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The paper analyses possible causes of failure of the rotating footbridge over the Ustka port channel. In July, 2015, strange behaviour of this object was observed in the form of excessive vibrations of bridge platform suspension rods, with the accompanying acoustic effects. A preliminary geotechnical analysis has revealed that this destructive effect was caused by the nearby construction works, namely construction of a fishing basin and communication routes in the area close to the bridge, which affected the bridge lashing rod foundation settings. Ground vibrations generated by certain construction activities were likely to have direct impact on decreasing the bearing capacity of these rods and increasing the susceptibility od the piles to extraction. After detecting the above problems in bridge operation, its geodetic monitoring was started. The data recorded during this monitoring, along with the results of force measurements in the rods, have made the basis for a series of numerical simulations, performed in the Finite Element Method (FEM) formalism. The bridge structure was analysed in the conditions defined as the emergency state. Extreme efforts of bridge elements and its dynamic characteristics were examined. A possible source of strange behaviour of the footbridge during its operation which was recognised during these simulations was the coincidence of the global natural frequency of the entire bridge structure with local vibrations of suspension rods, at the frequency approximately equal to 1 Hz. This situation was likely to lead to the appearance of the so-called internal resonance phenomenon. As a final conclusion of the research, recommendations were formulated on possible object oriented corrective actions.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
182--187
Opis fizyczny
Bibliogr. 24 poz., rys., tab.
Twórcy
autor
- Gdansk University of Technology Faculty of Civil and Environmental Engineering 11/12 Narutowicza St. 80 - 233 Gdańsk Poland
autor
- Gdansk University of Technology Faculty of Civil and Environmental Engineering 11/12 Narutowicza St. 80 - 233 Gdańsk Poland
autor
- Gdansk University of Technology Faculty of Civil and Environmental Engineering 11/12 Narutowicza St. 80 - 233 Gdańsk Poland
Bibliografia
- 1. Bielewicz E, Górski J.: Shells with random geometric imperfections simulation - based approach. International Journal of Non-Linear Mechanics, 37(4-5), 2002, pp. 777-784.
- 2. Bolt A., Horodecki G., Cudny M., Wilde K., Chróścielewski J., Miśkiewicz M., Pyrzowski Ł.: Technical expertise concerning possible causes of failure of the openable footbridge structure over the Ustka port channel (in Polish). Gdansk University of Technology, 2015.
- 3. Burzyński S., Chróścielewski J., Witkowski W.: Geometrically nonlinear FEM analysis of 6-parameter resultant shell theory based on 2-D Cosserat constitutive model. ZAMM-Zeitschrift fur AngewandteMathematik und Mechanik 96 (2), 2015, pp.191-204
- 4. Chróścielewski J., Witkowski W.: Four-node semi-EAS element in six-field nonlinear theory of shells. International Journal for Numerical Methods In Engineering 68(11), 2006, pp. 1137-1179.
- 5. Horodecki G.A.: Environmental interactions of deep excavations in urbanised areas (in Polish). Inżynieria Morska i Geotechnika 3, 2016.
- 6. Horodecki G.A., Bolt A.F., Dembicki E.: Geotechnical problems in design and execution of enclosed excavations (in Polish). Inżynieria i Budownictwo 12, 2002, pp. 683-686.
- 7. Iwicki P., Tejchman A., Chróścielewski J.: Dynamic FE simulations of buckling process in thin-walled cylindrical metal silos. Thin-Walled Structures 84, 2014, pp. 344-359.
- 8. Kaliński K.: The finite element method application to linear closed loop steady system vibration analysis. International Journal of Mechanical Sciences 39 (3), 1997, pp. 315–330.
- 9. Kaliński K. J., Mazur M., Kaliński K. J., Mazur M.: Optimal control at energy performance index of the mobile robots following dynamically created trajectories. Mechatronics 37, 2016,pp. 79-88.
- 10. Kreja I., Schmidt R.: Large rotations in first-order shear deformation FE analysis of laminated shells. International Journal Of Non-Linear Mechanics 41(1), 2006, pp.101-123.
- 11. Łukaszewicz A.: Design of openable footbridge over the Ustka port channel (in Polish). HYDRO-NAVAL Sp. z o.o.: 2013.
- 12. Mariak A., Miśkiewicz M, Meronk B., Pyrzowski Ł., Wilde K.: Reference FEM model for SHM system of cable-stayed bridge in Rzeszów. Advances in Mechanics: Theoretical, Computational and Interdisciplinary Issues, Taylor & Francis Group, London 2016, pp. 383-387.
- 13. Mikielewicz J., Mikielewicz D.: A simple model of circular hydraulic pump. International Journal of Heat and Mass Transfer52(1), 2008, pp. 17-21.
- 14. Miśkiewicz M., Wilde K., Chróścielewski J., Pyrzowski Ł. et al.: Report of test loads of the openable footbridge over the Ustka port channel (in Polish). Gdansk University of Technology, 2013.
- 15. PN-85/S-10030 Bridge objects. Loads (in Polish).
- 16. Ordinance of the Minister of Maritime Economy of 23 October, 2006, on technical conditions of use and detailed scope of examination of marine hydro-technical structures (in Polish).
- 17. Sabik A., Kreja I.: Large thermo-elastic displacement and stability FEM analysis of multilayered plates and shells. Thin-Walled Structures 71, 2013, pp.119-133.
- 18. Siemiątkowski M., Przybylski W.: Simulation studies of process flow with in-line part inspection in machining cells. Journal of Materials Processing Technology 171 (1), 2006, pp. 27-34.
- 19. Szłapczyński R.: Evolutionary Sets of Safe Ship Trajectories Within Traffic Separation Schemes. Journal of Navigation 66 (1), 2012, pp. 65-81.
- 20. Szłapczyński R.: Evolutionary Planning of Safe Ship Tracks in Restricted Visibility. Journal of Navigation 68 (01), 2015, pp. 39-51.
- 21. Szłapczyński R., Szłapczyńska J.: Customized crossover in evolutionary sets of safe ship trajectories. International Journal of Applied Mathematics and Computer Science 22 (4), 2012, pp. 999-1009.
- 22. Szłapczyński R., Szłapczyńska J.: On evolutionary computing in multi-ship trajectory planning. Applied Intelligence 2011, pp. 1-20.
- 23. Topolewicz K., Topolewicz M., Rucka M., Wilde K.: Vibration method for evaluating forces in suspension members illustrated by the case Gdansk overbridge (in Polish). Wrocławskie Dni Mostowe, 2014, pp.439-446.
- 24. Wilde, K., Miśkiewicz, M., Chróścielewski, J.: SHM System of the Roof Structure of Sports Arena „Olivia”. Structural Health Monitoring 2013 – Vol. II, Pennsylvania 2013, pp. 1745-1752.
Uwagi
PL
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-b465e542-5831-42cd-9d9a-ac5c0c168ea7