”, supported by the College of Civil Engineering of Fuzhou University, China. And the Fuzhou-Roma Tre Universities SinoItalian Centre.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Dumaru, Rakesh & Rodrigues, Hugo & Varum, H. (2018). Comparative study on the seismic performance assessment of existing buildings with and without retrofit strategies. International Journal of Advanced Structural Engineering (IJASE). 10. 10.1007/s40091-018-0207-z.	pt_PT
dc.identifier.doi	https://doi.org/10.1007/s40091-018-0207-z
dc.identifier.issn	20083556
dc.identifier.issn	20086695
dc.identifier.uri	http://hdl.handle.net/10400.8/4165
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.publisher	SpringerOpen	pt_PT
dc.relation	POCI-01-0145-FEDER-007457, CONSTRUCT - FEDER - COMPETE2020	pt_PT
dc.relation	P0CI-01-0145-FEDER-016898 - FCT- ASPASSI	pt_PT
dc.relation.publisherversion	https://link.springer.com/article/10.1007/s40091-018-0207-z	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Non-engineered and pre-engineered buildings	pt_PT
dc.subject	Retroft techniques	pt_PT
dc.subject	Irregularity of infll panels	pt_PT
dc.subject	IDA curves	pt_PT
dc.subject	Fragility curves	pt_PT
dc.title	Comparative study on the seismic performance assessment of existing buildings with and without retrofit strategie	pt_PT
dc.type	journal article
dspace.entity.type	Publication
oaire.citation.conferencePlace	Germany	pt_PT
oaire.citation.endPage	464	pt_PT
oaire.citation.startPage	439	pt_PT
oaire.citation.title	International Journal of Advanced Structural Engineering	pt_PT
oaire.citation.volume	10	pt_PT
person.familyName	Pinheiro Rodrigues
person.givenName	Hugo Filipe
person.identifier	E-5195-2010
person.identifier.ciencia-id	B610-29E9-0E49
person.identifier.orcid	0000-0003-1373-4540
person.identifier.scopus-author-id	23019838500
rcaap.rights	closedAccess	pt_PT
rcaap.type	article	pt_PT
relation.isAuthorOfPublication	a461f4ce-a879-4898-99ec-2fa09e1cfb46
relation.isAuthorOfPublication.latestForDiscovery	a461f4ce-a879-4898-99ec-2fa09e1cfb46