Dynamics of rigid road overpass coverings
Abstract
The purpose of the research is to strengthen the load bearing capacity of bridge structures by increasing the dynamic characteristics under the action of moving loads. In the future, the task of the study is to determine the dynamic characteristics of the overpass and their impact on the load-bearing capacity. The article presents the results of dynamic calculations of hard pavements of road overpasses using analytical calculations and instrumental measurements. A calculation scheme and a mathematical model for 2 road overpasses have been developed. For the solution, an analytical method based on the Rayleigh Ritz method was used. The dynamics of spans at various interfaces with supporting structures are considered. Theoretical values of natural frequencies and graphs of vibrations of spans obtained by instrumental measurements are presented. For a moving load speed of 20.2 m/s, the values of the dynamic coefficient were obtained
Keywords
References
[1] Trufanova, O.Y., & Feskova, L.V. (2015). Analysis and application prospects effective resource saving technologies in concrete. Bridges and Tunnels: Theory, Research, Practice, 7, 81-89. doi: 10.15802/bttrp2015/66716.
[2] Lazariev, I.V. (2019). Calculation-theoretical substantiation of constructive proposals for restoration of consumer properties of reinforced concrete bridge spans. (PhD dissertation, Pacific National University, Khabarovsk, Russia).
[3] Miroshnik, V.A., Klyuchnyk, S.V., & Zhurbenko, M.K. (2012). Accident rate problems of bridge structures. Bridges and Tunnels: Theory, Research, Practice, 1, 55-59. doi: 10.15802/bttrp2012/25621.
[4] SP RK 3.03-112-2013. (2014). Bridges and pipes. Retrieved from https://online.zakon.kz/Document/?doc_id=33307481&pos=4;-108#pos=4;-108.
[5] ALT University. (2018). Materials of XLII international scientific and practical conference. Retrieved from https://alt.edu.kz/wp-content/assets/docs/Наука/Материалы%20конференций/Материалы%20XLII%20Международной%20научно-практической%20конференции%20Том%201.pdf.
[6] Riabukhin, A.K., Leier, D.V., & Liubarskii, N.N. (2020). Structural dynamics and stability. Krasnodar: Kuban State Agrarian University.
[7] Ohibalov, P.M. (1958). Bending, stability and vibrations of multilayer anisotropic shells and plates. Moscow: Moscow University Press.
[8] Timoshenko, S.P., & Voinovskii-Kriher, S. (1966). Plates and shells. Moscow: Nauka Publishing House.
[9] Kusainov, A.A., Dostanova, S.Kh., & Poliakova, Y.M. (2016). Dynamics and stability of structures. Almaty.
[10] Dostanova, S.Kh., Nauryzbaiev, M.K., & Tulieushova, R.Zh. (2017). Mathematical and mechanical models of the dynamic state of bridge spans. In Proceedings “Actual problems and prospects of construction development: Innovations, modernisation and energy efficiency” (pp. 199-203). Almaty: Builder and Architect Publishing House.
[11] Dostanova, S.Kh., & Kalpienova, Z. (2021). Dynamic models of bridge spans. In International scientific and practical conference “Modern trends in architecture and construction: Energy efficiency, energy saving, BIM technologies, urban environment problems” (pp. 148-153). Almaty.