REGULATION OF STRESS-DEFORMED STATE IN COMPRESSED ELEMENTS OF STEEL FRAMES

2021;
: 24-31
Received: September 26, 2021
Revised: October 22, 2021
Accepted: November 19, 2021
1
Lviv Polytechnic National University, Department of building production
2
Lviv Polytechnic National University, Department of building рroduction
3
Lviv Polytechnic National University, Department of building production
4
Lviv Polytechnic National University, Department of building production

The article is devoted to the regulation of the stress-strain state in the compressed elements of steel frames under full operating load. It is proposed to perform reinforcement of such elements with different end eccentricities of load application by rational regulation of the stress-strain state in the reinforcement elements. It is shown that the use of SDS adjustment for frame racks increases their bearing capacity and reduces deformability and welds. The new proposed technology of SDS regulation and possible constructive decisions are offered. Numerical experiment revealed high efficiency of application of the proposed solutions during the reconstruction and reinforcement of the metal frame system. The implementation of the proposed method of SDS regulation confirmed its effectiveness.

Bilsky M.R., Kinash R.I. (2012). Calculation of force regulation in the process of reinforcement of compressed elements of steel frames. Theory and practice of construction. Bulletin of the National University "Lviv Polytechnic" № 737, 5-14 p. (in Ukrainian). http://ena.lp.edu.ua:8080/xmlui/bitstream/handle/ntb/16510/2-Bilsky-5-14...

Crawford. J.E. (2014).Retrofit Methods to Mitigate Progressive Collapse. 55 p. https://www.engr.psu.edu.

Martin Vild, Miroslav Bajer. (2016).Strengthening of Steel Columns under Load: Torsional-Flexural Buckling. Advances in Building Technologies and Construction Materials 2016. Volume 2016. https://doi.org/10.1155/2016/2765821

Mohamed Ghannam, Nabil S.Mahmoud, Ahmed Badr, Fikry A.Salem. (2016).Effect of post tensioning on strengthening different types of steel frames. Journal of King Saud University - Engineering Sciences.Volume 29, Issue 4, October 2017, Pages 329-338 https://doi.org/10.1016/j.jksues.2016.07.001

Hohol M. V. (2018). Tension regulation in steel combined structures [monograph]. Kyiv: Stal, 222 p(in Ukrainian). https://bit.ly/3FBL97l

Gogol, M., Zygun, A., Maksiuta, N. (2018). New effective combined steel structures. International Journal of Engineering and Technology. (Vol 7, pp. 343-348). DOI:https://doi.org/10.14419/ijet.v7i3.2.14432

Gogol Miron. (2015).The combined metal structures of the estimated regulation efforts. Czasopismo inżynierii lądowej, środowiska i architektury. Journal of civil engineering, environment and architecture, JCEEA. – Rzeszow, Poland.  Rzeszow University of Technology, 2015.. - vol. 62 (4/15). - pp. 107-118.  DOI: 10.7862/rb.2015.181

Myron Hohol, Ivan Peleshko, Oleksii Petrenko, Dmytro Sydorak. (2021). Analysis of calculation regulation methods in steel combined trusses. Theory and Building Practice. Vol. 3, No. 1 : 64-71.DOI: https://doi.org/10.23939/jtbp2021.01.064

DSTU B B.3.1-2: 2016. Repair and reinforcement of load-bearing and enclosing building structures and foundations of buildings and structures (in Ukrainian). http://online.budstandart.com/ua/catalog/doc-page.html?id_doc=66126

CEN, “Eurocode 3: design of steel structures—part 1-1: general rules and rules for buildings,” EN 1993-1-1:2005, 2009. https://www.phd.eng.br/wp-content/uploads/2015/12/en.1993.1.1.2005.pdf

Amir Hamzeh Keykha, Masoud Nekooei, Reza Rahgozar. (2016).Analysis and strengthening of SHS steel columns using CFRP composite materials. Composites: Mechanics 7(4):275-290. DOI:10.1615/CompMechComputApplIntJ.v7.i4.20

Weiwei Lin, Nozomu Taniguchi, Teruhiko Yoda.(2017).A preventive strengthening method for steel columns: Experimental study and numerical analyses.Journal of Constructional Steel Research, Volume 138,  Pages 357-368. https://doi.org/10.1016/j.jcsr.2017.07.019

 Hui Lin,Ying Hu,Song-Ting Qian,Maher Sulaiman,(2021). Application of Continuous Strength Method in high strength steel sections.Special Issue: EUROSTEEL 2021 Sheffield — Steel's coming home.Volume4, Issue2-4. P.1612-1616. https://doi.org/10.1002/cepa.1463

Jianyang Xue, Liangjie Qi. (2016). Experimental studies on steel frame structures of traditional-style buildings.Steel and Composite Structures 22(2):235-255. DOI:10.12989/scs.2016.22.2.235

Florea Dinu, Ioan Marginean, Dan Dubina, Ioan Petran. (2016). Experimental testing and numerical analysis of 3D steel frame system under column loss.EngineeringStructures,113. 59-70. DOI:10.1016/j.engstruct.2016.01.022

Ou Zhao; Leroy Gardner; and Ben Young,(2016). Experimental Study of Ferritic Stainless Steel Tubular Beam-Column Members Subjected to Unequal End Moments.Journal of Structural Engineering.Vol. 142, Issue 11 https://doi.org/10.1061/(ASCE)ST.1943-541X.0001563