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Title: A study of effective moment of inertia models for full-scale reinforced concrete T-beams subjected to a tandem-axle load configuration
Authors: Virginia Polytechnic Institute and State University
Wickline, Joseph Edward.
Cousins, Thomas E.
Seda-Sanabria, Yazmin.
Keywords: Bridge
Effective Moment of Inertia
Reinforced concrete
Axial loads
Mathematical models
Publisher: Geotechnical and Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: ERDC/GSL TR ; 03-12.
Description: Technical Report
Abstract: This study focuses on some of the research efforts from the U.S. Army Engineer Research and Development Center (ERDC) in developing more accurate procedures for the estimation of the load-carrying capacity of in-service fixed bridges, in particular, of reinforced concrete T-beam bridges. This bridge type represents a stumbling block for U.S. Army field engineers whenever they are faced with unknown important parameters for load capacity estimation such as the amount and location of the flexural reinforcement in the T -beam girder cross sections. Research personnel from the ERDC in collaboration with personnel from the Virginia Polytechnic Institute and State University worked in the development of a procedure that is potentially more accurate, can be quickly executed in the field, and is relatively easy to use by military engineers. The evaluation procedure presented herein provides a methodology for transition between the quantity of flexural reinforcement in a reinforced concrete T-beam and the member's actual moment of inertia. This report is aimed at the evaluation of the accuracy of selected, effective moment of inertia models as a component in the proposed evaluation procedure. The accuracy of the selected models is evaluated using laboratory test data generated from an experimental program detailed herein, which included the load testing of full-sca le reinforced concrete T-beams. The test specimens were subjected to a closely spaced, tandem-axle load configuration, which represents a typical load configuration in military equipment.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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