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From slabs, walls and footings to foundations and infrastructure projects, over the past two decades, Helix® Micro Rebar™ has been proven in the field.

Crimped Steel Fiber blended with multi-length monofilament micro-synthetic fibers View Item For over a century, The Euclid Chemical Company has served the global building market as a worldwide quality supplier of specialty products and technical support services for the concrete and masonry construction industry. Plain concrete and steel ber reinforced concrete (SFRC) cylinder specimens are modeled in the nite element (FE) platform of ANSYS. And validated with the experimental results and failure patterns. I need Papers and previous work that may help in modeling High Performance Reinforced Concrete with Polypropylene fibers in ANSYS 15 Software. I want to model a concrete beam containing steel. This paper presents a numerical investigation of the mechanical performance and ductility of concrete beams reinforced by both fiber-reinforced polymer (FRP) and steel tension reinforcement. Three-dimensional (3D) finite element (FE) analysis of beams with both FRP and steel reinforcement was conducted by first using ANSYS to verify the reliability.

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Rose Acre Farms offers commodity eggs, specialty eggs including cage-free varieties, liquid eggs, dried eggs, and egg protein powder.

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The Villages of Indigo Green on St. Maarten are located in one of the most desirable destinations of the Caribbean.

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Pier 57 is a Seattle waterfront location favored by tourists and locals. It was lengthened to construct a 156 ft diameter Ferris wheel which opened in 2012. Helix® Micro Rebar™ reinforcement was incorporated into the project design to fully replace the #6 rebar cages inside 53 piles.

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DOI:

https://doi.org/10.11113/jt.v61.1771

Keywords:

Composite columns, steel tube, finite element, steel fibers, slenderness ratio

Abstract

The present study investigates the behavior of steel fiber reinforced concrete filled steel box columns (SFRCFSBC) targeting to enhance their strength. A nonlinear finite element model using ANSYS program has been developed to investigate the structural behavior of the inspected columns. The results obtained from that model has been compared with those calculated using Euro code (EC4), AISC/LRFD (2005) and the Egyptian Code of Practice for Steel Construction (ECPSC/LRFD 2007). The comparison indicated that the results of the model have been evaluated to an acceptable limit of accuracy. A parametric study was carried out to investigate the effect of wall thickness, column slenderness and percentage of steel fiber in concrete on the ultimate strength of composite columns. Confinement of the concrete core provided by the steel case was also investigated. It can be concluded from the results that a considerable increase in compressive and flexural strength may be gained by increasing the steel fiber percentage up to 4%. The highest rate of increase in strength for long columns was about 20% by using steel fiber percentage between 0.5% and 1.0%, while for short and medium columns was about 10% by using steel fiber percentage between 1% and 2%.

References

Mursi, M. and Uy, B. 2003. Strength of Concrete Filled Steel Box Columns Incorporating Interaction Buckling. Journal of Structural Engineering, ASCE. 129(5): 626–639.

Mursi, M. and Uy, B. 2004. Strength of Slender Concrete Filled High Strength Steel Box Columns. Journal of Constructional Steel Research. 60: 1825–1848.

Schneider, S. P. 1998. Axially Loaded Concrete-Filled Steel Tubes. Journal of Structural Engineering, ASCE. 124(10): 1125–1138.

Euro code 4. 2004 Design of Composite Steel and Concrete Structures. Part 1.1, General Rules and Rules for Buildings (with UK national application document), DD ENV 1994-1-1. London (UK): British Standards Institution.

ANSI/AISC, 360-05. 2005 Specifications for Structural Steel Buildings (ASD/LRFD). Chicago, Illinois.

Egyptian Code of Practice for Steel Construction. 2007. LRFD, (Load and Resistance Factor Design).

Abdullah, S. 2012. Structural Behavior of Fiber Reinforced Concrete Filled Steel Box Columns. M.Sc. Thesis, Faculty of Engineering at Shoubra, Benha University, Egypt. 120.

ANSYS Verification Manual, Release 12.0. ANSYS, Inc. 2009. United States.

Mander, J. B., Priestley, M. J. N., and Park, R. 1988. Theoretical stress–Strain Model for Confined Concrete. Journal of Structural Engineering, ASCE. 114(8): 1804–1826.

Hu, H. T., Huang, C. S., Wu, M. H., and Wu, Y. M. 2003. Nonlinear Analysis of Axially Loaded Concrete-filled Tube Columns with Confinement Effect. Journal of Structural Engineering, ASCE. 129(10): 1322–1329.

Richart, F. E., Brandzaeg, A., and Brown, R. L. 1928. A Study Of The Failure of Concrete Under Combined Compressive Stresses. Bull. 185. Champaign (IL, USA): University of Illinois Engineering Experimental Station.

ACI. 1999. Building Code Requirements For Structural Concrete and Commentary. ACI 318-99. Detroit (USA): American Concrete Institute.

Saenz, L. P. 1964. Discussion of „Equation for the Stress–strain Curve of Concrete by P. Desayi, and S. Krishnan. Journal of the American Concrete Institute. 61: 1229–1235.

Hu, H. T., and Schnobrich, W. C. 1989. Constitutive Modeling of Concrete by Using Non-Associated Plasticity. Journal of Materials in Civil Engineering. 1(4):199–216.

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