Effect of Asynchronous Earthquake Motion on Complex Bridges. I: Methodology and Input Motion.
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| Title: | Effect of Asynchronous Earthquake Motion on Complex Bridges. I: Methodology and Input Motion. |
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| Authors: | Burdette, Nicholas J.1 nick.burdette@arup.com, Elnashai, Amr S.2 aelnash@uiuc.edu, Lupoi, Alessio3 alessio.lupoi@uniroma1.it, Sextos, Anastasios G.4 asextos@civil.auth.gr |
| Source: | Journal of Bridge Engineering. Mar/Apr2008, Vol. 13 Issue 2, p158-165. 8p. 2 Diagrams, 2 Charts, 3 Graphs. |
| Subjects: | Earthquakes, Earth movements, Bridges, Buildings, Engineering geology, Earthquake resistant design, Structural engineering, Moving of buildings, bridges, etc., Models & modelmaking |
| Abstract: | Based on observed damage patterns from previous earthquakes and a rich history of analytical studies, asynchronous input motion has been identified as a major source of unfavorable response for long-span structures, such as bridges. This study is aimed at quantifying the effect of geometric incoherence and wave arrival delay on complex straight and curved bridges using state-of-the-art methodologies and tools. Using fully parametrized computer codes combining expert geotechnical and earthquake structural engineering knowledge, suites of asynchronous accelerograms are produced for use in inelastic dynamic analysis of the bridge model. Two multi-degree-of-freedom analytical models are analyzed using 2,000 unique synthetic accelerograms with results showing significant response amplification due to asynchronous input motion, demonstrating the importance of considering asynchronous seismic input in complex, irregular bridge design. The paper, Part 1 of a two-paper investigation, presents the development of the input motion sets and the modeling and analysis approach employed, concluding with sample results. Detailed results and implications on seismic assessment are presented in the companion paper: Effect of Asynchronous Motion on Complex Bridges. Part II: Results and Implications on Assessment. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Bridge Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 29978663 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effect of Asynchronous Earthquake Motion on Complex Bridges. I: Methodology and Input Motion. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Burdette%2C+Nicholas+J%2E%22">Burdette, Nicholas J.</searchLink><relatesTo>1</relatesTo><i> nick.burdette@arup.com</i><br /><searchLink fieldCode="AR" term="%22Elnashai%2C+Amr+S%2E%22">Elnashai, Amr S.</searchLink><relatesTo>2</relatesTo><i> aelnash@uiuc.edu</i><br /><searchLink fieldCode="AR" term="%22Lupoi%2C+Alessio%22">Lupoi, Alessio</searchLink><relatesTo>3</relatesTo><i> alessio.lupoi@uniroma1.it</i><br /><searchLink fieldCode="AR" term="%22Sextos%2C+Anastasios+G%2E%22">Sextos, Anastasios G.</searchLink><relatesTo>4</relatesTo><i> asextos@civil.auth.gr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Bridge+Engineering%22">Journal of Bridge Engineering</searchLink>. Mar/Apr2008, Vol. 13 Issue 2, p158-165. 8p. 2 Diagrams, 2 Charts, 3 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Earthquakes%22">Earthquakes</searchLink><br /><searchLink fieldCode="DE" term="%22Earth+movements%22">Earth movements</searchLink><br /><searchLink fieldCode="DE" term="%22Bridges%22">Bridges</searchLink><br /><searchLink fieldCode="DE" term="%22Buildings%22">Buildings</searchLink><br /><searchLink fieldCode="DE" term="%22Engineering+geology%22">Engineering geology</searchLink><br /><searchLink fieldCode="DE" term="%22Earthquake+resistant+design%22">Earthquake resistant design</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+engineering%22">Structural engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Moving+of+buildings%2C+bridges%2C+etc%2E%22">Moving of buildings, bridges, etc.</searchLink><br /><searchLink fieldCode="DE" term="%22Models+%26+modelmaking%22">Models & modelmaking</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Based on observed damage patterns from previous earthquakes and a rich history of analytical studies, asynchronous input motion has been identified as a major source of unfavorable response for long-span structures, such as bridges. This study is aimed at quantifying the effect of geometric incoherence and wave arrival delay on complex straight and curved bridges using state-of-the-art methodologies and tools. Using fully parametrized computer codes combining expert geotechnical and earthquake structural engineering knowledge, suites of asynchronous accelerograms are produced for use in inelastic dynamic analysis of the bridge model. Two multi-degree-of-freedom analytical models are analyzed using 2,000 unique synthetic accelerograms with results showing significant response amplification due to asynchronous input motion, demonstrating the importance of considering asynchronous seismic input in complex, irregular bridge design. The paper, Part 1 of a two-paper investigation, presents the development of the input motion sets and the modeling and analysis approach employed, concluding with sample results. Detailed results and implications on seismic assessment are presented in the companion paper: Effect of Asynchronous Motion on Complex Bridges. Part II: Results and Implications on Assessment. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Bridge Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1061/(ASCE)1084-0702(2008)13:2(158) Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 158 Subjects: – SubjectFull: Earthquakes Type: general – SubjectFull: Earth movements Type: general – SubjectFull: Bridges Type: general – SubjectFull: Buildings Type: general – SubjectFull: Engineering geology Type: general – SubjectFull: Earthquake resistant design Type: general – SubjectFull: Structural engineering Type: general – SubjectFull: Moving of buildings, bridges, etc. Type: general – SubjectFull: Models & modelmaking Type: general Titles: – TitleFull: Effect of Asynchronous Earthquake Motion on Complex Bridges. I: Methodology and Input Motion. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Burdette, Nicholas J. – PersonEntity: Name: NameFull: Elnashai, Amr S. – PersonEntity: Name: NameFull: Lupoi, Alessio – PersonEntity: Name: NameFull: Sextos, Anastasios G. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar/Apr2008 Type: published Y: 2008 Identifiers: – Type: issn-print Value: 10840702 Numbering: – Type: volume Value: 13 – Type: issue Value: 2 Titles: – TitleFull: Journal of Bridge Engineering Type: main |
| ResultId | 1 |
