Model-Based Analysis for Ultimate Axial Load of Circular CFST Columns Using Artificial Neural Network

Document Type : پژوهشی

Authors

• M.H Yaqoubi ¹
• Behrooz Keshtegar ¹
• H.A Rahdar ²

¹ Univrsity of Zabol

² Uonivercity of Zabol

10.22067/civil.v32i3.73399

Abstract

Concrete-filled steel tube (CFST) columns are increasingly adopted in many modern structures due to the advantage composite action between steel tube and concrete core. The almost empirical models and design code relations can not provide the accurate predictions for the axial ultimate strength of these composite steel-concrete sections, especially high (ultra-high) strength concrete. In this paper, a novel predicted model of the ultimate axial strength was introduced based on Artificial Neural Network (ANN) using a large experimental data set more 1168 sample data on CFST. The predicted results of the developed ANN model were compared with eight empirical newest models and EC4 code relations using several error statistics. The ANN predictions are more accurate than the existing (code design) models and covers a wider range of material strengths and the ratio of diameter to thickness and height to diameter.
 

Keywords

• Concrete-filled steel tube
• Axial ultimate strength
• Artificial neural network
• Modeling

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References

1. Uy, B., "Strength of short concrete filled high strength steel box columns", J. Constr. Steel Res, Vol. 57(2), pp. 113-134, (2001).

2. Han, L.H., "Flexural behaviour of concrete-filled steel tubes", Journal of Constructional SteelResearch,Vol. 60(2), pp. 313-337, (2004).

3. Bradford, M.A., Loh, H.Y. and Uy, B., "Slenderness limits for filled circular steel tubes", Journal of Constructional Steel Research, Vol. 58(2), pp. 243-252, (2002).

4. Tang, Y.Q., Zhou, Z.H. and Chan, S.L., "An accurate curved beam element based on trigonometrical mixed polynomial function", InternationalJournal of Structural Stability and Dynamics, Vol. 13(4), pp. 1-19, (2013).

5. Lai, M.H. and Ho, J.C.M., "Confinement effect of ring-confined concrete-filled-steel-tube columns under uni-axial load", Engineering Structures, Vol. 67, pp.123-141, (2014).

6. Uy, B. and Das, S., "Wet concrete loading of thin-walled steel box columns during the construction of a tall building", Journal of Constructional Steel Research, Vol. 42(2), pp. 95-119, (1997).

7. Lai, M.H. and Ho, J.C.M., "An analysis-based model for axially loaded circular CFST columns", Thin-Walled Structures, Vol. 119, pp. 770-781, (2017).

8. EC4., "Design of composite steel and oncretestructures",Part 1-1: General rules and rules for buildings., En-1994-1-1., European committee for tandardization: British Standards Institution, (2004).

9. Dong, C.X., Kwan, A.K.H. and Ho, J.C.M., "Effects of external confinement on structural performance of

concrete-filled steel tubes", Journal of Constructional Steel Research,Vol.132, pp. 72-82, (2017).

10. Xiong, M.X., Xiong, D.X. and Liew, J.Y.R., "Axial performance of short concrete filled steel tubes with high- and

ultra-high- strength materials", Engineering Structures,Vol.136, pp. 494-510, (2017).

11. Lai, M.H. and Ho, J.C.M., "Confinement effect of ring-confined concrete-filled-steel-tube columns under uni-axial load", Engineering Structures, Vol. 67, pp. 123-141, (2014).

12. Yu, M., Zha, X. and Li, Y., "A unified formulation for circle and polygon concrete-filled steel tube columns under axial compression", Engineering Structures, Vol. 49, pp. 1-10, (2013).

13. Lu, Z.H. and Zaho, Y.G., "Suggested empirical models for the axial capacity of circular CFT stub columns", Journal of Constructional Steel Research, Vol. 66, pp. 850-862, (2010).

14. Hatzigeorgiou, G.D., "Numerical model for the behavior and capacity of circular CFT columns", Part II: Verification and extension, Engineering Structures, Vol. 30, pp. 1579-1589, (2008).

15. Chinese Code CECS., "Technical specification for cocnrete-filled steel tubular structures", In CECS 28: 2012, Beijing, China: China Planning Press, (2012).

16. ACI. "Building code requirements for structuralconcrete (ACI318-99)", Detroit (MI): American concrete institute (ACI), (1999).

17. Chinese Code DLT., "Chinese design code for steel-concrete composite structures", In: DLT 5085-1999, Beijing, China: Chinese Electricity Press, (1999).

18. Mander, J.B., Priestley, M.J.N. and Park, R., "THEORETICAL STRESS-STRAIN MODEL FOR CONFINED CONCRETE", J. Struct. Eng, Vol. 114, pp. 1804-1826, (1988).

19. Lai, M.H. and Ho, J.C.M., "A theoretical axial stress-strain model for circular concrete-filled-steel-tube columns", Engineering Structures, Vol. 125, pp. 124-125, (2016).

20. Kwan, A.K.H., Dong, C.X. and Ho, J.C.M., "Axial and lateral stress–strain model for concrete-filled steel tubes", Journal of Constructional Steel Research,Vol.122, pp. 421-433, (2016).

21. Wang, Y., Chen, P. and Zhang, Y., "Size effect of circular concrete-filled steel tubular short columns subjected to

axial compression", Thin-Walled Structures, Vol. 120, pp. 397-407, (2017).

