01657433

Component

The Florida Slab Beam (FSB) is a precast, prestressed, flat-slab beam currently used for short-span bridges (less than about 65 feet) by the Florida Department of Transportation (FDOT). Current FSB design includes a cast-in-place (CIP) concrete deck and joint between adjacent beams. Modified section and joint details were desired by FDOT to decrease construction time. The new section and connection geometries will not require a CIP deck and will utilize ultra-high performance concrete (UHPC) in female-to-female joints, which will create an ideal section for accelerated bridge construction applications. This paper presents preliminary design and analyses that investigate transverse moment capacity using eight finite element models: three 18-inch depth joint models and five 12-inch depth joint models using both regular concrete and UHPC at the connection. A number of different joint details were found to have similar performance to current joint details with CIP decks and joints. These joints will be evaluated experimentally in future work.

This paper was sponsored by TRB committee AFF00 Section - Structures. Alternate title: Development of Longitudinal Joint Details for Florida Slab Beam Incorporating Ultrahigh-Performance Concrete.

18-05205

English

14p

2018

Transportation Research Board 97th Annual Meeting

Digital/other

Figures; References; Tables

Bridge construction; Bridge decks; Longitudinal joints; Ultra high performance concrete

Florida

Bridges and other structures; Construction; Materials; Transportation (General)

Transportation Research Board Annual Meeting 2018 Paper #18-05205

TRIS, TRB, ATRI

Jan 8 2018 11:19AM