IJSTR

International Journal of Scientific & Technology Research

Home About Us Scope Editorial Board Blog/Latest News Contact Us
0.2
2019CiteScore
 
10th percentile
Powered by  Scopus
Scopus coverage:
Nov 2018 to May 2020

CALL FOR PAPERS
AUTHORS
DOWNLOADS
CONTACT

IJSTR >> Volume 10 - Issue 6, June 2021 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Impact Response Of Concretefilled Steel Tubular Members (CFST) Using Different Types Of Concrete Filling.

[Full Text]

 

AUTHOR(S)

Anwar Badawy,Hanan H. Eltobgy, Emad Darwish, Mahmoud Morgan

 

KEYWORDS

Impact load, concrete filled steel tube CFST, Steel fiber concrete, propylene fiber concrete, high strength concrete.

 

ABSTRACT

In this paper, experimental and numerical studies were carried out to investigate the performance of normal concrete (N.C), polypropylene fiber concrete (P.F.C), steel fiber concrete (S.F.C), and high strength concrete (H.S.C) filled steel tubes under lateral impact loading.A total of eight specimenswere tested divided into two groups, four specimens for each for the four types of concrete. The first group the specimen’sdimension were 114.3 mm diameter and 4 mm thickness, and the other group with dimension of 88 mm diameter and 4 mm thickness. The average cubic strength for all concrete was Fcu=45 N/mm2, except for the high strength concrete wasFcu=70 N/mm2. The specimens were tested using drop-weight impact test rigs with fixed- sliding boundary conditions at ends.The parameters studied were types of concrete,the length to diameter aspect ratio, and the confinement factor effect.The failure mode and local damages of the specimens were thoroughly investigated.A finite element analysis (FEA) model was also performed to simulatethe performance of (CFST) members against lateral impact loading and the predicted resultsfrom the FEA model were validated with the corresponding experimental results.Wide range analyses of the (CFST) specimen’sresponse against impact loading were then carried out using the validated FE models to examine the deformation and the energy dissipation of each concrete type.The main findings are as follows: (1) The lowest value for the total impact energy and maximum dynamic displacement were recorded for all specimens filled with polypropylene concrete specimens. While the maximum recovery energy was observed for the same specimens in group (I). (2) Nearly the same value for the total impact energy and maximum dynamic displacement were recorded for the specimens filled with ordinary concrete and high strength concrete, which mean that no benefit was gained form increasing the concrete strength.On the other hand, it may have triggered brittle failure for the concrete core. (3) high strength concrete specimens has The lowest values of constraining factor (ξ) , which behave in the most brittle failure pattern. so, Ductility of the tested specimens increase with the constraining factor (ξ).

 

