Modal Analysis of a Steel Radial Gate Exposed to Different Water Levels

• Autorzy: Brusewicz K. , Sterpejkowicz-Wersocki W. , Jankowski R.

Identyfikatory

DOI

10.1515/heem-2017-0003

• Języki publikacji: EN

Abstrakty

EN

With the increase in water retention needs and planned river regulation, it might be important to investigate the dynamic resistance of vulnerable elements of hydroelectric power plants, including steelwater locks. The most frequent dynamic loads affecting hydroengineering structures in Poland include vibrations caused by heavy road and railway traffic, piling works and mining tremors. More destructive dynamic loads, including earthquakes, may also occur in our country, although their incidence is relatively low. However, given the unpredictable nature of such events, as well as serious consequences they might cause, the study of the seismic resistance of the steel water gate, as one of the most vulnerable elements of a hydroelectric power plant, seems to be important. In this study, a steel radial gate has been analyzed. As far as water gates are concerned, it is among the most popular solutions because of its relatively small weight, compared to plain gates. A modal analysis of the steel radial gate was conducted with the use of the FEM in the ABAQUS software. All structural members were modelled using shell elements with detailed geometry representing a real structure.Water was modelled as an added mass affecting the structure. Different water levels were used to determine the most vulnerable state of the working steel water gate. The results of the modal analysis allowed us to compare the frequencies and their eigenmodes in response to different loads, which is one of the first steps in researching the dynamic properties of steel water gates and their behaviour during extreme dynamic loads, including earthquakes.

Słowa kluczowe

EN

modal analysis; radial gate; dynamic loads

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2017
• Tom: Vol. 64, nr 1
• Strony: 37--47
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Brusewicz K.

• Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, ul. Gabriela Narutowicza 11/12, 80-233 Gdańsk

autor

Sterpejkowicz-Wersocki W.

• Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, ul. Gabriela Narutowicza 11/12, 80-233 Gdańsk

autor

Jankowski R.

• Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, ul. Gabriela Narutowicza 11/12, 80-233 Gdańsk

Bibliografia

• Anami K., Ishii N., Knisely C. (2012) Added mass and wave radiation damping for flow-induced rotational vibrations of skinplates of hydraulic gates, Journal of Fluids and Structures, 35, 213–228.
• Boretti Z. (1968) Steel Structures in Water Engineering, Warszawa, Arkady (in Polish).
• Cai YQ., Zhang K. (2011) Study of Modal Parameter Identification from Ambient Vibration on a Deep Radial Gate, Applied Mechanics and Materials, 105–107, 511–517.
• Chmielewski T., Zembaty Z. (1998) Fundamentals of Structural Dynamics,Warszawa, Arkady (in Polish).
• Chopra A. (1995) Dynamics of Structures: Theory and Applications to Earthquake Engineering, New Jersey, Prentice Hall, Englewood Cliffs.
• Falborski T., Jankowski R., Kwiecień A. (2012) Experimental study on polymer mass used to repair damaged structures, Key Engineering Materials, 488–489, 347–350.
• Falborski T., Jankowski R. (2013) Polymeric bearings – a new base isolation system to reduce structural damage during earthquakes, Key Engineering Materials, 569–570, 143–150, .
• Jankowski R., Mahmoud S. (2015) Earthquake-Induced Structural Pounding, Springer, Switzerland.
• Jankowski R., Mahmoud S. (2016) Linking of adjacent three-storey buildings for mitigation of structural pounding during earthquakes, Bulletin of Earthquake Engineering, 14, 3075–3097.
• Liu J. L., Fang X., Wang Z. Z., Sun D. X. (2012) Simulations of Natural Vibration Characteristics of Large-Size Radial Gate with Three Arms Considering Fluid-Solid Coupling, Applied Mechanics and Materials, 50–51, 200–204.
• Naderpour H., Barros R. C., Khatami S. M., Jankowski R. (2016) Numerical study on pounding between two adjacent buildings under earthquake excitation, Shock and Vibration, Vol. 2016, Article ID 1504783.
• Pani P., Bhattacharyya S. (2008) Hydrodynamic pressure on a vertical gate considering fluid–structure interaction, Finite Elements in Analysis & Design, 44, 759–766.
• Wójcicki Z., Kostecki S., Grosel J. (2016) Operational Modal Analysis ofWeir on Odra River in Poland, Procedia Engineering, 153,XXVPolish-Russian-Slovak Seminar ”Theoretical Foundation of Civil Engineering”, 874–881.
• Zembaty Z., Cholewicki A., Jankowski R., Szulc J. (2005a) Earthquakes of September 21, 2004 in north eastern Poland and their effects on structures, Inzynieria i Budownictwo, 61 (1), 3–9 (in Polish).
• Zembaty Z., Jankowski R., Cholewicki A., Szulc J. (2005b) Earthquake of November 30, 2004 in Podhale and its effects on structures, Inzynieria i Budownictwo, 61 (9), 507–511 (in Polish).