虛擬激勵法在自錨式懸索橋豎向地震反應分析中的應用
注意:本論文已在《東南大學學報(自然科學版)》 2003, 33(4):522~525上發表 摘要:考慮壓、彎耦合效應,建立了自錨式懸索橋的豎向地震動方程,并利用虛擬激勵法來求解,由于虛擬激勵法自動計及了參振振型的互相關項和激勵之間的互相關項,是快速精確的CQC算法.文中以蘭旗松花江混凝土自錨式懸索橋為例,計算了主梁、主塔和主纜的期望峰值響應,并對地震動空間效應對自錨式懸索橋的豎向地震反應影響規律作了詳細的討論.
Application
of pseudo excitation method to vertical seismic response analysis of
self-anchored suspension bridges Abstract: The vertical
seismic dynamic equation of self-anchored suspension bridges is presented by
taking into account coupling effect of axial and flexural action, and pseudo
excitation method is utilized to solve this equation. Because the method is
highly efficient and involves the necessary cross-correlation terms both
between the participant modes and between the excitations, it is a fast and
exact CQC (complete quadratic combination) algorithm. The expected peak
responses of main beam, towers and cables of Lanqi Song Hua River concrete
self-anchored suspension bridge are investigated, and the spatial variation
effect on vertical seismic response of self-anchored suspension bridge are
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