TO THE CALCULATION OF A FIBER CONCRETE BLOCK AS A BEAM ON AN ELASTIC BASIS AS PART OF LOCALLY REINFORCED NODES OF TRUSSES MADE OF SQUARE HOLLOW SECTIONS
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Abstract
The article is devoted to the analytical and numerical study of truss nodes made of a square hollow section with local concrete filling. A numerical analysis of a fiber-concrete element in the form of a beam on an elastic base as a local reinforcement of a truss node made of square hollow profiles under the action of a concentrated load from a neighboring rack is carried out.
Subject of research: The subject of the study is the local filling with concrete as reinforced knots of trusses made of SHS of K-type connection, and the calculation of the load-carrying capacity of truss knots made of HSP under the influence of several concentrated compressive loads from the brace elements.
Materials and methods. The method of internal study based on the numerical experiment and computer simulation SP "ANSYS Workbench" local strengthening of the node of trusses made of SHS K-shaped connection type, locally filled with concrete.
Results: Simple and reliable methods of strengthening nodes made of square hollow profiles by filling with concrete are presented. as well as the corresponding methods of their calculation. The connections of the truss nodes, made of square hollow profiles of the K-shaped type of connection with a direct connection, give high quality with minimal labor and metal consumption.
Conclusion: The load-carrying capacity of truss nodes made of square hollow sections can be increased by local filling of the inner cavity of the chord with concrete, which allows to unload the shelf, to which the lattice element and the side walls of the chord adjoin.
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References
Ran F, Yu Chen, Shengwei Ga, Wei Zh. Numerical investigation of concrete-filled multi-planar CHS Inverse-Triangular tubular trus// Thin-Walled Structures. 2015. №94. Р. 23-37. DOI.org/10.1016/j.tws.2015.03.030.
Wenyuan K, WenboZh, LiboCh, Qinglong L, Yao Zh, Yu Ch. Flexural performance of steel fiber reinforced concrete filled stainless steel tubular trusses// Composite Structures. 2022. DOI.org/10.1016/j.compstruct.2022.116266.
Yoshinaga S, Tetsuya H, Akira I, Atsushi I, Kaoru M. Experiments on concrete filled and reinforced tubular K-joints of truss girder// Journal of Constructional Steel Research. 2014 № 60. P. 683 – 699. DDOI:10.1016/S0143-974X(03)00136-6.
Sha-Sh, JuCh, Fei Xu. Mechanical behavior and design of concrete-filled K and KK CHS connections// Journal of Constructional Steel Research. 2022. № 188. DOI: Org/10. 1016/j.jcsr. 2021. 107000.
Wenwei Y, Jiankang L, Ruhao Y. Experimental Study on the Static Behavior of Reinforced Warren Circular Hollow Section (CHS) Tubular Trusses// Applie sciences. 2018. pp. 1-22. DOI:10.3390/app8112237.
Korobko V. I, Yurov A. P, Morozov S. A. Construction Mechanics. Moscow: Stroyizdat. - 2007. - 66с.
Wenwei Y, Ruhao Y, Yaqi Su, GuoqingZh, Bo Hu. Experimental Study on Hysteretic Behavior of the Overlapped K-Joints with Concrete Filled in Chord// Applie sciences. 2019. № 9. P. 2-17. DOI:10.3390/app9071456.
Saleh S, Saqif M. A, Ramiz F. omparison of behavior between hollow and composite K joints under sustained loading and corrosion// Materials science and engineering. 2019. DOI:10.1088/1757-899X/513/1/012039.
Dengyiding J, Chao H, LumingSh, Lin-Hai H. Numerical performance of blind-bolted demountable square CFST K-joints// Journal of Building Engineering. 2021. № 33. P. 35- 44. DOI.org/10.1016/j.jobe.2020.101646.
Haohui X, Prishilla K, Milan V, Mechanical behaviour of welded high strength steel rectangular hollow section joints// Engineering Failure Analysis. 2021. № 125. DOI.org/10.1016/j.engfailanal.2021.105410.
Gimranov L. R, Pazhwak A., To the determination of the stress-strain state of a concrete block as part of a reinforced node truss from square hollow sections// International Journal of Advanced Academic Studies.2022. №4. P.135-139. E-ISSN: 2706-8927.
Packer J. A, Wardenier J, Zhao X. L, Vegte G. J, Kurobane Y. Design guide for Rectangular hollow section (RHS) joints under predominantly static loading//CIDECT. 2009. ISBN 978-3-938817-04-9.
Wenwei Y, Ruhao Y, Yaqi S, Guoqing Z, Bo H. Experimental Study on Hysteretic Behavior of the Overlapped K-Joints with Concrete Filled in Chord// Appl. Sci. 2019. Vol. 9. DOI:10.3390/app9071456.