Category: Completed Projects
Group: Decks
Subject: Deck Panels
State: District of Columbia
Abstract:

This report contains recommended design specifications, construction specifications, and five illustrative examples of durable CIP reinforced concrete connections for precast deck systems that emulate monolithic construction, considering issues including speed of construction, durability, and fatigue. Included in the report is the supporting research that led to these recommendations. This research focused on systems that reduce the need to place and remove formwork thus accelerating on-site construction and improving safety. The three systems considered to accomplish these objectives were: (1) a precast composite slab span system (PCSSS) for short to moderate span structures, (2) full-depth prefabricated concrete decks, and (3) deck joint closure details (e.g., decked-bulb-tee (DBT) flange connections) for precast prestressed concrete girder systems for long span structures. Depending on the system, the connections are either transverse (i.e., across the width of the bridge) or longitudinal (i.e., along the length of the bridge). The first system, PCSSS, is an entire bridge system; whereas the other two systems investigated in the project represented transverse and longitudinal joint details to transfer moment and shear in precast deck panels and flanges of decked bulb tees. Two types of connection concepts were explored with these details, looped bar details and two layers of headed bar details.

Key Words:

Bridge construction; Bridge decks; Bridge design; Cast in place concrete; Girders; Precast concrete; Specifications; Structural connection

Specific ABC aspect:

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Budget and Timeline

Budget (USD): 650000.00
Project length: 60
Project Starting Year: 2006
Project Completion Year: 2011

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Primary Sponsor

National Cooperative Highway Research Program
Transportation Research Board
500 Fifth Street, NW
Washington, DC 20001 USA

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Primary Performing Organization

University of Minnesota
511 Washington Ave SE
Minneapolis, MN 55455 USA

PI: Catherine French
CSE Distinguished Professor, Civil, Environmental, and Geo- Engineering
612-625-3877
cfrench@umn.edu

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Other Documents

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Other Related URLs

Go to: http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=291
Go to: http://www.trb.org/Publications/Blurbs/164971.aspx
Go to: http://www.trb.org/Main/Blurbs/Summary_of_CastInPlace_Concrete_Connections_for_Pr_165677.aspx