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EFFECTS OF REPEATED HEAVY LOADS ON HIGHWAY BRIDGES. FINAL REPORT

R W James, R A Zimmerman, James Loper

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Abstract

A literature study, field study, and a finite-element numerical study were combined to determine the nature and significance of progressive damage due to heavy loads on highway bridges. In the field study candidate bridges and control bridges, identical in design but carrying different levels of truck traffic, are compared. Deck damage levels as indicated by type and density of observed cracking are compared, and to the extent possible, correlated to the level of truck traffic. In the numerical study, predicted wheel load-induced fracture patterns are identified for various levels of loading.

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What this paper is about

A literature study, field study, and a finite-element numerical study were combined to determine the nature and significance of progressive damage due to heavy loads on highway bridges. In the field study candidate bridges and control bridges, identical in design but carrying different levels of truck traffic, are compared. Deck damage levels as indicated by type and density of observed cracking are compared, and to the extent possible, correlated to the level of truck traffic. In the numerical study, predicted wheel load-induced fracture patterns are identified for various levels of loading.

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Available abstract

A literature study, field study, and a finite-element numerical study were combined to determine the nature and significance of progressive damage due to heavy loads on highway bridges. In the field study candidate bridges and control bridges, identical in design but carrying different levels of truck traffic, are compared. Deck damage levels as indicated by type and density of observed cracking are compared, and to the extent possible, correlated to the level of truck traffic. In the numerical study, predicted wheel load-induced fracture patterns are identified for various levels of loading.

Key concepts: Truck, Structural engineering, Finite element method, Deck, Cracking, Engineering, Heavy traffic, Bridge deck

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