22. Wang, W., Ma, H., Li, Z. and Tang, Z., "Size effect in circular concrete-filled steel tubes with different diameter-to-thickness ratios under axial compression", Engineering Structures, Vol. 151, pp. 554-567, (2017).

23. Ding, F.X., Liu, J., Liu, X.M., Yu, Z. W. and Li, D.W., Zhang, Y., "Mechanical behavior of circular and square concrete filled steel tube stub columns under local compression", Thin-Walled Structures, Vol. 94, pp. 155-166, (2015).

24. Dundu, M., "Compressive strength of circular concrete filled steel tube columns", Thin-Walled Structures, Vol. 56, pp. 62-70, (2012).

25. Liang, Q.Q. and Fargomeni, S., "Nonlinear analysis of circular concrete-filled steel tubular short columns under axial loading", Journal of Constructional Steel Research,Vol. 65, pp. 2186-2196, (2009).

26. Lam, D. and Gardner, L., "Structural design of stainless steel concrete filled columns", Journal of Constructional Steel Research,Vol. 64, pp. 1275-1282, (2008).

27. Zeghiche, J. and Chaoui, K., "An experimental behaviour of concrete-filled steel tubular columns", Journal of Constructional Steel Research,Vol. 61, pp. 53-66, (2005).

28. Ellobody, E., Young, B. and Lam, D., "Behaviour of normal and high strength concrete-filled compact steel tube

circular stub columns", Journal of Constructional Steel Research,Vol. 62, pp. 706-715, (2006).

29. Yu, Z.W., Ding, F.X. and Cai, C.S., "Experimental behavior of circular concrete-filled steel tube stub columns", Journal of Constructional Steel Research,Vol. 63, pp. 165-174, (2007).

30. Hoang, A.L. and Fehling, E., "Numerical study of circular steel tube confined concrete (STCC) stub columns", Journal of Constructional Steel Research,Vol. 136, pp. 238-255, (2017).

31. Ekmekyapar, T. and Al-Eliwi, B.J.M., "Experimental behaviour of circular concrete filled steel tube columns

and design specifications", Thin-Walled Structures, Vol. 105, pp. 220-230, (2016).

32. Zhongqiu, F., Bohai, J. and Yang. M., "The Mechanical Properties of Lightweight Aggregate Concrete Confined by Steel Tube", Design, Construction, Rehabilitation, and Maintenance of Bridges, Vol. 219, pp. 33-39, (2011).

33. Geng, Y., Wang, Y. and Chen. J., "Time-Dependent Behavior of Recycled Aggregate Concrete–Filled Steel Tubular Columns", J. Struct. Eng., Vol. 141, pp. 1-12, (2015).

34. Chen, Z., Xu, J., Xue, J. and Su, Y., "Performance and Calculations of Recycled Aggregate Concrete-filled Steel Tubular (RACFST) Short Columns under Axial Compression", International Journal of Steel Structures, Vol. 14, pp. 31-42, (2014).

35. Guneyisi, E.M., Gultekin, A. and Mermerdas, K., "Ultimate Capacity Prediction of Axially Loaded CFST Short Columns", International Journal of Steel Structures, Vol. 16(1), pp. 99-114, (2016).

36. Lu, Y.Y., Li, N., Li, S. and Liang, H.J., "Experimental investigation of axially loaded steel fiber reinforced high strength concrete-filled steel tube columns", J. Cent. South Univ., Vol. 22, pp. 2287-2296, (2015).

37. Aslani, F., Uy, B., Hur, J. and Carino, P., "Behaviour and design of hollow and concrete-filled spiral welded steel

tube columns subjected to axial compression", International Journal of Steel Structures, Vol. 128, pp. 261-288, (2017).

38. Ellobody, E., "Numerical modelling of fibre reinforced concrete-filled stainless steel tubular columns", Thin-Walled Structures, Vol. 63, pp. 1-12, (2013).

39. Tam, V.W.Y., Wang, Z.B. and Tao, Z., "Behaviour of recycled aggregate concrete filled stainless steel stub columns", Materials and Structures, DOI 10.1617/s11527-013-0061-1, (2013).

40. Wang, Y., Chen, J. and Geng, Y., "Testing and analysis of axially loaded normal-strength recycled aggregate concrete filled steel tubular stub columns", Engineering Structures,Vol. 86, pp. 192-212, (2015).

41. O'Shea, M.D. and Bridge, R.Q., "Design of circular thin-walled concrete filled steel tubes", Journal of Structural Engineering, Vol. 126, pp. 1295-1303, (2000).

42. Gupta, P.K., Sarda, S.M. and Kumar, M.S., "Experimentaland computational study of concrete filled steel tubular columns under axial loads", Journal of Constructional Steel Research, Vol. 63, pp. 182-193, (2007).

43. Mirjalili, S., Mirjalili, S.M. and Lewis, A., "Let a biogeography-based optimizer train your Multi-Layer Perceptron", Information Sciences, Vol. 269, pp.188-209, (2014).

44. Keshtegar, B. and Heddam, S., "Modeling daily dissolved oxygen concentration using modified response surface method and artificial neural network:a comparative study", Neural Computing and Applications, DOI 1007/10/s00521-017-2917-8, (2017)