The article considers the issues of increasing the efficiency of steel combined sprengel trusses by developing rational design solutions by improving their stressed-strain state. The research methodology is based on a comparative analysis of technical and economic indicators in terms of material consumption of traditional typical and lightweight combined steel trusses. Three levels of adaptation are considered that affect the consumption of steel in the panels of the upper chord of a combined truss. Examples of achieving structure efficiency of trusses are given. A new method of practical analysis has been developed for the selection, analysis and assessment of the rationality of the stressed-strain state of stiffening girders of combined trusses. Diagrams of total normal stresses in cross-sections of the stiffening girder of a combined truss with 8 panels with a span of 30 m are given and it is shown that they are more uniform in the central part compared to a typical truss.
Bendsøe, M.P., Ben-Tal, A. & Zowe, J (1994). Optimization methods for truss geometry and topology design. Structural Optimization 7, 141-159. https://doi.org/10.1007/BF01742459
https://doi.org/10.1007/BF01742459
Crawford. J.E. (2014). Retrofit Methods to Mitigate Progressive Collapse. 55p. https://www.engr.psu.edu.
Gogol M., Zygun, A., Maksiuta, N. (2018) New effective combined steel structures. International Journal of Engineering and Technology. 7, 3.2, 343-348. Doi:10.14419/ijet.v7i3.2.14432.
https://doi.org/10.14419/ijet.v7i3.2.14432
https://doi.org/10.14419/ijet.v7i3.2.14432.
https://doi.org/10.14419/ijet.v7i3.2.14432
Hamilton I., Kennard H., Rapf O., Kockat J., S Zuhaib S. (2020) Global Status Report for Buildings and Construction: Towards a Zero-emissions, Efficient and Resilient Buildings and Construction Sector. https://globalabc.org/sites/default/files/2021-10/GABC_Buildings-GSR-202...
He L. and Gilbert M. (2015) Rationalization of trusses generated via layout optimization. StructMultidiscipOptim, 52 (4). 677 - 694 https://doi.org/10.1007/s00158-015-1260-x
https://doi.org/10.1007/s00158-015-1260-x
Hohol М., Gasii G., Pents V., Sydorak D. (2022) Structural - Parametric Synthesis of Steel Combined Trusses. Lecture Notes in Civil Engineering, 181, pp. 163-171. https://www.springerprofessional.de/en/structural-parametric-synthesis-o...
https://doi.org/10.1007/978-3-030-85043-2_16
Hohol M. V. (2018). Tension regulation in steel combined structures: Monograph. (Kyiv: Steel), 222 p. https://bit.ly/3FBL97l
Hohol M., Peleshko I., Petrenko O., Sydorak D. (2021). Analysis of calculation regulation methods in steel combined trusses. Theory and Building Practice. 3(1), 64-71. https://doi.org/10.23939/jtbp2021.01.064
https://doi.org/10.23939/jtbp2021.01.064
Janušaitis R., Keras V., Mockienė J. (2012). Development of methods for designing rational trusses. Journal of Civil Engineering and Management 9(3):192-197. DOI:10.3846/13923730.2003.10531325
https://doi.org/10.3846/13923730.2003.10531325
https://doi.org/10.3846/13923730.2003.10531325,
https://doi.org/10.3846/13923730.2003.10531325
Kirsch U (1989) Optimal topologies of truss structures. Computer Methods in Applied Mechanics and Engineering.Volume 72, Issue 1, January 1989, 15-28. https://doi.org/10.1016/0045-7825(89)90119-9
https://doi.org/10.1016/0045-7825(89)90119-9
Pressmair N., Kromoser B. (2023) Development Stages of Structurally Optimised Concrete Girders: Design Concepts, Material Strategies and Experimental Investigation. Lecture Notes in Civil Engineering Building for the Future: Durable, Sustainable, Resilient, pp. 1403-1411. https://doi.org/10.1007/978-3-031-32519-9_142
https://doi.org/10.1007/978-3-031-32519-9_142
Ruiz-Teran A, Aparicio A (2010) Developments in under-deck and combined cable-stayed bridges. Bridge Engineering, 163, 67-78. doi: 10.1680/bren.2010.163.2.67
https://doi.org/10.1680/bren.2010.163.2.67
Shymanovskiy, O. V., Hohol, M. V. (2018). New approach to effective steel combine truss design. 1st International Scientific and Practical Conference Technology, Engineering and Science - 2018. London, United Kingdom, (pp. 16-18).
Shmukler, V. S., (2017). New energy principles of rationalization of structures. Collection of scientific works of the Ukrainian State University of Railway Transport, 167, 54-69.
https://doi.org/10.18664/1994-7852.167.2017.97206
https://doi.org/10.18664/1994-7852.167.2017.97206
https://doi.org/10.18664/1994-7852.167.2017.97206
Tiainen T., Mela K., Jokinen T., Heinisuo M. (2013). High strength steel in tubular trusses, Proceedings of the METNET Seminar 2013 in Lulea, 56-59. https://www.ssab.com/en-gb/products/steel-categories/hollow-sections.
Weldeyesus, A.G., Gondzio, J., He, L. et al. Truss geometry and topology optimization with global stability constraints. Struct Multidisc Optim 62, 1721-1737 (2020). https://doi.org/10.1007/s00158-020-02634-z
https://doi.org/10.1007/s00158-020-02634-z