This paper describes the design and flexural testing of a joint design for a spliced prestressed precast I-girder, for its intended use as a “field-spliced” moment-carrying connection in a 210+ ft simply-supported bridge span – to achieve span lengths beyond current transportation limits for precast segments. The design intends for the joint area to be prestressed at the job-site, utilizing hydraulic jacks mounted to the girder web face to push apart coupled precast segments. The developed splicing method considers current construction practices and the steps of the method are presented. Flexural static testing of the spliced beam specimens is described and the spliced beams’ behavior is compared with typical prestressed beam design. The final product was a repeatable cast-in-place prestressed splice design and construction technique to achieve longer spans with prestressed precast members.
展开▼
