Type of Document Master's Thesis Author Collins, William Norfleet Author's Email Address email@example.com URN etd-08052010-153314 Title Live Load Testing and Analysis of the Southbound Span of U.S. Route 15 over Interstate-66 Degree Master of Science Department Civil Engineering Advisory Committee
Advisor Name Title Cousins, Thomas E. Committee Chair Roberts-Wollmann, Carin L. Committee Member Sotelino, Elisa D. Committee Member Keywords
- wheel load distribution
- Long-Term Bridge Performance Program
- Federal Highway Administration
- Live load test
- expansion joints
- bridge bearings
- dynamic load allowance
- neutral axis
Date of Defense 2010-07-30 Availability unrestricted AbstractAs aging bridges around the United States begin to near the end of their service lives,
more funding must be allocated for their rehabilitation or replacement. The Federal Highway
Administration’s (FHWA) Long-Term Bridge Performance (LTBP) Program has been developed
to help bridge stakeholders make the best decisions concerning the allocation of these funds.
This is done through the use of high quality data obtained through numerous testing processes.
As part of the LTBP Pilot Program, researchers have performed live load tests on the
U.S. Route 15 Southbound bridge over Interstate-66. The main performance and behavior
characteristics focused on are service strain and deflection, wheel load distribution, dynamic load
allowance, and rotational behavior of bridge bearings.
Data from this test will be used as a tool in developing and refining a plan for long-term
bridge monitoring. This includes identifying the primarily loaded girders and their expected
range of response under ambient traffic conditions. Information obtained from this test will also
aid in the refinement of finite element models by offering insight into the performance of
individual bridge components, as well as overall global behavior. Finally, the methods and
results of this test have been documented to allow for comparison with future testing of this
bridge, which will yield information concerning the changes in bridge behavior over time.
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