A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modeling the Response of Fracture Critical Steel Box-Girder Bridges
Bridges that are classified as fracture critical by AASHTO require more frequent inspections than other types of bridges, resulting in greater costs for their maintenance. Several historical events have shown, however, that severe damage can occur to a bridge without necessarily resulting in its collapse. A primary objective of this research project was to characterize the redundancy that exists in twin steel box-girder bridges, which are widely used in Texas and are classified as fracture critical. The main goal of the research was to develop guidelines for modeling a bridges behavior in the event that a fracture of a critical tension flange takes place. The research carried out under this project included laboratory testing, experimental evaluation of a full-scale box-girder bridge, and detailed structural analyses. Data gathered from the experimental testing program were used to validate nonlinear finite element models as well as simplified engineering models. Based on the results of this research, engineers now have guidelines for modeling the response of twin steel box-girder bridges following the fracture of one of its girders.
Modeling the Response of Fracture Critical Steel Box-Girder Bridges
Bridges that are classified as fracture critical by AASHTO require more frequent inspections than other types of bridges, resulting in greater costs for their maintenance. Several historical events have shown, however, that severe damage can occur to a bridge without necessarily resulting in its collapse. A primary objective of this research project was to characterize the redundancy that exists in twin steel box-girder bridges, which are widely used in Texas and are classified as fracture critical. The main goal of the research was to develop guidelines for modeling a bridges behavior in the event that a fracture of a critical tension flange takes place. The research carried out under this project included laboratory testing, experimental evaluation of a full-scale box-girder bridge, and detailed structural analyses. Data gathered from the experimental testing program were used to validate nonlinear finite element models as well as simplified engineering models. Based on the results of this research, engineers now have guidelines for modeling the response of twin steel box-girder bridges following the fracture of one of its girders.
Modeling the Response of Fracture Critical Steel Box-Girder Bridges
T. Barnard (author) / C. G. Hovell (author) / J. P. Sutton (author) / J. M. Mouras (author) / B. J. Neuman (author)
2010
172 pages
Report
No indication
English
Highway Engineering , Structural Mechanics , Bridges (Structures) , Finite element analysis , Numerical modeling , Design guidelines , Analytical modeling methods , Laboratory testing , Steel , Redundancy , Load carrying capacity , Recommendations , Tables (Data) , Figures , Box girder bridge , Fracture critical , Twin Steel Box-Girder Bridges
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