Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Architecture
Bridge Deck Replacement For Minimum Expected Cost Under Multiple Reliability Constraints, Mark G. Stewart, Allen C. Estes, Dan M. Frangopol
Bridge Deck Replacement For Minimum Expected Cost Under Multiple Reliability Constraints, Mark G. Stewart, Allen C. Estes, Dan M. Frangopol
Architectural Engineering
The present paper investigates the effect of limit state selection (strength versus serviceability) on bridge deck life-cycle costs and thus on optimal repair strategies. Such a comparison may then help determine whether safety or functionality (or both) are important criteria when optimizing bridge life-cycle performance and costs. The structural element under consideration is a reinforced concrete bridge deck; namely, a State Highway Bridge in Colorado. Two limit states are considered: ultimate strength and serviceability. The exceedence of either of the limit states considered herein will result in deck replacement; namely, if the reliability index falls below a target reliability index …
Updating Reliability Of Steel Miter Gates On Locks And Dams Using Visual Inspection Results, Allen C. Estes, Dan M. Frangopol, Stuart D. Foltz
Updating Reliability Of Steel Miter Gates On Locks And Dams Using Visual Inspection Results, Allen C. Estes, Dan M. Frangopol, Stuart D. Foltz
Architectural Engineering
As both reliability analyses and systematic inspection programs for the world’s infrastructure gain increased usage and prominence, it becomes more important to use the information from routine visual inspections to update lifetime reliability assessments and resulting life-cycle inspection/repair strategies. The Army Corps of Engineers currently uses reliability analyses to economically justify the major rehabilitation of navigation structures. This paper illustrates how the Condition Index visual inspections for locks and dams can be modified and used to update the reliability analysis of a steel miter gate. The miter gates on two existing locks and dams along the Mississippi River are used …