Experimental and Numerical Investigation of Octagonal Partially Encased Composite Columns Subject to Axial and Torsion Moment Loading

Mehdi Ebadi Jamkhaneh, Mohammad Ali Kafi

Abstract


This paper includes experimental and numerical study of the octagonal partially encased composite (PEC) columns specimens under axial and torsion loading. The major difference between them was the concrete reinforcement details. The parameters investigated in the experimental and numerical study were the type of reinforcement details, the failure mode, width-to-thickness ratio of flange, transverse links spacing and diameter. The results were presented as load-deformation curves. Numerical model was validated using finite element method and the results indicated acceptable accuracy with tests results in the form of capacity and ductility. In the analytical phase, the experimental results in the compressive loading were compared with those obtained from CSA S16-14 and EN 1994-1-1 equations. Also, the new concrete confinement factor in proportion to the web width to thickness ratio was presented to octagonal PEC columns under pure compressive load. Furthermore, different types of retrofit of cross-shaped steel column including concrete encasement, use of stiffener plates and transverse links were investigated in this research. Results revealed that concrete confinement and use of transverse links had respectively the most and the least effect on increasing torsional capacity of the specimens.


Keywords


Octagonal Partially Encased Composite Column; Failure Mode; Experimental Model; Finite Element Method; Load Bearing Capacity; Torsional Stiffness.

References


Shafaei, Soheil, Amir Ayazi, and Farhang Farahbod. "The effect of concrete panel thickness upon composite steel plate shear walls." Journal of Constructional Steel Research 117 (2016): 81-90.

Rassouli, Behnoosh, Soheil Shafaei, Amir Ayazi, and Farhang Farahbod. "Experimental and numerical study on steel-concrete composite shear wall using light-weight concrete." Journal of Constructional Steel Research 126 (2016): 117-128.

Oyawa, Walter O., N. K. Githimba, and G. N. Mang'urio. "Structural response of composite concrete Filled plastic tubes in compression." Steel and Composite Structures 21, no. 3 (2016): 589-604.

Andalib, Z., Kafi, M.A., Kheyroddin, A., Bazzaz, M. " Experimental investigation of the ductility and performance of steel rings constructed from plates" Journal of Constructional Steel Research, 103 (2014): 77-88.

Chicoine, T., Tremblay, R., Massicotte, B., Ricles, J., Lu, L.W. "Behaviour and strength of partially encased composite columns with built up shapes" Journal of Structural Engineering, 128(3) (2002): 279-288.

Chicoine, T., Massicotte, B., Tremblay, R. "Finite element modelling and design of partially encased composite columns" Steel and Composite Structures, An International Journal, 2(3) (2002): 171-194.

Begum, M., Driver, R.G., Elwi, A.E. "Finite element modeling of partially encased composite columns using the dynamic explicit solution method" Journal of Structural Engineering,133(3) (2007): 326–34.

Begum, Mahbuba, Robert G. Driver, and Alaa E. Elwi. "Behaviour of partially encased composite columns with high strength concrete." Engineering Structures 56 (2013): 1718-1727.

Begum, M., Driver, R., Elwi, A.E. "Parametric study on eccentrically-loaded partially encased composite columns under major axis bending" Steel and Composite Structures, An International Journal, 19(5) (2015): 1299-1319.

Chen, Y., Wang, T., Yang, J., Zhao, X. "Test and numerical simulation of partially encased composite columns subject to axial and cyclic horizontal loads" International Journal of Steel Structures, 10(4) (2010): 385–393.

Zhao, Gen Tian, and Chao Feng. "Axial Ultimate Capacity of Partially Encased Composite Columns." In Applied Mechanics and Materials, vol. 166, pp. 292-295. Trans Tech Publications, 2012.

Dastfan, M., Driver, R. "Large-scale test of a modular steel plate shear wall with partially encased composite columns" Journal of Structural Engineering, 142(2) (2016): 04015142.

Pereira, F.M., De Nardin, S., El Debs, L.H.C. "Structural behaviour of partially encased composite columns under axial loads" Steel and Composite Structures, An International Journal, 20(6) (2016): 1305-1322.

Song, Y.C., Wang, R.P., Li, J. " Local and post-local buckling behaviour of welded steel shapes in partially encased composite columns" Thin-Walled Structures, 108 (2016): 93–108.

Ebadi Jamkhaneh, M., Kafi, M.A., Kheyroddin, A. “Experimental and numerical investigations of partially encased composite columns under axial load.” Journal of Structural and Construction Engineering (JSCE), (in persian) (2017), DOI: 10.22065/JSCE.2017.92721.1264.

CSA, CSA S16–14, Limit States Design of Steel Structures. Canadian Standards Association, (2014) Mississauga, Ontario.

ACI Committee 318, Building Code Requirements for Structural Concrete (ACI 318-08) and Commentary (ACI 318R-08). (2008) Farmington Hills, MI: ACI.

ACI, ACI 363R-92, State-of-the-art report on high-strength concrete (reapproved in 1997). American Concrete Institute, (1997) Farmington Hills, MI.

ASTM, A370-03, Standard test methods and definitions for mechanical testing of steel products. (2003) American Society for Testing and Materials, Philadelphia, PA.

Eurocode 4. Design of composite steel and concrete structures, Part 1-1: General rules and rules for buildings.

Han, L-H. "Tests on stub columns of concrete-filled RHS sections." Journal of Constructional Steel Research 58, no. 3 (2002): 353-372.

Hibbitt, Karlsson and Sorensen, Inc., ABAQUS User's Manuals, Version 6.13.1. Rhode Island, USA, 2013.

Hsu, L.S., Hsu, C.T.T. “Complete stress-strain behaviour of high-strength concrete under compression” Magazine of Concrete Research, 46(169) (1994): 301-312.

Nayal, R., Rasheed, H.A. “Tension stiffening model for concrete beams reinforced with steel and FRP bars” Journal of Materials in Civil Engineering, 18(6) (2006): 831-841.


Full Text: PDF

DOI: 10.28991/cej-030927

Refbacks

  • There are currently no refbacks.




Copyright (c) 2017 Mehdi Ebadi Jamkhaneh, Mohammad Ali Kafi

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
x
Message