Analysis of the Stress-Strain State of the Foundation for the Cooling Device of Steelmaking Production with the Option of Using High-Strength Steel Fiber Concrete
S. N. Mashtaler
Donbas National Academy of Civil Engineering and Architecture
Annotation: The results of the analysis of the technical state of the columnar foundation of the refrigeration unit of the continuous casting machine (CCM) of the SP «Metalen», as well as theoretical studies of the effectiveness of the use of high-strength steel-fiber-reinforced concrete for the the construction of the foundations of CCM, using software package «Lira-SAPR 2017», are presented in this article. An example of using the diagrammatic method in calculating the foundation, taking into account the actual operating mode of the structure under conditions of exposure to high temperatures, is considered. Numerical results of the influence of the nonuniformity of temperature and shrinkage deformations on the parameters of the stress-strain state of the structure are obtained. Numerical studies have established, that the use of high-strength steel-fiber reinforced concrete of class B100 with μsfb = 2,5 % instead of concrete of class B40 under the combined effect of force and high temperature and shrinkage actions, taking into account the physical nonlinearity of materials, leads to a decrease in compressive and tensile stresses by up to 25 %, while the maximum crack width is lesser than 0,1 mm, which does not exceed maximum permissible values.
Keywords: columnar foundations, stress-strain state, temperature and humidity effects, high-strength steel fiber concrete.
Pages: 171-185.
Link for citation: Mashtaler, S. N. Analysis of the Stress-Strain State of the Foundation for the Cooling Device of Steelmaking Production with the Option of Using High-Strength Steel Fiber Concrete. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2020. – Vol. 16, N 4. – Р. 171-185. – URL: https://donnasa.ru/publish_house/journals/spgs/2020-4/02_machtaler.pdf (date of access: 19.09.2024). (in Russian)
Vol. 16, N 4 (2020)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture