Study on Axial Compression Behavior of Cross-Shaped and L-Shaped Multi-cavity Concrete-Filled Steel Tube Special Shaped Column

다국어 초록 (Multilingual Abstract)

Multi-cavity concrete-fi lled steel tube special shaped column (CFSTSSC) combines the excellent characteristics of multicavity steel tube and core concrete. CFSTSSC has the advantages of high bearing capacity, good ductility, and strong energy dissipation capacity. At present, accurate calculation methods for these kinds of structures are limited and research into crossshaped and L-shaped multi-cavity CFSTSSCs is not available. Therefore, the axial compression behavior of cross-shaped and L-shaped multi-cavity CFSTSSCs has been investigated, though experimental research and numerical simulation, in this study. First, axial compression tests were carried out on three cross-shaped and three L-shaped multi-cavity CFSTSSCs to analyze their failure modes, axial load-strain curve, ductility index, and ultimate bearing capacity. Then, fi nite element (FE) calculation models of cross-shaped and L-shaped multi-cavity CFSTSSCs were established. The FE models are in good agreement with the experimental results, which provides a foundation for further parameter analysis and failure mechanism study of special shaped columns. Finally, combining parameter analysis and limit equilibrium theory, equations for calculating the ultimate bearing capacity of cross-shaped and L-shaped multi-cavity CFSTSSCs were proposed. The results show that the error between the simplifi ed equation and the FE result is less than 15%, indicating that the equations can provide reference for practical engineering applications.

참고문헌 (Reference)

1 Ding, F. X., "Unified calculation method and its application in determining the uniaxial mechanical properties of concrete" 5 : 381-393, 2011

2 Lu, D. R., "The impact of stirrups on the composite action of concrete-filled steel tubular stub columns under axial loading" 30 : 768-802, 2021

3 Zhong, S. T., "The concrete-fi lled steel tubular structures" Tsinghua University Press 2003

4 Ding, F. X., "Study on the behavior of concrete-filled square double-skin steel tubular stub columns under axial loading" 23 : 665-676, 2020

5 Li, H., "Study on mechanical properties of self-compacting concrete and its filled in-line multi-cavity steel tube bundle shear wall" 12 : 3466-, 2019

6 Fang, X. D., "Study on axial bearing capacity of shear wall with steel tube-confined high-strength concrete" 37 : 11-22, 2016

7 Mansouri, A., "Shear strength of concrete-filled steel tubes based on experimental results" 146 (146): 04020097-, 2020

8 Fan, Z., "Research on tension-bending performance of steel plate concrete composite shear walls" 37 : 1-9, 2016

9 Fan, Z., "Research on axial-tension performance of steel plate composite shear walls" 18 : 10-18, 2016

10 Shahryar, R., "Profiled sandwich composite wall with high performance concrete subjected to monotonic shear" 107 : 124-136, 2015

11 Wang, Z., "Performance of special-shaped concrete-filled square steel tube column under axial compression" 2020 : 1763142-, 2020

12 AHMER ALI ; 김두기 ; 조성국, "Modeling of Nonlinear Cyclic Load Behavior of I-shaped Composite Steel-Concrete Shear Walls of Nuclear Power Plants" 한국원자력학회 45 (45): 89-98, 2013

13 Ding, F. X., "Mechanical behavior of circular and square concrete filled steel tube stub columns under local compression" 94 : 155-166, 2015

14 Huang, Z. F., "Mechanical behavior of T-shaped multi-partition steelconcrete composite member under eccentric compression" 41 : 108-119, 2020

15 Zhang, X. X., "Mechanical behavior of T-Shaped multi-partition steel-concrete composite shear walls with limited width under axial compression" Harbin Institute of Technology 2017

16 "GB/T 228.1-2010. Metallic materials-Tensile testing-Part 1:Method of test at room temperature"

17 Feng, W., "Fire resistance of concretefilled steel plate composite(CFSPC)walls" 88 : 26-39, 2017

18 Huang, Z. F., "Finite element analysis on eccentrically compressive behavior of T-shaped multi-partition steel-concrete composite shear walls with limited width" 38 : 133-141, 2017

19 Chang, X., "Experimental study on shear resistance of self-stressing concrete filled circularsteel tubes" 65 (65): 801-807, 2008

20 Congzhen Xiao ; Shaohuai Cai ; Tao Chen ; Chunli Xu, "Experimental study on shear capacity of circular concrete filled steel tubes" 국제구조공학회 13 (13): 437-449, 2012

21 Feng, P., "Experimental study on shear behavior of cold-formed thin-walled steel reinforced concrete shear walls" 31 : 83-91, 2010

22 Chen, J. W., "Experimental study on seismic performance of prefabricated shear wall with concrete filled steel tube" 36 : 176-184, 2015

23 Wang, M. F., "Experimental study on seismic performance of precast composite shear wall with concealed bracings and U-shape steel bar" 41 : 1-10, 2019

24 Wei, W., "Experimental study on seismic behavior of steel plate reinforced concrete composite shear wall" 160 : 281-292, 2018

25 Guo, L. H., "Experimental study of rectangular multi-partition steel-concrete composite shear walls" 130 : 577-592, 2018

26 Wang, S. Y., "Experimental study and numerical simulation on double skin composite walls" 40 : 216-226, 2020

27 Zhang, X. M., "Experimental seismic behavior of innovative composite shear walls" 116 : 218-232, 2016

28 Li, H. B., "Experimental investigation on the mechanical properties of self-compacting concrete under uniaxial and triaxial stress" 13 : 1830-, 2020

29 Yong, Y., "Experimental behaviour of concrete-filled steel tubular members under lateral shear loads" 122 : 226-237, 2016

30 Zhang, X. M., "Experimental behavior of innovative T-shaped composite shear walls under inplane cyclic loading" 120 : 143-159, 2016

31 Sun, J., "Experimental and theoretical study on shear capacity of vertical joints in IPSW system" 44 : 631-637, 2014

32 Wang, Y. H., "Experimental and FEA on axial behavior of rectangular multipartition short-legged composite shear walls" 38 : 105-111, 2017

33 Feng, P., "Discussion and definition on yield points of materials, members and structures" 34 : 36-46, 2017

34 Ding, F. X., "Composite action of hexagonal concrete-filled steel tubular stub columns under axial loading" 107 : 502-513, 2016

35 Ding, F. X., "Behavior of concrete-filled square steel tubular stub columns under axially compressive loading" 31 : 583-592, 2014

36 Kenji, S., "Behavior of centrally loaded concrete-filled steel-tube short columns" American Society of Civil Engineers 130 : 180-188, 2004

37 Li, H. B., "Axial compression performance and ultrasonic testing of multicavity concrete-filled steel tube shear wall under axial load" 2020 : 8877282-, 2020

38 Wang, H. Y., "Axial and hysteretic behavior of rectangular multipartition steel-concrete composite short-leg shear walls" Harbin Institute of Technology 2016

39 Sun, H., "A study on axial compression performance of concrete-filled steel-tubular shear wall with a multi-cavity T-shaped cross-section" 13 : 4831-, 2020

40 Mojtaba Labibzadeh ; Reza Hamidi, "A Design Formula for Lateral Load Resistance of Concrete Filled Double-Steel-Plate Walls with Small Height-to-Length Ratio" 대한토목학회 23 (23): 3493-3508, 2019