Behavior of steel-concrete-steel sandwich beams with blot connectors under off-center impact load

Wang, Yonghui; Sah, Tilak Prasad; Lu, Jingyi; Zhai, Ximei

doi:10.1016/j.jcsr.2021.106889

Cited by 16 publications

(3 citation statements)

References 33 publications

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“…Cold-Form Steel (CFS) channel sections were used in the present investigation. The load-carrying capacity of CFS could be increased, resulting in more effective and cost-effective structural systems [37,38]. Four samples of CFS plates were tested using a tensile coupon according to ASTM E 8 [31].…”

Section: Steelmentioning

confidence: 99%

Behaviour of Steel-Concrete-Steel Sandwich Beams with Novel Enhanced C-Channels

Ayyadurai,

Shanmugam,

Ravindran

2023

Buildings

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As the load increases, most composite beams generally experience failure in both shear and flexural behavior. This outcome highlights the critical challenges of achieving sufficient strength and structural integrity in such beams. The proposed study has used the cold-formed behavior of an Enhanced C-channel (EC) shear connectors and Light Weight Concrete (LWC) to examine the new Steel-Lightweight Concrete-Steel sandwich Beams (SLCSB). The ECs have provided significant shear resistance at the faceplate-LWC interfacial interface and the tension separation resistance for faceplates (cold form steel) from the LWC core. Cold Form Steel (CFS) is the most often used substitute because of its high productivity and practicality in the field. Four different composite beams are examined in the proposed research with different ECs spacing. The beams’ top and bottom face plates are covered using CFS (1.6 mm). In addition to that, two different types of shear connectors are used. Two unique longitudinal spacing of 100 mm and 150 mm are also used for one with lipped ECs and without lipped ECs. Importantly, self-tapping screws are used to secure ECs in place between the top and bottom of the face plates. The effectiveness of the composite beams with various shear connector spacing subjected to a two-point load test is assessed through a series of experiments.

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Section: Steelmentioning

confidence: 99%

Behaviour of Steel-Concrete-Steel Sandwich Beams with Novel Enhanced C-Channels

Ayyadurai,

Shanmugam,

Ravindran

2023

Buildings

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“…It was found that the shear resistance of such beams is dependent on the strength of the steel plate, vertical reinforcement, and stud connectors. Experimentally, Wang et al [6] examined the structural behavior of SCSSB with bolt shear connectors under the effect of off-center drop hammer loading. Several parameters were considered in this study, including the depth of the concrete core, the thickness of the steel plates, and the location of impact loads.…”

Section: Introductionmentioning

confidence: 99%

Torsional Behavior of Steel-Concrete-Steel Sandwich Beams with Welded Stirrups as Shear Connectors

et al. 2023

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The structural performance of a steel-concrete-steel sandwich beam (SCSSB) with welded stirrups to the steel skin plates as shear connections exposed to a pure torsion load was studied in this paper. Eight SCSSB specimens were fabricated and tested under pure torsion. The effects of the compressive strength of the concrete core, 26 and 35 MPa, the thickness of the top and bottom steel skin plates, 2 and 4 mm, and the degree of shear interaction, which represents the number of beam stirrups, between the steel skin plates and the concrete core are 75, 100, and 125%. The experiment beams revealed a similar mode of failure for all SCSSB specimens regarding all considered variables, which started with inclined cracks along the specimens’ side faces and ended with local separation between one of the steel skin plates (top or bottom) and the concrete core. In addition, the experiment results showed an increase in the torsional strength with the increase in the shear connection ratio and the thickness of the steel skin plate, as well as with the increase in the strength of the concrete core. However, it was observed that the torsional ductility of the tested beams is proportional directly to the steel skin plate thickness and degree of interaction and inversely with the concrete compressive strength. The results showed that the use of steel skin plates with welded stirrups as a shear connection could reduce the negative effect of increasing the compressive strength of the concrete core on the torsional ductility of SCSSB. Doi: 10.28991/CEJ-2023-09-01-016 Full Text: PDF

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“…However, the calculation methods and theoretical models for shear resistances, designing guidance and bearing capacities were rarely researched. Nowadays, applications of steel connectors, which work as reinforced ribs on steel plates, have been widely used by immersed tunnel projects [12,15]. In this paper, structural tests were carried out for steel connectors to research bonding forces between concrete and steel plates, and the influence of each designs on the performance of connectors.…”

Section: Introductionmentioning

confidence: 99%

Research on Mechanical Properties of Steel Shell Concrete Immersed Tube Shear Connectors

Huang

Song³

et al. 2023

Lecture Notes in Civil Engineering

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Structural designs of shear connector in immersed tunnel is one of the most significant key technical problems in tunnel designing. According to investigations conducted in Shenzhong Link project, this paper combined numerical simulation methods and experimental verifications and to research effects of shear connector void, stress state, and opening holes on performances of steel–concrete connectors, and also discussed differences of shear slip curves under the influence of factors above, as well as impacts on bearing capacities and stiffnesses of connectors. Through numerical simulations of void and non-void connectors by finite element method, patterns of concrete stress, connector behaviors under tension and compression and shear stresses were analyzed respectively. Additionally, reductions of bearing capacity and stiffness caused by voids and openings which were controlled as variables were discussed. Furthermore, a calculation formula of shear connector bearing capacity is proposed which is in consistent with experimental verifications with considerations of void, stress state and opening. Researches in this paper could provide knowledge for reasonable structural designs of structural connectors in future immersed tunnel engineering construction.

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Behavior of steel-concrete-steel sandwich beams with blot connectors under off-center impact load

Cited by 16 publications

References 33 publications

Behaviour of Steel-Concrete-Steel Sandwich Beams with Novel Enhanced C-Channels

Behaviour of Steel-Concrete-Steel Sandwich Beams with Novel Enhanced C-Channels

Torsional Behavior of Steel-Concrete-Steel Sandwich Beams with Welded Stirrups as Shear Connectors

Research on Mechanical Properties of Steel Shell Concrete Immersed Tube Shear Connectors

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