Experimental study of beams with stiffened large web openings

Al-Dafafea, Taher; Durif, Sébastien; Bouchaïr, Abdelhamid; Fournely, Éric

doi:10.1016/j.jcsr.2018.11.026

Cited by 25 publications

(14 citation statements)

References 17 publications

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“…However, it has been observed some differences concerning the strain distribution at the opening center-line which revealed a more complex strain distribution than expected. Further numerical studies based on a finite element model validated on those experimental results will help pursuing the study of such beams [12].…”

Section: 3mentioning

confidence: 99%

“…Figure 1 Illustration of different failure modes in an isolated opening [12] The Vierendeel failure mechanism is associated to the local bending of the members around the opening due to the transfer of shear force around the opening (Chung et al 2001). Usually, this local bending can lead to the formation of a failure mechanism with 4 plastic hinges at the four opening corners.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of various stiffened openings

Durif¹,

Bouchaïr²,

Al-Dafafea³

2021

ce papers

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Openings in the web of steel beams have a growing use in steel and composite structures. However, in some cases, the presence of large web openings reduces significantly the beam strength, especially in areas of high shear or when a local force is being applied at the location of an opening. As a consequence, steel manufacturers often need to weld stiffeners to reinforce the openings. The actual European design rules do not provide design guidelines for those stiffeners. However, previous design codes, such as the ENV version of the Eurocode, propose some limitations. An example of limitation is to not consider the stiffener additional section in the bending strength of the opening member in the case of a single sided stiffening configuration. However, it could be observed that this kind of limitation can be very conservative. Thus, two experimental test campaigns have been led in order evaluate the behavior of openings with stiffeners. Different stiffening configurations have been tested and evaluated regarding the opening member deflection, strain distribution and strength. The first campaign consists of testing a beam with a rectangular opening in three points bending. Those tests allow the observation of the Vierendeel mechanism and its reinforcement provided by various stiffening configurations. The second test campaign is dedicated to the study of openings loaded directly on the upper member. Those tests allow the comparison of the mechanical behavior between various opening shapes and stiffening configurations under local load.

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Section: 3mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental study of various stiffened openings

Durif¹,

Bouchaïr²,

Al-Dafafea³

2021

ce papers

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“…Wang et al (2014) has investigated failure of castellated beams with fillet corner web openings under Vierendeel mechanism. Experimental results for beams that fail under Vierendeel mechanism were presented by Redwood and McCutcheon (1968); Redwood (1969); Tsavdaridis and D'Mello (2012a); Tsavdaridis and D'Mello (2012b); Erdal and Saka (2013); Morkhade and Gupta (2015); Al-Dafafea et al (2019). Lawson and Hicks (2011) published a guideline for the design of composite beams with large web openings in accordance with Eurocodes and the UK National Annexes.…”

Section: Introductionmentioning

confidence: 99%

“…Orun and Guler (2017); Al-Thabhawee and Al-Kannoon (2018) focused on ring type stiffeners for circular type web openings. Rodrigues et al (2014);Al-Dafafea et al (2019) examined horizontal type stiffeners that are located on top of the openings. Panedpojaman et al (2015); Tsavdaridis and Galiatsatos (2015) studied vertical type stiffeners positioned in different locations of the perforated beam.…”

Section: Introductionmentioning

confidence: 99%

A practical design formulation for perforated beams with openings strengthened with ring type stiffeners subject to Vierendeel actions

Zeytinci

Şahin

Güler

et al. 2021

Journal of Building Engineering

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“…Taking above into account, several special methods of strengthening are known and used. Most common solution is adding different types of stiffeners welded vertically or horizontally in one or two web-sides [10]. The other types of strengthening methods are using of fibre reinforced polymer composite plates adhesively bonded to the steel surface [11,12].…”

Section: Introductionmentioning

confidence: 99%

Strengthening of a steel girder with web openings

Wojnar

Bernatowska

2019

MATEC Web Conf.

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The paper presents results of investigation carried out on structure of the cultural center building in Dębica in Poland. Technical condition of mentioned building after 40 years of exploitation did not allow for its further use. In order to check the reliability of the structure, the authorities of the city commissioned an expertise. This study included basic structure measurements, loads statement and static analysis as well as check of limit states. As a result of the conducted analyses, it was found that the roof structure made of steel girder with web openings did not comply with resistant conditions. The paper presents brief description of building structure, numerical analyses and proposals of strengthening the roof girder.

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Experimental study of beams with stiffened large web openings

Cited by 25 publications

References 17 publications

Experimental study of various stiffened openings

Experimental study of various stiffened openings

A practical design formulation for perforated beams with openings strengthened with ring type stiffeners subject to Vierendeel actions

Strengthening of a steel girder with web openings

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