REFERENCES

[1] A. Seminar, "Concrete Filled Steel Tubes—A Comparison of International Codes and Practices," Innsbruck, September. Google Scholar, 1997.
[2] N. E. Shanmugam and B. Lakshmi, "State of the art report on steel–concrete composite columns," Journal of constructional steel research, vol. 57, no. 10, pp. 1041-1080, 2001.
[3] L.-H. Han, G.-H. Yao, and Z. Tao, "Performance of concrete-filled thin-walled steel tubes under pure torsion," Thin-Walled Structures, vol. 45, no. 1, pp. 24-36, 2007.
[4] U. Starossek, N. Falah, and T. Lohning, "Numerical analyses of the force transfer in concrete-filled steel tube columns," Structural engineering and mechanics: An international journal, vol. 35, no. 2, pp. 241-256, 2010.
[5] D. Lam and K. Wong, "Axial capacity of concrete filled stainless steel columns," in Structures Congress 2005: Metropolis and Beyond, 2005, pp. 1-11.
[6] S.-F. Jiang, Z.-Q. Wu, and D.-S. Niu, "Experimental study on fire-exposed rectangular concrete-filled steel tubular (CFST) columns subjected to bi-axial force and bending," Advances in Structural Engineering, vol. 13, no. 4, pp. 551-560, 2010.
[7] H. Sharma, S. Hurlebaus, and P. Gardoni, "Performance-based response evaluation of reinforced concrete columns subject to vehicle impact," International Journal of Impact Engineering, vol. 43, pp. 52-62, 2012.
[8] B. EN, "1-7 Eurocode I: actions on structures-Part 1-7. general actions—accidental actions [S]," Brussels: European Committee for Standardization, vol. 2006, pp. 53-55, 1991.
[9] M. R. Bambach, H. Jama, X.-L. Zhao, and R. Grzebieta, "Hollow and concrete filled steel hollow sections under transverse impact loads," Engineering Structures, vol. 30, pp. 2859-2870, 10/01 2008, doi: 10.1016/j.engstruct.2008.04.003.
[10] Y.-F. Yang, Z.-C. Zhang, and F. Fu, "Experimental and numerical study on square RACFST members under lateral impact loading," Journal of Constructional Steel Research, vol. 111, pp. 43-56, 2015.
[11] A. Al-Husainy, "Impact response of recycled aggregate concrete filled steel tube columns strengthened with CFRP," University of Liverpool, 2017.
[12] H. Qu, G. Li, S. Chen, J. Sun, and M. Sozen, "Analysis of Circular Concrete-Filled Steel Tube Specimen under Lateral Impact," Advances in Structural Engineering, vol. 14, pp. 941-952, 10/01 2011, doi: 10.1260/1369-4332.14.5.941.
[13] A.-Z. Zhu, W. Xu, K. Gao, H.-B. Ge, and J.-H. Zhu, "Lateral impact response of rectangular hollow and partially concrete-filled steel tubular columns," Thin-Walled Structures, vol. 130, pp. 114-131, 2018.
[14] Y. Deng, C. Tuan, and Y. Xiao, "Flexural Behavior of Concrete-Filled Circular Steel Tubes under High-Strain Rate Impact Loading," Journal of Structural Engineering, vol. 138, pp. 449-456, 03/01 2012, doi: 10.1061/(ASCE)ST.1943-541X.0000464.
[15] B. En, "197-1: 2011," Cement, Composition, Specifications and Conformity Criteria for Common Cements. London, England: British Standard Institution (BSI), 2011.
[16] A. No, "Specification for aggregates from natural sources for concrete," ed: BS, 1992.
[17] U. m. Abaqus and S. U. s. Manual, "Hibbitt, Karlsson, and Sorensen," Inc V5, vol. 8, 2005.
[18] L.-H. Han, X.-L. Zhao, and Z. Tao, "Tests and mechanics model for concrete-filled SHS stub columns, columns and beam-columns," Steel and Composite Structures, vol. 1, no. 1, pp. 51-74, 2001.
[19] N. Jones, Structural impact. Cambridge university press, 2011.
[20] W. Abramowicz and N. Jones, "Dynamic axial crushing of square tubes," International Journal of Impact Engineering, vol. 2, no. 2, pp. 179-208, 1984.
[21] Z. Tao, Z.-B. Wang, and Q. Yu, "Finite element modelling of concrete-filled steel stub columns under axial compression," Journal of constructional steel research, vol. 89, pp. 121-131, 2013.
[22] L.-H. Han, G.-H. Yao, and X.-L. Zhao, "Tests and calculations for hollow structural steel (HSS) stub columns filled with self-consolidating concrete (SCC)," Journal of Constructional Steel Research, vol. 61, pp. 1241-1269, 09/01 2005, doi: 10.1016/j.jcsr.2005.01.004.
[23] D. Carreira and K.-H. Chu, "Stress-strain relationship for plain concrete in compression," Journal of the American Concrete Institute, vol. 82, pp. 797-804, 11/01 1985.
[24] L. Oliveira Júnior et al., "Stress-strain curves for steel fiber-reinforced concrete in compression," Matéria (Rio de Janeiro), vol. 15, pp. 260-266, 01/01 2010, doi: 10.1590/S1517-70762010000200025.
[25] A. Committee, "Building code requirements for structural concrete:(ACI 318-02) and commentary (ACI 318R-02)," 2002: American Concrete Institute.
[26] M. Yousuf, B. Uy, Z. Tao, A. Remennikov, and J. R. Liew, "Impact behaviour of pre-compressed hollow and concrete filled mild and stainless steel columns," Journal of Constructional Steel Research, vol. 96, pp. 54-68, 2014.
[27] G. Mays, P. D. Smith, and P. D. Smith, Blast effects on buildings: Design of buildings to optimize resistance to blast loading. Thomas Telford, 1995.
[28] P. Baltay and A. Gjelsvik, "Coefficient of friction for steel on concrete at high normal stress," Journal of Materials in Civil Engineering, vol. 2, no. 1, pp. 46-49, 1990.