Strength and Axial Behavior of Cellular Lightweight Concrete-Filled Steel Rectangular Tube Columns under Axial Compression

Abstract:

This paper presents the experimental results on the strength and axial behavior of rectangular steel tube columns filled with cellular lightweight concrete (CLC) under axial compression. A total of 24 specimens, including 6 reinforced cellular lightweight concrete (RCLC) columns and 18 cellular lightweight concrete-filled steel tube (CLCFT) columns are investigated. The nominal dimension of the rectangular columns are 150×75 mm in cross-section and 750 mm in height. The parameter used in all tests are the ultimate compressive strengths of the CLC, which are 15 MPa, 20 MPa and 25 MPa, and the wall thicknesses of steel tubes, which are 3.0 mm, 4.5 mm and 6.0 mm. All specimens are prepared and loaded concentrically in axial compression to failure. The results of these tests demonstrated that the CLCFT columns have a linear behavior up to the approximately 80-90% of their maximum compressive load. Then, the behavior of the columns is nonlinear. The nonlinear behaviors are due to the crushing of the concrete core and local wall buckling of the steel hollow tube. In addition, it is found that the CLCFT columns have high axial deformability at the failure when compared to the reference RCLC columns. Finally, by comparing the maximum compressive load of the test results with those obtained from the ACI composite design equation, the comparison results show that calculation formula in ACI code can be applied to compute the axial capacity of CLCFT columns under axial compression.

• Periodical: Materials Science Forum (Volume 941)
• Pages: 2417-2422
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.941.2417
• Online since: December 2018
• Authors: Jaksada Thumrongvut*, Pavarate Tiwjantuk
• Keywords: ACI Design Equation, Axial Compression, Cellular Lightweight Concrete (CLC), Concrete-Filled Tube (CFT) Columns, Rectangular Steel Tube

References

[1] P.C. Hsiao, K.K. Hayashi, R. Nishi, X.C. Lin, M. Nakashima, Investigation of concrete-filled double-skin steel tubular columns with ultrahigh-strength steel, Journal of Structural Engineering, 141(7) (2015) 04014166-1-7.

DOI: 10.1061/(asce)st.1943-541x.0001126

[2] S. Seangatith, J. Thumrongvut, Behaviors of square thin-walled steel tubed RC columns under direct axial compression on RC core, Procedia Engineering, 14 (2011) 513-520.

DOI: 10.1016/j.proeng.2011.07.064

[3] L.H. Han, W. Li, R. Bjorhovde, Developments and advanced applications of concrete-filled steel tubular (CFST) structures: Members, Journal of Constructional Steel Research, 100 (2014) 211-228.

DOI: 10.1016/j.jcsr.2014.04.016

[4] H.S. Saw, J.Y.R. Liew, Assessment of current methods for the design of composite columns in buildings, Journal of Constructional Steel Research, 53(2) (2000) 121-147.

DOI: 10.1016/s0143-974x(99)00062-0

[5] A. Fam, F.S. Qie, S. Riakalla, Concrete-filled steel tubes subjected to axial compression and lateral cyclic loads, Journal of Structural Engineering, 130(4) (2004) 631-640.

DOI: 10.1061/(asce)0733-9445(2004)130:4(631)

[6] P. Gajalakshmi, H. Helena, Behaviour of concrete-filled steel columns subjected to lateral cyclic loading, Journal of Constructional Steel Research, 75 (2012) 55-63.

DOI: 10.1016/j.jcsr.2012.03.006

[7] X. Ji, H. Kang, X. Chen, J. Qian, Seismic behavior and strength capacity of steel tube-reinforced concrete composite columns, Earthquake Engineering & Structural Dynamics, 43(4) (2013) 487-505.

DOI: 10.1002/eqe.2354

[8] V. Patel, Q. Liang, M. Hadi, Numerical analysis of high-strength concrete-filled steel tubular slender beam-columns under cyclic loading, Journal of Constructional Steel Research, 92 (2014) 183-194.

DOI: 10.1016/j.jcsr.2013.09.008

[9] J. Liu, S. Zhang, X. Zhang, L. Guo, Behavior and strength of circular tube confined reinforced-concrete (CTRC) columns, Journal of Constructional Steel Research, 65(7) (2009) 1447-1458.

DOI: 10.1016/j.jcsr.2009.03.014

[10] B. Uy, Strength of short concrete filled high strength steel box columns, Journal of Constructional Steel Research, 57(2) (2001) 113-134.

DOI: 10.1016/s0143-974x(00)00014-6

[11] G. Giakoumelis, D. Lam, Axial capacity of circular concrete-filled tube columns, Journal of Constructional Steel Research, 60(7) (2004) 1049-1068.

DOI: 10.1016/j.jcsr.2003.10.001

[12] T. Ishizawa, T. Nakano, M. Iura, Experimental study on partially concrete-filled steel tubular columns, Steel and Composite Structures, 6(1) (2006) 55-69.

DOI: 10.12989/scs.2006.6.1.055

[13] B. Chen, X. Liu, S.J. Li, Performance investigation of square concrete-filled steel tube columns, Journal of Wuhan University of Technology-Mater. Sci. Ed., 26(4) (2011) 730-736.

DOI: 10.1007/s11595-011-0302-5

[14] M. Dundu, Compressive strength of circular concrete filled steel tube columns, Thin-Walled Structures, 56 (2012) 62-70.

DOI: 10.1016/j.tws.2012.03.008

[15] Y. Lu, N. Li, S. Li, H. Liang, Behavior of steel fiber reinforced concrete-filled steel tube columns under axial compression, Construction and Building Materials, 95 (2015) 74-85.

DOI: 10.1016/j.conbuildmat.2015.07.114

[16] C. Bing, W. Zhen, L. Ning, Experimental research on properties of high-strength foamed concrete, Journal of Materials in Civil Engineering, 24(1) (2012) 113-118.

DOI: 10.1061/(asce)mt.1943-5533.0000353

[17] American Concrete Institute. Building Code Requirements for Structural Concrete and Commentary (ACI 318-11). Detroit, Michigan, (2011).

[18] J. Thumrongvut, S. Seangatith, T. Siriparinyanan, S. Wangrakklang, An experimental behaviour of cellular lightweight concrete-filled steel square tube columns under axial compression, Materials Science Forum, 860 (2016) 121-124.

DOI: 10.4028/www.scientific.net/msf.860.121