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Software comparisons and measurements of segmentally constructed bridges.

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Title: Software comparisons and measurements of segmentally constructed bridges.
Authors: Teigen, Jan G.1 (AUTHOR) jantei@vegvesen.no
Source: Bridge Structures. May-Aug2025, Vol. 21 Issue 2/3, p65-80. 16p.
Subjects: Bridge design & construction, Benchmark testing (Engineering), Structural dynamics, Scientific apparatus & instruments, Cantilever bridges, Benchmark problems (Computer science), Deformations (Mechanics)
Abstract: Analysis of large segmentally constructed cantilever bridges is a complex task. It runs through all subsystems in the construction history, keeping track of time, dead weight, prestressing, traveling formwork, temporary columns, jacking of cantilevers, etc., and then finally through the service life of the bridge. This complexity makes results very hard to judge by hand, especially the time dependent behavior, and thus, the designer becomes to a very large extent dependent on the computer program. In this paper, results obtained by various software are compared for two large segmentally constructed bridges. The comparisons revealed unacceptably large differences in long-term girder displacements and column forces. The computer program DARC, that generally gave the largest time dependent effects, was however unable to track the magnitude of measured deflections beyond 15 years for a third bridge, but agreed well with rebar strain recordings over a limited period of 2.5 years in the columns of one of the others. This investigation raises three interrelated issues: (1) improved benchmark testing of this kind of software; (2) calibration of code models for creep and shrinkage to outdoor environment and loading conditions; and (3) need for instrumentation and monitoring of segmentally constructed bridges. [ABSTRACT FROM AUTHOR]
Copyright of Bridge Structures is the property of Sage Publications Inc. 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.)
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  Data: Software comparisons and measurements of segmentally constructed bridges.
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  Data: <searchLink fieldCode="JN" term="%22Bridge+Structures%22">Bridge Structures</searchLink>. May-Aug2025, Vol. 21 Issue 2/3, p65-80. 16p.
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  Data: <searchLink fieldCode="DE" term="%22Bridge+design+%26+construction%22">Bridge design & construction</searchLink><br /><searchLink fieldCode="DE" term="%22Benchmark+testing+%28Engineering%29%22">Benchmark testing (Engineering)</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+dynamics%22">Structural dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Scientific+apparatus+%26+instruments%22">Scientific apparatus & instruments</searchLink><br /><searchLink fieldCode="DE" term="%22Cantilever+bridges%22">Cantilever bridges</searchLink><br /><searchLink fieldCode="DE" term="%22Benchmark+problems+%28Computer+science%29%22">Benchmark problems (Computer science)</searchLink><br /><searchLink fieldCode="DE" term="%22Deformations+%28Mechanics%29%22">Deformations (Mechanics)</searchLink>
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  Data: Analysis of large segmentally constructed cantilever bridges is a complex task. It runs through all subsystems in the construction history, keeping track of time, dead weight, prestressing, traveling formwork, temporary columns, jacking of cantilevers, etc., and then finally through the service life of the bridge. This complexity makes results very hard to judge by hand, especially the time dependent behavior, and thus, the designer becomes to a very large extent dependent on the computer program. In this paper, results obtained by various software are compared for two large segmentally constructed bridges. The comparisons revealed unacceptably large differences in long-term girder displacements and column forces. The computer program DARC, that generally gave the largest time dependent effects, was however unable to track the magnitude of measured deflections beyond 15 years for a third bridge, but agreed well with rebar strain recordings over a limited period of 2.5 years in the columns of one of the others. This investigation raises three interrelated issues: (1) improved benchmark testing of this kind of software; (2) calibration of code models for creep and shrinkage to outdoor environment and loading conditions; and (3) need for instrumentation and monitoring of segmentally constructed bridges. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Bridge Structures is the property of Sage Publications Inc. 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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        Value: 10.1177/15732487251331420
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Benchmark testing (Engineering)
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      – SubjectFull: Structural dynamics
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      – SubjectFull: Scientific apparatus & instruments
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      – SubjectFull: Cantilever bridges
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      – SubjectFull: Benchmark problems (Computer science)
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      – SubjectFull: Deformations (Mechanics)
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              M: 05
              Text: May-Aug2025
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