Vol. 14, No. 3, pp. 424-437(2018)
INTERFACE BOND BEHAVIOUR BETWEEN CIRCULAR
STEEL TUBE AND LIGHTWEIGHT AGGREGATE CONCRETE
Z.Q. Fu1, H.B. Ge2,*, B.H. Ji1 and J.J. Chen1
1 School of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China
2 Department of Civil Engineering, Meijo University, Nagoya 468-8502, Japan
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 19 December 2016; Revised: 22 July 2017; Accepted: 19 November 2017
DOI:10.18057/IJASC.2018.14.3.7
View Article | Export Citation: Plain Text | RIS | Endnote |
ABSTRACT
To ascertain the nature of the interface bond behaviour of lightweight aggregate concrete-filled steel tubes (LACFSTs), 27 specimens were tested by push-out loading and four of them were subjected to repeated push-out loading. Influence factors such as lightweight aggregate concrete strength, concrete vibration and curing method, steel surface conditions, slenderness ratio, and diameter-to-thickness ratio were considered. The bond slip process and strength were analysed and a formula was proposed to calculate the bond strength of the LACFSTs. The results show that the bond-slip curve can take one of two forms: one with an obvious peak, the other without, and each one manifests three different trends after reaching ultimate load. According to the test results, the bond strength is independent of the lightweight aggregate concrete strength. Higher diameter-to-thickness ratios cause a reduction in the bond strength. A good quality of concrete vibration and curing can improve the bond strength. The bond strength after the first of the repeated push-out tests is the largest. In the same push-out direction, the bond strength decreases as the push-out time increases, and the load-slip curves are similar among all samples tested. The comparisons between test results and calculations show that the proposed formula has a good accuracy.
KEYWORDS
Lightweight aggregate concrete, concrete-filled steel tube, push-out test, bond strength, bond-slip
REFERENCES
[1] Chen, B.C. and Wang, T.L., “Overview of Concrete Filled Steel Tube Arch Bridges in China”, Practice periodical on structural design and construction, 2009, Vol.14, No.2, pp. 70-80.
[2] Xu, T., Xiang, T., Zhao, R., and Zhan, Y., “Nonlinear Finite Element Analysis of Circular Concrete-Filled Steel Tube Structures”, Structural Engineering and Mechanics, 2010, Vol.35, No.3, pp.315-333.
[3] Morino, S., and Tsuda, K., “Design and Construction of Concrete-Filled Steel Tube Column System in Japan”, Earthquake Engineering and Engineering Seismology, 2002, Vol.4, No.1, pp. 51-73.
[4] Han, L.H., Hou, C.C., and Wang, Q.L., “Behavior of Circular CFST Stub Columns under Sustained Load and Chloride Corrosion”, Journal of Constructional Steel Research, 2014, Vol.103, pp.23-36.
[5] Ge, H.B., Susantha, K.A.S., Satake, Y. and Usami T., “Seismic Demand Predictions of Concrete-filled Steel Box Columns”, Engineering Structures, 2003, Vol.25, No.3, pp. 337-345.
[6] Zhou, X., Yan, B., and Liu, J., “Behavior of Square Tubed Steel Reinforced-Concrete (SRC) Columns under Eccentric Compression”, Thin-Walled Structures, 2015, Vol. 91, pp.129-138.
[7] Assi, I.M., Qudeimat, E.M., and Hunaiti, Y.M., “Ultimate Moment Capacity of Foamed and Lightweight Aggregate Concrete-Filled Steel Tubes”, Steel and Composite Structures, 2003, Vol.3, No.3, pp.199-212.
[8] Fu, Z.Q., Ji, B.H., Lv, L., and Zhou, W.J., “Behavior of Lightweight Aggregate Concrete Filled Steel Tubular Slender Columns under Axial Compression”, Advanced Steel Construction, 2011, Vol.7, No.2, pp.144-156.
[9] Sohel, K.M.A., Liew, J.R., and Koh, C.G., “Numerical Modelling of Lightweight Steel-Concrete-Steel Sandwich Composite Beams Subjected to Impact”, Thin-Walled Structures, 2015, Vol. 94, pp.135-146.
[10] Mossahebi, N., Yakel, A., and Azizinamini, A., “Experimental Investigation of a Bridge Girder Made of Steel Tube Filled with Concrete”, Journal of Constructional Steel Research, 2005, Vol.61, No.3, pp.371-386.
[11] Dai, J.G., Tamon, U. and Yasuhiko, S., “Development of the Nonlinear Bond Stress–Slip Model of Fiber Reinforced Plastics Sheet–Concrete Interfaces with a Simple Method”, Journal of Composites for Construction, 2005, Vol.9, No.1, pp.52-62.
[12] Roeder, C.W., Cameron, B., and Brown, C.B., “Composite Action in Concrete Filled Tubes”, Journal of Structural Engineering, 1999, Vol.125, No.5, pp.477-484.
[13] Tao, Z., Song, T.Y., Uy, B., and Han, L.H., “Bond Behavior in Concrete-Filled Steel Tubes”, Journal of Constructional Steel Research, 2016, Vol.120, pp.81-93.
[14] Al-Mosawe, A., Al-Mahaidi, R., and Zhao, X.L., “Bond Behaviour between CFRP Laminates and Steel Members under Different Loading Rates”, Composite Structures, 2016, Vol.148, pp.236-251.
[15] Xie, T., and Ozbakkaloglu, T., “Behavior of Recycled Aggregate Concrete-Filled Basalt and Carbon FRP Tubes”, Construction and Building Materials, 2016, Vol.105, pp.132-143..
