Influence of Concrete and Fibre Concrete on the Load‐carrying Capacity and Deformability of Composite Steel‐concrete Columns

Szmigiera, Elżbieta

doi:10.3846/13923730.2007.9636419

Cited by 12 publications

(6 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For all the specimens the mean value of the yield strength of the steel profiles was equal to fy = 282 MPa and the reinforcement fy = 317 MPa. From the total of 16 tested elements [10,11] the 3 most representative series of columns loaded through steel and concrete simultaneously were chosen for the purpose of this study. Elements were loaded in hydraulic press by axial compressive force down to failure.…”

Section: Experimental Researchmentioning

confidence: 99%

08.31: Analysis of the load transfer between materials in composite concrete encased steel columns loaded axially

Grzeszykowski

Szmigiera

2017

ce papers

View full text Add to dashboard Cite

The analysis of the load distribution between steel and concrete parts of the composite concrete encased I-shaped steel columns subjected to short-term axial load is presented. The variable parameters were: two loading conditions − load scheme I (specimens loaded through the entire cross-section simultaneously), load scheme II (specimens loaded only through the steel profiles protruded from the top end) and concrete class (C25/30 and C40/50). Obtained in the experiment longitudinal strains of both steel and concrete were used to compute the force transferred through the steel and concrete parts of the columns. To provide a reference level for the discussion on the results the analytical solution assuming the perfect bond between steel and concrete, Hooke's law for steel and the Rüsch formula for unconfined concrete were used. The force for which the stress in steel and concrete computed using the strain readings obtained from the experiment starts to deviate from the full bond analytical model predictions can be interpreted as the force for which the loss of adhesive bond occurs. Furthermore on the basis of the equilibrium of the infinitesimal cross section of a column, method for estimating the shear stress at which the debonding occurs is shown. The analysis showed that for columns under the load scheme I composite action of steel and concrete is in effect for the entire load range regardless of the concrete class. For elements under the load scheme II the composite action of both materials is in effect only up to a specific value of the force that changes along the height of the column. Presented method can be applied to composite steelconcrete columns under any configuration of boundary conditions subjected to axial compression. Moreover it can be used to specify the area for which the shear connectors should be provided, to validate constitutive models of shear stressslip behaviour that can be used is FEM analysis and to analyse adhesive bond properties also in columns made of another materials, for example reinforced concrete members strengthened with FRP sheets.

show abstract

Section: Experimental Researchmentioning

confidence: 99%

08.31: Analysis of the load transfer between materials in composite concrete encased steel columns loaded axially

Grzeszykowski

Szmigiera

2017

ce papers

View full text Add to dashboard Cite

show abstract

“…The application of SFRC for various stiff joints of reinforced concrete structures was well known long ago as an effective choice for additional reinforcement in the case of a combined stress state due to its distribution to various chaotic directions (Li 2002;Šalna and Marčiukaitis 2007;Szmigiera 2007;Özcan et al 2009;Chalioris and Karayannis 2009;Brandt 2008). However, the application of steel fibers to load bearing structures has been strictly limited for a long time due to a lack of the regulated methods of analysis.…”

Section: Introductionmentioning

confidence: 98%

A Model for Strength and Strain Analysis of Steel Fiber Reinforced Concrete / Betono, Armuoto Plienine Dispersine Armatura, Stiprio Ir Deformaciju Apskaiciavimo Modelis

Marčiukaitis

Šalna

Jonaitis

et al. 2011

Journal of Civil Engineering and Management

View full text Add to dashboard Cite

The article proposes a model for strength and stain analysis of steel fiber reinforced concrete (SFRC). The model is based on general principles for creating and modelling structural composites and on reinforced concrete code. Differently from other examples, the elastic and plastic properties of the components (concrete and steel) of the introduced model are directly taken into account. The model gives an opportunity to determine tension and compression strength, the elasticity modulus of fiber concrete and the main parameters of its elasticity and plasticity. A good agreement between the obtained results and those of experiments performed by other investigators was confirmed. Differences between the ratios of theoretical and experimental values are insignificant and vary within the limits of 1.06-1.10. This model may be used for the analysis of reinforced concrete members reinforced by steel fibers (SFRC) in a dispersible way assuming stress distribution diagrams.

show abstract

“…Recently new important studies concerning relevant parameters of steel truss chords, concrete slabs and shear connection in composite truss bridges were published (Bouchair et al 2012;Bujnak et al 2013). Other papers substantial for the following studies cover behaviour of shear connectors (Leon 2005;Mirza, Uy 2010;Faggiano et al 2009), complete composite trusses (Marcinkowski, Berkowski 1997;Mujagic et al 2010;Jung et al 2010) and various design aspects (Kravanja, Silih 2003;Szmigiera 2007;Yatim et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Study on Shear Connection of Bridge Steel Truss and Concrete Slab Deck

Macháček

Charvat

2016

Journal of Civil Engineering and Management

View full text Add to dashboard Cite

Longitudinal shear flow in the connection of a bridge steel truss upper chord and a concrete bridge slab is studied both in elastic and plastic stages of loading up to the shear connection collapse. First the distribution of the shear flow with an increasing level of loading is shown as resulted from 3D MNA (materially nonlinear analysis) using ANSYS software package and a former experimental verification. Nevertheless, the flow peaks in elastic stages above truss nodes due to local transfer of forces are crucial for design of the shear connection in bridges. Therefore a simple approximate 2D elastic frame modelling was suggested for subsequent extensive parametric studies. The study covers various loadings including the design loading of bridges and demonstrates importance of rigidity of the shear connection, rigidity of an upper steel truss chord and rigidity of a concrete deck. Temperature effects and a creep of concrete are also studied. The substantial part of the study deals also with concentration of shear connectors in the area of steel truss nodes and influence of the connector densification on distribution of the longitudinal shear along an interface of the steel truss chord and the concrete deck. Eurocode 4 approach and quest to find an optimum design of the shear connection in composite bridge trusses are discussed. Finally the resulting recommendations for a practical design are presented.

show abstract

Influence of Concrete and Fibre Concrete on the Load‐carrying Capacity and Deformability of Composite Steel‐concrete Columns

Cited by 12 publications

References 5 publications

08.31: Analysis of the load transfer between materials in composite concrete encased steel columns loaded axially

08.31: Analysis of the load transfer between materials in composite concrete encased steel columns loaded axially

A Model for Strength and Strain Analysis of Steel Fiber Reinforced Concrete / Betono, Armuoto Plienine Dispersine Armatura, Stiprio Ir Deformaciju Apskaiciavimo Modelis

Study on Shear Connection of Bridge Steel Truss and Concrete Slab Deck

Contact Info

Product

Resources

About