- Experimental investigation on the behaviour of concrete-filled steel columns
- P. Gajalakshmi ; H. Jane ; R.S. Raghavan
- Asian Journal of Civil Engineering (Building and Housing), Vol. 12, No. 6, pages 691-701.
- Book Title / Journal:
- Year: 2011 , Volume: , Series:
- Structure types ; Composite structures
PDF |
- Application of polypropylene nonwoven fabrics for cement composites reinforcement
- H. Pakravan ; M. Jamshidi ; M. Latifi ; M. Neshastehriz
- Asian Journal of Civil Engineering (Building and Housing), Vol. 12, No. 5, pages 551-562.
- Book Title / Journal:
- Year: 2011 , Volume: , Series:
- Structure types ; Composite structures
PDF |
- Experimental evaluation of thin composite floor assemblies under fire loading
- E.I. Wellman ; A.H. Varma ; R. Fike ; V. K. R. Kodur
- ASCE Journal of Structural Engineering, Vol. 137, No. 9, pp. 1002-1016
- Book Title / Journal:
- Year: 2011 , Volume: , Series:
- Structure types ; Composite structures
PDF |
- Experimental evaluations of composite floor assemblies under fire loading
- P. Pakala ; A.H. Varma ; R. Fike ; V. K. R. Kodur ; E.I. Wellman
- Proceedings of the Annual Structural Concrete, ASCI, Reston, VA, pages 451-462
- Book Title / Journal:
- Year: 2011 , Volume: , Series:
- Structure types ; Composite structures
PDF |
- On the interaction of partial interaction and shrinkage in composite steel-concrete t-beams
- M. Bradford
- Book Title / Journal: Procedia Engineering
- Year: 2011 , Volume: Vol.14 , Series:
- Structure types ; Composite structures
- Description
- The use of composite beams of steel and concrete joined by shear connectors goes back well over half a century, and they are now ubiquitous civil engineering structures. Their populaarity and efficiency derive from the fact that the concrete carries compression and the steel carries tension, thereby making best use of the two materials to enhance the strength and stiffness of the beam when the concrete slab is joined mechanically to the steel girder. Without considering long-term shrinkage and creep effects in the concrete, Newmark, Siess and Viest deriived the classic partial interaction solution in 1951, quantifying the increase in beam's stiffness as the stiffness of the mechanical shear connection increases; the solution being represented with hyperbolic trigonometric functions. With no shear connection between the concrete and steel, the deflection of the beam is based on the flexural stiffness of the two materials alone and any uniform shrinkage deformations of the slab will have no effect on the lateral deflection of the beam. On the other hand, if the shear connection between tthe concrete and steel is infinitely stiff, uniform shrinkage of the slab whose lever arm is eccentric the centroid of the transformed cross-section may lead to considerable shrinkage-based deformations, thereby negating the stiffening effects of the fully-composite action. In theory, a fully-composite beam may deflect more than one without any composite action because of shrinkage-based slab deformations. Using a rational technique based on virtual work, the paper presents a solution for a composite beam with elastic shear connection subjected to slab shrinkage deformations. Its focus is on identifying the competing and coupled influences of stiff partial interaction in reducing deformations, and high shrinkage deformations in causing beam deformations. The solutions may be used to optimise beam deformations, being suitable for deesign.
PDF |
- Three-dimensional fe modelling of simply-supported and continuous composite steel-concrete beams
- F. Tahmasebinia ; G. Ranzi
- Book Title / Journal: Procedia Engineering
- Year: 2011 , Volume: Vol. 14 , Series:
- Structure types ; Composite structures
- Description
- Composite steel-concrete beams represent an economic form of construction used in both building and bridge applications. The composite action is usually provided by the presence of shear connectors welded to the top of the steel joist and embedded in the concrete slab. The flexural response is strongly dependent on the rigidity provided by these connectors. Initial studies in this area highlighted that their deformability needs to be evaluated and included in the modeling for an accurate structural representation. For this purpose, different types of push-out tests have been proposed to date to describe the load-slip relationships of shear connectors. These relationships are usually used in numerical simulations when modeling experimental tests or performing parametric studies. In this context, the finite element model proposed in this paper intends to provide a representation of the composite behaviour of floor beams without the need to rely on constitutive relationships obtained from push-out tests. The model is validated against experimental results available in the open literature carried out using simply-supported and continuous static configurations and based on composite beams with solid and composite slabs.