[16] Tahir, M.M., Shek, P.N., and Tan, C.S., “Push-off Tests on Pin-connected Shear Studs with Composite Steel–Concrete Beams”, Construction and Building Materials, 2009, Vol. 23, No.9, pp. 3024-3033.
[17] Chen, L., Dai, J., Jin, Q., Chen, L., and Liu, X., “Refining Bond–Slip Constitutive Relationship between Checkered Steel Tube and Concrete”, Construction and Building Materials, 2015, Vol.79, pp.153-164.
[18] Yan, J.B., Liew, J.R., Sohel, K.M.A. and Zhang, M.H., “Push-out Tests on J-hook Connectors in Steel–Concrete–Steel Sandwich Structure”, Materials and Structures, 2014 , Vol.47, No.10, pp.1693-1714.
[19] Chen, Y., Feng, R., Shao, Y., and Zhang, X., “Bond-slip behaviour of concrete-filled stainless steel circular hollow section tubes”, Journal of Constructional Steel Research, 2017, Vol.130, pp. 248-263.
[20] Abendeh, R., Ahmad, H. S., and Hunaiti, Y. M., “Experimental studies on the behavior of concrete-filled steel tubes incorporating crumb rubber”, Journal of Constructional Steel Research, 2016, Vol. 122, pp. 251-260.
[21] Aly, T., Elchalakani, M., Thayalan, P., and Patnaikuni, I., “Incremental collapse threshold for pushout resistance of circular concrete filled steel tubular columns”, Journal of Constructional Steel Research, 2010, Vol. 66, No. 1, pp. 11-18.
[22] Qu, X., Chen, Z., Nethercot, D. A., Gardner, L., and Theofanous, M., “Load-reversed push-out tests on rectangular cfst columns”, Journal of Constructional Steel Research, 2013, Vol. 81, No. 3, pp. 35-43.
[23] PetrusClotilda, Hamidhanizah, A., IbrahimAzmi, and Davylyn, N. J., “Bond strength in concrete filled built-up steel tube columns with tab stiffeners”, Canadian Journal of Civil Engineering, 2011, Vol. 38, No. 6, pp. 627-637.
[24] Nezamian, A., Almahaidi, R., and Grundy, P., “Bond strength of concrete plugs embedded in tubular steel piles under”, Canadian Journal of Civil Engineering, 2006, Vol. 33, No. 2, pp. 111-125.
[25] Xu, C., Huang, C., Jiang, D., and Song, Y., “Push-out test of pre-stressing concrete filled circular steel tube columns by means of expansive cement”, Construction & Building Materials, 2009, Vol. 23, No. 1, pp. 491-497.
[26] Mouli, M., and Khelafi, H., “Strength of short composite rectangular hollow section columns filled with lightweight aggregate concrete”, Engineering Structures, 2007, Vol. 29, No. 8, pp. 1791-1797.
[27] Eurocode 4. Design of composite steel and concrete structures. Part 1-1: General rules and rules for buildings, BSI. 2004.
[28] AASHTO. “AASHTO-LRFD Bridge design guide specifications for GFRP-reinforced concrete bridge decks and traffic railings.” American Association of State Highway and Transportation Officials, Washington, DC. 2009.
[29] “Recommendations for design and construction of concrete filled steel tubular structure”, Tokyo: Architectural Institute of Japan. 1997.
[30] CECS 28 : 2012, “Technical specification for concrete-filled steel tubular structures”, The Engineering Construction Association of China, 2012. (In Chinese)
[31] GB/T228-2002, “Metallic Materials-Tensile Testing at Ambient Temperature”, The National Standard of China, 2002. (In Chinese)
[32] Virdi, K. S., “Bond Strength in Concrete Filled Steel Tubes”, Int. Assoc. for Bridge & Structural Engineering, 1980, Vol.3, pp.125-139.
[33] Liu, Y.J., Liu, J.P., and Chi, J.J., “Shear Bond Behaviors at Interface of Concrete-Filled Steel Tube”, Journal of Guangxi University (Natural Science Edition), 2010, Vol.35, No.1, pp. 17-23. (In Chinese)
[34] Shakir-Khalil, H., “Pushout Strength of Concrete-Filled Steel Hollow Section Tubes”, The Structural Engineering, 1993, Vol.71, No.13, pp.230-233.
[35] Xue, L.H., and Cai, S.H., “Bond Strength at the Interface of Concrete-Filled Steel Tubular Columns: part I”, Building Science, 1996, Vol.12, No.3, pp.22-8. (In Chinese)
[36] Xue, L.H., and Cai, S.H., “The Influence of Load Eccentricity on Bond Strength at the Interface of Concrete-Filled Steel Tube Columns”, Building Science, 1997, Vol.13, No.2, pp.22-25. (In Chinese)
[37] Xu, J.J., Chen ,Z.P., Xue, J.Y., and SU, Y.S., “Failure Mechanism of Interface Bond Behavior Between Circular Steel Tube and Recycled Aggregate Concrete by Push-out Test”, Journal of Building Structures, 2013, Vol.34, No.7, pp.148-157. (In Chinese)
[38] Fu, Z.Q., Ji, B.H., Zhou, Y., and Wang, X.L., “An Experimental Behavior of Lightweight Aggregate Concrete Filled Steel Tubular Stub under Axial Compression”, In GeoHunan Int. Conf., 2011, pp.24-32.