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A comparative analysis of longitudinal stiffener cross-section for slender I-girders subjected to patch loading

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10.1002/cepa.480
 
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hdl:2117/107787

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Chacón Flores, Rolando AntonioMés informacióMés informacióMés informació
Loaiza, Nelson
Graciano, Carlos
Casanova, Euro
Document typeConference report
Defense date2017
PublisherWilhelm Ernst & Sohn
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
In the construction of traditional composite bridges whose structure consists of plate girders, the concrete slabs of the decks are often casted before launching. These thin-walled webs are occasionally reinforced with longitudinal stiffeners to increase bending and shear strengths, and for bridges erected by incremental launching, these stiffeners also provide an enhancement for patch loading resistance. Experimental works have shown that ultimate resistance to patch loading is highly dependent on the size, relative position and shape of the longitudinal stiffener. Nonetheless, a comparison between those three factors should be carried out in order to establish the optimum configuration of longitudinal stiffening for webs under compressive forces. Hence, this study attempts to compare the increase of ultimate strength of a slender I-girder subjected to concentrated load using open and closed section types of stiffeners, evaluating three different stiffeners configurations: i) a single open section stiffener, ii) multiple open section stiffeners, and iii) a single closed section stiffener. The nonlinear computations were performed using a finite element analysis parametric model, where the relative position and size of the stiffeners are varied to cover a wide range of geometries.
CitationChacon, R., Loaiza, N., Graciano, C., Casanova, E. A comparative analysis of longitudinal stiffener cross-section for slender I-girders subjected to patch loading. A: European Conference on Steel and Composite Structures. "ce/papers, volume 1, Issue 2-3, September 2017". Copenhague: Wilhelm Ernst & Sohn, 2017, p. 4223-4229. 
URIhttp://hdl.handle.net/2117/107787
DOI10.1002/cepa.480
ISBN2509-7075
Publisher versionhttp://onlinelibrary.wiley.com/doi/10.1002/cepa.480/abstract
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