Construction engineering of steel tub-girder bridge systems for skew effects

The torsional rigidity of tub-girder makes them ideal for use in curved bridges. The use on skewed support applications by bridge designers is limited as the behavior is complex and requires the use of advanced analysis tools. In consequence, a simplified analysis method to account for the effects o...

Full description

Bibliographic Details
Main Author: Jimenez Chong, Juan Manuel
Published: Georgia Institute of Technology 2012
Subjects:
Online Access:http://hdl.handle.net/1853/43583
id ndltd-GATECH-oai-smartech.gatech.edu-1853-43583
record_format oai_dc
spelling ndltd-GATECH-oai-smartech.gatech.edu-1853-435832013-01-07T20:38:50ZConstruction engineering of steel tub-girder bridge systems for skew effectsJimenez Chong, Juan ManuelSkewSteelBridgeTub-girderBridges Design and constructionGirdersThe torsional rigidity of tub-girder makes them ideal for use in curved bridges. The use on skewed support applications by bridge designers is limited as the behavior is complex and requires the use of advanced analysis tools. In consequence, a simplified analysis method to account for the effects of skew on tub-girder twist rotations and internal torques and how these affect the internal component forces was proposed. The combined effects of skew and curvature are studied by examining the results for analysis with different levels of sophistication for 18 representative bridges. The data generated constitutes the first systematic study on a large set of curved and skewed tub-girder bridges using consistent, refined 3D FEA models to model construction forces and deformations. Comparisons of the simplified analysis method to the refined 3D FEA analysis display the limitations of the simplified analysis and present potential sources of error. Furthermore, the results from the 3D FEA helped identify interactions between components and, therefore, an improved simplified procedure was proposed to account for the effects of the resulting increased stresses. In addition, the bridge erection procedures are discussed and specific examples illustrating the calculation of the fit-up forces is presented. These findings provided additional tools for the analysis process and erection engineering to account for the effects of skew. Lastly, further research needs considering the analysis of additional loading conditions and construction procedures are described.Georgia Institute of Technology2012-06-06T16:42:54Z2012-06-06T16:42:54Z2012-01-17Dissertationhttp://hdl.handle.net/1853/43583
collection NDLTD
sources NDLTD
topic Skew
Steel
Bridge
Tub-girder
Bridges Design and construction
Girders
spellingShingle Skew
Steel
Bridge
Tub-girder
Bridges Design and construction
Girders
Jimenez Chong, Juan Manuel
Construction engineering of steel tub-girder bridge systems for skew effects
description The torsional rigidity of tub-girder makes them ideal for use in curved bridges. The use on skewed support applications by bridge designers is limited as the behavior is complex and requires the use of advanced analysis tools. In consequence, a simplified analysis method to account for the effects of skew on tub-girder twist rotations and internal torques and how these affect the internal component forces was proposed. The combined effects of skew and curvature are studied by examining the results for analysis with different levels of sophistication for 18 representative bridges. The data generated constitutes the first systematic study on a large set of curved and skewed tub-girder bridges using consistent, refined 3D FEA models to model construction forces and deformations. Comparisons of the simplified analysis method to the refined 3D FEA analysis display the limitations of the simplified analysis and present potential sources of error. Furthermore, the results from the 3D FEA helped identify interactions between components and, therefore, an improved simplified procedure was proposed to account for the effects of the resulting increased stresses. In addition, the bridge erection procedures are discussed and specific examples illustrating the calculation of the fit-up forces is presented. These findings provided additional tools for the analysis process and erection engineering to account for the effects of skew. Lastly, further research needs considering the analysis of additional loading conditions and construction procedures are described.
author Jimenez Chong, Juan Manuel
author_facet Jimenez Chong, Juan Manuel
author_sort Jimenez Chong, Juan Manuel
title Construction engineering of steel tub-girder bridge systems for skew effects
title_short Construction engineering of steel tub-girder bridge systems for skew effects
title_full Construction engineering of steel tub-girder bridge systems for skew effects
title_fullStr Construction engineering of steel tub-girder bridge systems for skew effects
title_full_unstemmed Construction engineering of steel tub-girder bridge systems for skew effects
title_sort construction engineering of steel tub-girder bridge systems for skew effects
publisher Georgia Institute of Technology
publishDate 2012
url http://hdl.handle.net/1853/43583
work_keys_str_mv AT jimenezchongjuanmanuel constructionengineeringofsteeltubgirderbridgesystemsforskeweffects
_version_ 1716475688958033920