Institutional-Repository, University of Moratuwa.  

Life evaluation of critical members of steel bridges located in different atmospheres

Show simple item record

dc.contributor.author Wanninayake, WTMSM
dc.contributor.author Wasala, WMPR
dc.contributor.author Bandara, CS
dc.date.accessioned 2015-12-29T09:58:31Z
dc.date.available 2015-12-29T09:58:31Z
dc.date.issued 2015-12-29
dc.identifier.uri http://dl.lib.mrt.ac.lk/handle/123/11553
dc.description.abstract Abstract: Most of the iron and steel bridges in Sri Lanka are more than 100 years old. Since many of them are reaching or exceeding their design lives, the risk of collapsing those bridges have increased. One of the probable damages which bridges experience due to increasing traffic volume as well as environmental degradations such as corrosion is the corrosion fatigue failure. This problem is severe in bridges located in industrial areas and along the coastal line of the country. Corrosion and corrosion fatigue made a huge attention in the recent past due to many failures of bridges all over the world. This paper presents a study conducted on assessing the corrosion fatigue damage of steel bridges. It proposes a procedure developed using existing fatigue and corrosion models for evaluating the remaining fatigue life. The procedure includes condition surveys, field loading tests, finite element modelling and analysis, developing S-N curves for different atmospheric conditions, use of corrosion rates and assessing cumulative fatigue damage. The paper also presents a case study: a century old iron and steel (mild steel and wrought iron) railway truss bridge damaged by both corrosion and fatigue. Using details of condition survey, load testing, appropriate corrosion data, finite element modelling and a corrosion fatigue assessment procedure, the remaining life of the bridge was evaluated for two atmospheric conditions; (i) corrosive atmosphere and (ii) noncorrosive atmosphere. The results of the evaluation were then compared to show the impact of the atmospheric condition on the fatigue life of the bridge. en_US
dc.language.iso en en_US
dc.subject metal fatigue, corrosion, steel bridge, damage assessment, life evaluation en_US
dc.title Life evaluation of critical members of steel bridges located in different atmospheres en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Engineering en_US
dc.identifier.year 2015 en_US
dc.identifier.conference 6th International Conference on Structural Engineering and Construction Management 2015 en_US
dc.identifier.place Kandy, Sri Lanka en_US
dc.identifier.pgnos 7 en_US
dc.identifier.email mailto:[email protected] en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record