Analiza korelacyjna drgań losowych mostu wantowego obciążonego porywistym wiatrem

• Autorzy: Bryja D. , Woszczyna A. , Prokopowicz D.
• Konferencja: Problemy dynamiki konstrukcji / XIII Sympozjum Dynamiki Konstrukcji (XIII ; 25-27 września 2008 ; Rzeszów-Bystre, Polska)
• Języki publikacji: PL

Abstrakty

EN

The paper concerns stochastic analysis of cable-stayed bridge response due to the dynamic action of gusty wind. Non-stationary wind model with time dependent periodic mean speed is presented for investigating the buffeting bridge response amplified in resonant regime. Equation of motion is formulated by substructure technique. Buffeting forces are derived under the assumption that their span-wise correlation is the same as that of incoming wind fluctuations. The bridge response is obtained neglecting structure nonlinearities, as a sum of component responses due to buffeting forces acting on scattered deck sections. Mean junction and variance of bridge response are obtained. Two approximate formulas of variance are derived by using two mathematical models of wind turbulence correlations. The outline of numerical application is presented.

Słowa kluczowe

PL

dynamika konstrukcji; SHM; drgania losowe; most wantowy; wiatr; wiatr porywisty; buffeting

EN

construction dynamics; SHM; vibration; cable-stayed bridge; wind; gusty wind; buffeting

• Wydawca: Oficyna Wydawnicza Politechniki Rzeszowskiej
• Czasopismo: Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika
• Rocznik: 2008
• Tom: z. 74 [258]
• Strony: 17--24
• Opis fizyczny: Bibliogr. 8 poz., rys., wykr.

Twórcy

autor

Bryja D.

autor

Woszczyna A.

autor

Prokopowicz D.

• Politechnika Wrocławska, Instytut Inżynierii Lądowej, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław,

Bibliografia

• [1] E. Simiu, R. H. Scanlan, Wind effects on structures. Fundamentals and Applications to Design. John Wiley & Sons, 1996.
• [2] X. Chen, A. Kareem, Advanced in modeling of aerodynamic forces on bridge decks. Journalof Engineering Mechanics (ASCE), 128, No. 11, 1193-1205, 2002.
• [3] Y. Cao, H. Xinang, H. Zfaou, Simulation of stochastic wind field on long-span bridges. Journal of Engineering Mechanics (ASCE), 126, No. 11, 1-6, 2000.
• [4] D. Bryja, A. Woszczyna, D. Prokopowicz, Non-stationary wind model in buffeting analysis of cable-stayed bridge, Proc. of 7th European Conference on Structural Dynamics (EURODYN2008), Southampton, United Kingdom, 2008, (in print).
• [5] B. Biondi, G. Muscolino, A. Sofi, A substructure approach for the dynamic analysis of train-track -bridge system. Computers and Structures, No. 83, 2271 -2281, 2005.
• [6] D. Bryja, M. Knawa, D. Prokopowicz, A. Woszczyna, Zastosowanie techniki pod-struktur do modelowania kładek podwieszonych, Seminarium: Wrocławskie Dni Mostowe 2007. Kładki dla pieszych. Architektura, projektowanie, realizacja, badania, Dolnośląskie Wydawnictwo Edukacyjne, 191-198,2007.
• [7] A. Woszczyna, D. Bryja, D. Prokopowicz, Nonlinear dynamics of an inclined cable subjected to boundary motion conditions, Proc. in Appl Math. And Mech. (PAMM), 7, No. 10.1002/pamm.200700040,4040001-4040002,2007.
• [8] W.A. Gardner, Introduction to random processes with applications to signals and systems, Macmillan Pub. Comp., New York, 1986.