PDF |
- Behaviors of square thin-walled steel tubed RC columns under direct axial compression on RC core
- S. Seangatith ; J. Thumrongvut
- Book Title / Journal: Procedia Engineering
- Year: 2011 , Volume: Vol.14 , Series:
- Structure types ; Composite structures
- Description
- This paper presents an experimental study on the behaviors and modes of failure of square thin-walled steel tubed RC columns subjected to concentrically axial load applied directly to the RC core. The main variables were the compressive strengths of the concrete, the wall thicknesses of the steel tube and the tie spacing. The dimensions of the column specimens were 150 mm wide and 750 mm long. A total of 36 specimens, including 24 tubed RC specimens and 12 RC specimens, were tested. It was found that the tubed RC columns have a linear elastic behavior up to approximately 60-70% of their axial compressive capacity. Then, the behavior of the columns is gradually nonlinear and can be classified into 3 types: strain hardening, elastic-perfectly plastic and strain-softening. The mode of failure of the columns is in progressive mode with very large axial deformability. The wall thickness of the steel tube and the compressive strength of concrete are the major factors, influencing the behaviors, axial compressive capacity and modes of failure of the columns. No full interaction and confinement between the RC core and the steel tube were observed and the EC4 design equations for the composite column significantly overestimate the axial compressive capacity of the tubed RC column.
PDF |
- Displacement-based Assessment of Chinese Steel Reinforced Composite Concrete Buildings
- Y. Si
- Msc Thesis, Istituto Universitario di Studi Superiori di Pavia Universita degli Studi di Pavia
- Book Title / Journal:
- Year: 2009 , Volume: , Series:
- Structure types ; Composite structures
PDF |
- Headed steel stud anchors in composite structures: part II - tension and interaction.
- L. Pallarés ; J.F. Hajjar
- Newmark Structural Engineering Laboratory Report Series 014, Newmark Structural Engineering Laboratory, University of Illinois at Urbana-Champaign.
- Book Title / Journal:
- Year: 2009 , Volume: , Series:
- Structure types ; Composite structures
PDF |
- Headed steel stud anchors in composite structures: part I - shear.
- L. Pallarés ; J.F. Hajjar
- Newmark Structural Engineering Laboratory Report Series 013, Newmark Structural Engineering Laboratory, University of Illinois at Urbana-Champaign.
- Book Title / Journal:
- Year: 2009 , Volume: , Series:
- Structure types ; Composite structures
PDF |
- Simplified Inverse Method for Determining the Tensile Properties of Strain Hardening Cementitious Composites (SHCC)
- S. Qian ; V.C. Li
- Journal of Advanced Concrete Technology, Vol.6, No.2, pp. 353-363. Japan Concrete Institute
- Book Title / Journal:
- Year: 2008 , Volume: , Series:
- Structure types ; Composite structures
PDF |
- Durable and Sustainable overlay with ECC
- S. Qian ; H. Zhang ; G.A. Keoleian ; V.C. Li
- Proceedings of the 9th International Conference on Concrete Pavements, San Fransisco, California
- Book Title / Journal:
- Year: 2008 , Volume: , Series:
- Structure types ; Composite structures
PDF |
- A synopsis of studies of the monotonic and cyclic behavior of concrete-filled steel tube beam-columns.
- B.C. Gourley ; C. Tort ; M.D. Denavit ; J.F. Hajjar ; P.H. Schiller
- Report No. NSEL-008, Newmark Structural Laboratory Report Series, Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois
- Book Title / Journal:
- Year: 2008 , Volume: , Series:
- Structure types ; Composite structures
PDF |
- Technical design of composite steel beams for bridges.
- J.A. Yura ; M. Engelhardt ; E.R. Methvin
- Report No. FHWA/TX-08/0-4811-1, Center for Transportation Research, the University of Texas at Austin
- Book Title / Journal:
- Year: 2008 , Volume: , Series:
- Structure types ; Composite structures
PDF |
- Limit state response of composite columns and beam columns: part ii. application of design provisions for the 2005 AISC specification.
- R. Leon ; J.F. Hajjar
- Engineering Journal, AISC, Vol. 45, No. 1, First Quarter, pages 21-46
- Book Title / Journal:
- Year: 2008 , Volume: , Series:
- Structure types ; Composite structures
PDF |
