Development of a precast bridge deck overhang system for the Rock Creek Bridge /

Bibliographic Details
Corporate Authors:	Texas Transportation Institute, Texas. Department of Transportation, United States. Federal Highway Administration
Other Authors:	Trejo, David
Format:	Government Document Book
Language:	English
Published:	College Station, Tex. : Texas Transport Institute, Texas A & M University System, [2008]
Series:	Technical report (Texas Transportation Institute) ; 6100-2.
Subjects:	Bridges > Texas > Floors > Design and construction. Precast concrete construction > Texas. Grout (Mortar) > Evaluation. Construction en béton préfabriqué > Texas. Mortier liquide > Évaluation. Bridges > Floors > Design and construction. Precast concrete construction. Texas. Bridge decks. Precast concrete. Prestressed concrete. precast > prestressed > bridge overhang > grout > constructability > bridge deck panel
Online Access:	Connect to resource online

Description
Abstract:	Precast, prestressed panels are commonly used at interior beams for bridges in Texas. The use of these panels provides ease of construction, sufficient capacity, and good economy for the construction of bridges in Texas. Current practice for the overhang deck sections requires that formwork be constructed. The cost of constructing the bridge overhang is significantly higher than that of the interior sections where precast panels are used. The development of a precast overhang system has the potential to improve economy and safety in bridge construction. This research investigated the overhang and shear capacity of a precast overhang system for potential use in the Rock Creek Bridge in Parker County, Texas. Grout material characteristics for the haunch and constructability issues were also addressed. Results indicate that the capacity of the precast overhang system is sufficient to carry factored AASHTO loads with no or very limited cracking. Results from the shear study indicate that the shear capacity of threaded rods and threaded rods with couplers is lower than the conventional R-bar system. However, modifications of the initial design and layout for the end panels should provide sufficient capacity. A commercial grout has been identified for use in the haunch zone.
Item Description:	Project title: Development of a precast bridge deck overhang. Performing organization: Texas Transportation Institute, the Texas A & M University System; project performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration. "Published: December 2008." "FHWA/TX-08/0-6100-2."
Physical Description:	xvi, 115 pages : illustrations (some color) ; 28 cm Also available online; Adobe Acrobat reader required.
Bibliography:	Includes bibliographical references (page 95) .