Presentation
Incorporating Link Slabs in High Skew Bridges during Repair Activities--Design Recommendations
Transportation Research Board 90th Annual Meeting
(2011)
Abstract
Link slabs are implemented in new bridges as well as during retrofit to minimize the use of expansion joints. Link slab design process for bridges with less than 20°skew was described in an earlier article by the authors. This article will discuss design recommendations are developed based on the link-slab internal forces under various angles of skew, boundary conditions, and loadings calculated using 3D finite element (FE) models of a prototype bridge. Models were generated for skew angels of 0°, 20°, 30°, and 45°. Applied loads were American Association of State Highway and Transportation Officials (AASHTO) HL-93 live load as well as positive and negative temperature gradients. Analysis results demonstrated significant influence of support conditions on link slab that incorporates reduction factors to girder-end rotations calculated from a simply supported girder and additional modification factors for skew. A detailed skew link slab design procedure is presented.
Disciplines
Publication Date
January 23, 2011
Location
Washington D.C., United States
Citation Information
Michael Romkema, Upul Bandara Attanayake, Haluk M Aktan and Evren Ulku. "Incorporating Link Slabs in High Skew Bridges during Repair Activities--Design Recommendations" Transportation Research Board 90th Annual Meeting (2011) Available at: http://works.bepress.com/upul-attanayake/37/