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The finite element model of the bridge is established by ANSYS software and the fundamental frequency and the corresponding vibration mode is drawed by Modal Analysis. 本橋利用ANSYS軟件建立了松原龍華松花江特大橋的空間有限元模型，對(duì)該橋進(jìn)行模態(tài)分析，得到理論基頻和相應(yīng)的振型。