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Effect of plastic hinge properties in nonlinear analysis of highway bridges
Author
Source
Jordan Journal of Civil Engineering
Issue
Vol. 6, Issue 4 (31 Dec. 2012), pp.501-510, 10 p.
Publisher
Jordan University of Science and Technology Deanship of Research
Publication Date
2012-12-31
Country of Publication
Jordan
No. of Pages
10
Main Subjects
Topics
Abstract EN
Current design practice of highway bridges is moving towards an increased emphasis on nonlinear static analysis methods.
Modelling for such analysis requires the determination of the nonlinear properties of the bridge elements that are expected to behave nonlinearly.
Nonlinear static analysis is carried out for either user-defined nonlinear hinge properties or automated-hinge properties, as available in the software SAP2000. User defined hinge properties can be obtained using the recommendations of the Seismic Retrofit Manual by the Federal Highway Administration.
Automated-hinge properties in SAP2000 are computed automatically from the element material and section properties according to Caltrans criteria.
The bridge designer needs to be aware of that the majority of old bridges were built with little or no consideration to seismic forces and plastic hinge detailing requirements.
Therefore, the use of automated-hinge properties for old bridges in nonlinear static analysis may lead to unrealistic displacement capacities.
In this study, pushover analysis of two highway bridges built with little attention to seismic forces was performed in an effort to evaluate the difference in global response predicted by using the user-defined nonlinear hinge properties or automatedhinge properties in the software SAP2000.
The results demonstrated that user-defined hinge model is capable of capturing the effect of local failure mechanisms, in the plastic hinge region, on the global response of the Bridge ; while the automated-hinge model cannot capture this effect.
Therefore, automated-hinge properties should be used with a lot of care, especially for old bridges that might include local failure mechanisms in the plastic hinge region.
American Psychological Association (APA)
Shatarat, Nasim K.. 2012. Effect of plastic hinge properties in nonlinear analysis of highway bridges. Jordan Journal of Civil Engineering،Vol. 6, no. 4, pp.501-510.
https://search.emarefa.net/detail/BIM-311600
Modern Language Association (MLA)
Shatarat, Nasim K.. Effect of plastic hinge properties in nonlinear analysis of highway bridges. Jordan Journal of Civil Engineering Vol. 6, no. 4 (2012), pp.501-510.
https://search.emarefa.net/detail/BIM-311600
American Medical Association (AMA)
Shatarat, Nasim K.. Effect of plastic hinge properties in nonlinear analysis of highway bridges. Jordan Journal of Civil Engineering. 2012. Vol. 6, no. 4, pp.501-510.
https://search.emarefa.net/detail/BIM-311600
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 510
Record ID
BIM-311600