Robustness of bridges

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Lilja, Heikki
dc.contributor.advisor Ollila, Risto Kainulainen, Martyna 2016-12-22T11:17:37Z 2016-12-22T11:17:37Z 2016-12-12
dc.description.abstract In this thesis, methods for providing and evaluating robustness of bridges are studied. As a general requirement for robustness, a bridge should not damage in a manner disproportionate to an original cause of the failure. A disproportionate damage appears, when an igniting event is insignificant by its character compared to the extent of its consequences. It follows that occurrence of a relatively insignificant hazard, like a minor design or manufacturing error in a structure detail, should not imply partial or total collapse of a bridge. Four examples of bridge collapses are described together with their possible causes in order to discern hazards that can influence a safety of bridge structures. Some of the hazards that might occur during bridge lifecycle are identified and categorised. Definition of robustness is presented together with some important related terms as vulnerability, damage tolerance, progressive collapse and redundancy. Some proposed methods of quantifying robustness are briefly summarised. A literature survey on different national and international standards and guidelines is made. Strategies for providing robustness in bridges used in Canada, United States of America, Australia, New Zealand are outlined. A method for evaluating robustness is proposed. It consists of two different approaches based on local resistance and redundancy of the bridge. The proposed method is applied in two case studies: 33,6 m long two span concrete slab bridge over a river and 118,8 m long four span concrete prestressed girder overpass. en
dc.format.extent 75+2
dc.language.iso en en
dc.title Robustness of bridges en
dc.type G2 Pro gradu, diplomityö fi Insinööritieteiden korkeakoulu fi
dc.subject.keyword bridges en
dc.subject.keyword robustness en
dc.subject.keyword redundancy en
dc.subject.keyword local failure en
dc.subject.keyword collapse en
dc.identifier.urn URN:NBN:fi:aalto-201612226283
dc.programme.major Rakennetekniikka fi
dc.programme.mcode R3001 fi
dc.type.ontasot Master's thesis en
dc.type.ontasot Diplomityö fi
dc.contributor.supervisor Kiviluoma, Risto
dc.programme Rakenne- ja rakennustuotantotekniikan koulutusohjelma fi

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