Flexural performance of innovative sustainable composite steel-concrete beams

Liu, Xinpei; Bradford, Mark A.; Ataei, Abdolreza

doi:10.1016/j.engstruct.2016.10.009

Cited by 87 publications

(33 citation statements)

References 24 publications

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“…However, in comparison to different degree of shear connection with different diameter of bolts, the result is not very significant. For example, a study conducted by Liu et al stated that a beam with a bolt diameter of 20 mm with a degree of shear connection ratio of 0.92 have similar ultimate strength with a bolt diameter of 16 mm with a degree of shear connection ratio of 0.85 [10]. Based on this finding, the construction costs can be optimized by using smaller size of bolt.…”

Section: Effect Of Bolt Spacing Number Of Bolts (Shear Connection Ramentioning

confidence: 98%

“…The important parameter related to the concrete panel configuration is the width of the gap between the concrete panels. A finite element modelling has been conducted with the width of the gap between concrete panels varying from 0 mm to 4 mm [10]. Based on the result as shown in Fig.…”

Section: Effect Of Concrete Panel Configurationmentioning

confidence: 99%

“…Headed stud shear connector is the most widely used mechanical shear connector (type (a) in Fig. 3), since this type of shear connector can provide robust and ductile shear connection and can be easily installed [10]. Other advantages that can be obtained by using headed stud connectors are; fast welding, good anchor in concrete, the arrangement of reinforcement through the slab is easy, production of large scale size is easy, the standard dimensioned head is a resistance factor for slab uplift and they are practical to be used in steel deck slabs.…”

Section: Introductionmentioning

confidence: 99%

“…3. Type of shear connectors [10] However, many medium-rise buildings have relatively short structural lives in response to changes of urban land use and require demolition [11]. Some of the important issues related to sustainability and full life-cycle assessments in building construction and usage need to be concerned [10].…”

Section: Introductionmentioning

confidence: 99%

“…Type of shear connectors [10] However, many medium-rise buildings have relatively short structural lives in response to changes of urban land use and require demolition [11]. Some of the important issues related to sustainability and full life-cycle assessments in building construction and usage need to be concerned [10]. Conventional headed stud shear connectors that have to be welded to the flange of the steel beam section and cast into the concrete slab to achieve the necessary shear connection cannot be deconstructed easily and their elements are not recyclable.…”

Section: Introductionmentioning

confidence: 99%

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Structural Behavior of Steel-Concrete Composite Beam using Bolted Shear Connectors: A Review

et al. 2018

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Conventional steel-concrete composite beams have been recognized to exhibit stronger structural characteristics, in terms of strength and stiffness, when compared to pure steel or reinforced concrete beams. However, currently most steel beam is fully attached to the concrete slab; this means that the shear connectors are welded through the steel decking on to the steel beam and cast into concrete slab to fulfill the necessary shear connection. Recently, the deconstruction and reuse of the components almost impossible. In order to achieve a sustainable structural system, precast concrete slabs are attached to a steel beam using bolted shear connectors in prefabricated holes have been introduced as an alternative to the conventional connectors in steel -concrete composite beam system. This paper reviews the structural behavior of composite beam system such as the strength, stiffness, slip behavior, failure mode and sustainability obtained by experiment and numerical studies in order to address the applicability and efficiency of the composite beams having precast concrete slabs and bolted shear connectors.

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Section: Effect Of Bolt Spacing Number Of Bolts (Shear Connection Ramentioning

confidence: 98%

Section: Effect Of Concrete Panel Configurationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural Behavior of Steel-Concrete Composite Beam using Bolted Shear Connectors: A Review

et al. 2018

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Demountable composite beams for a circular economy: Large‐scale beam tests

Kozma,

Yang,

Ahmad

et al. 2024

Steel Construction

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The circular economy approach has been introduced to the construction sector to design out waste, reduce carbon emissions and energy use in production of primary materials and achieve resource efficiency. ‘Design for deconstruction’ is increasingly important for a sustainable economy, especially for composite structure that is deemed as resource‐efficient in the first cycle of use. With this background, research has been conducted to facilitate the use of demountable composite beams in steel‐framed structures. This article presents the results of two 6 m full‐scale composite beam tests with prefabricated composite slabs. Demountable shear connectors were used, which have been newly developed within the frame of an EU project. The nominal degree of shear connection of the composite beam specimens was 0.37, which was slightly below the required 0.4 specified in EN1994‐1‐1 for welded shear studs. Based on the experimental observations, it can be demonstrated that (1) the tested demountable composite beam produced higher resistance but lower stiffness values than a comparable reference composite beam with welded shear studs; (2) the beam specimens showed a good plastic behaviour with high ductility despite the non‐ductile nature of the applied demountable shear connectors. Remarks on the demountability of the developed demountable composite beams are provided.

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Experimental investigation using demountable steel-concrete composite reduced web section (RWS) connections under cyclic loads

Almutairi,

Tsavdaridis,

Alonso-Rodriguez

et al. 2023

Bull Earthquake Eng

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This paper presents an experimental study of demountable steel-concrete composite reduced web section (RWS) connections for use in seismic areas. Four composite connection specimens were subjected to sagging and hogging moments to investigate the performance of RWS connections under reversible actions. For such purpose, a single web opening was created near the beam-column joint. Focus was made on the effects of perforation location and composite beam-slab action induced by bolted shear studs within the protected zone. Results indicate that employing RWS connections for seismic retrofit is a viable solution capable of achieving a performance similar to that observed for RBS connections in new buildings. Notably, a Vierendeel Mechanism is formed, allowing for plasticity development in the beam. All RWS connections were capable of achieving an interstory drift larger than 4%, thereby complying with the performance targets set by ANSI/AISC 358-16, ANSI/AISC 341-16 and EC8. Moreover, the deformation of beam-slab shear-transfer bolts was small enough to allow for disassembly after the tests, indicating that the proposed solution could enable reuse and post-earthquake retrofitting.

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Flexural performance of innovative sustainable composite steel-concrete beams

Cited by 87 publications

References 24 publications

Structural Behavior of Steel-Concrete Composite Beam using Bolted Shear Connectors: A Review

Structural Behavior of Steel-Concrete Composite Beam using Bolted Shear Connectors: A Review

Demountable composite beams for a circular economy: Large‐scale beam tests

Experimental investigation using demountable steel-concrete composite reduced web section (RWS) connections under cyclic loads

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