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 8 - Issue 7, July 2019 Edition



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

Website: http://www.ijstr.org

ISSN 2277-8616



The Effect Of Strengthening By Using Steel Ring Stiffeners On The Behavior Of The Cellular Beams With Large Web-Opening

[Full Text]

 

AUTHOR(S)

Hayder W. Ali, Ameer H. Muhammed

 

KEYWORDS

Cellular Steel Beams (LB), Parent section, Steel ring stiffeners, Ultimate load capacity (ULC), Web post-buckling and Vierendeel mechanism

 

ABSTRACT

the current study included an experimental and numerical study to assign the structural behavior of the cellular steel beams with and without strengthening by placing a steel ring stiffener around web-opening. IPE 140 hot rolled I-section steel beam was used to produce three specimens; the first without opening (control beam), the second was cellular beam without strengthening and the third beams was (LBD-R) with strengthening by steel ring stiffeners around opening with geometrical properties (Br=37mm and Tr=3mm). all cellular beams were fabricated with opening diameter (130mm) that result in expansion depth ratio (1.42), span length (1700mm) and ten openings. the results showed that cellular beam without strengthening was increased the ultimate load up to (31%) than the control beam (without opening) even in case of presenting a large opening and the failure was happened due to the web post-buckling. While the cellular beam with strengthening increased the ultimate load up to (147%) than the control beam and the failure mode that noted was the Vierendeel mechanism. On the other hand, the numerical study by finite element has shown that the increasing the ring thickness can be increased the ultimate load up to (172%) when using steel ring with thickness as the same as the web thickness (0.41 time of flange thickness) and after this value is not feasible economically.

 

REFERENCES

[1] ASD Westok Ltd. Charles Roberts Office Park Charles Street, HorburyJunctionWakefieldWF45FH.,http://www.asdwestok.co.uk/, 2009
[2] D. Kerdal and D. A. Nethercot, “Failure modes for castellated beams,” J. Constr. Steel Res., vol. 4, no. 4, pp. 295–315, 1984.
[3] K. V. . Nimmi K. P, “Experimental and Analytical Investigations of Cellular Steel Beams,” Int. Res. J. Eng. Technol., vol. 3, no. Issue: 08 | Aug-2016, 2016.
[4] F. Erdal and M. P. Saka, “Ultimate load carrying capacity of optimally designed steel cellular beams,” J. Constr. steel Res., vol. 80, pp. 355–368, 2013.
[5] K. D. Tsavdaridis and C. D’Mello, “Web buckling study of the behaviour and strength of perforated steel beams with different novel web opening shapes,” J. Constr. Steel Res., vol. 67, no. 10, pp. 1605–1620, 2011.
[6] A. S. for T. and Materials, “ASTM A370: standard test methods and definitions for mechanical testing of steel products,” 2014.
[7] W. F. Chen and E. M. Lui, “Structural stability: theory and implementation,” 1987.