Category: Completed Projects
Group: Superstructure
Subject: Deck Bulb Ts
State: District of Columbia Abstract:
Key Words:
Specific ABC aspect:
Budget (USD): 0.00
Project length: 0
Project Starting Year: 2009
Project Completion Year: 2009
View NCHRP12-69_Final-Report.pdf
Go to: http://onlinepubs.trb.org/onlinepubs/nchrp/docs/NCHRP12-69_FR.pdf
Group: Superstructure
Subject: Deck Bulb Ts
State: District of Columbia Abstract:
This report documents results of a study of decked, precast, prestressed, concrete bridge girders. This type of bridge provides benefits of rapid construction, and improved structural performance. The research was performed to develop guidelines for design and construction and to address issues that significantly influence performance. The first goal was accomplished by development of guidelines for design, construction, and geometry control based on successful methodology currently being used. The second goal of the project was to develop an improved longitudinal joint system. The performance of longitudinal joints between the flanges of adjacent decked girders was defined as a major issue inhibiting the general use of decked girders. An analytical study was performed to develop an optimized family of girder section with consideration for future re-decking. Analytical studies were carried out using the optimized section to define live load and camber leveling load demand on the flange-to-flange joint. A study of potential joint systems was used to define trial alternate joints, Laboratory testing of trial joints was used to identify an improved alternate joint, and full-scale panel tests of the selected alternate joint were conducted to investigate the performance under static and fatigue flexural and flexure-shear loading. The improved joint includes headed reinforcing bars lapped spliced to develop moment and shear continuity in narrow grouted joints. The findings of the longitudinal joint study indicate that the improved joint detail is a viable connection system to transfer the force between adjacent decked bulb tee girders
Key Words:
Decked precast concrete bridge girders
Specific ABC aspect:
Budget and Timeline
Budget (USD): 0.00
Project length: 0
Project Starting Year: 2009
Project Completion Year: 2009
Primary Sponsor
National Cooperative Highway Research Program
Transportation Research Board
500 Fifth Street, NW
Washington, DC 20001 USA
Primary Performing Organization
Construction Technology Laboratories, Inc
5400 Old Orchard Road
Skokie, IL 60077 USA
R.G. Oesterle
Other Documents
View NCHRP12-69_Final-Report.pdf
Other Related URLs
Go to: http://onlinepubs.trb.org/onlinepubs/nchrp/docs/NCHRP12-69_FR.pdf
