安慶鐵路長江大橋基準動力有限元模型研究
發(fā)布時間:2018-11-17 09:05
【摘要】:文章探討了大跨度斜拉橋建模中的幾個關鍵問題,即初始平衡構型、斜拉索垂度效應、恒載幾何非線性和正交異性橋面板簡化,為安慶鐵路長江大橋的基準動力有限元模型的建立提供指導;介紹了該橋的現(xiàn)場環(huán)境振動試驗以及峰值法和隨機子空間法的模態(tài)參數(shù)識別結果。安慶鐵路長江大橋有限元模型動力特性的計算結果與實測結果吻合很好,表明建立的有限元模型可作為該橋的基準動力有限元模型。
[Abstract]:In this paper, several key problems in the modeling of long-span cable-stayed bridges are discussed, including initial equilibrium configuration, cable sag effect, geometric nonlinearity under dead load and simplification of orthotropic deck slab. It provides guidance for the establishment of the datum dynamic finite element model of Anqing Railway Yangtze River Bridge. The field vibration test of the bridge and the modal parameter identification results of peak value method and random subspace method are introduced. The calculated results of the finite element model of Anqing Railway Yangtze River Bridge are in good agreement with the measured results, which indicates that the established finite element model can be used as the reference dynamic finite element model of the bridge.
【作者單位】: 合肥工業(yè)大學土木與水利工程學院;
【基金】:國家自然科學基金資助項目(51508144) 中央高校基本科研業(yè)務費專項資金資助項目(JZ2015HGBZ0098;JZ2015HGQC0215)
【分類號】:U441.3
[Abstract]:In this paper, several key problems in the modeling of long-span cable-stayed bridges are discussed, including initial equilibrium configuration, cable sag effect, geometric nonlinearity under dead load and simplification of orthotropic deck slab. It provides guidance for the establishment of the datum dynamic finite element model of Anqing Railway Yangtze River Bridge. The field vibration test of the bridge and the modal parameter identification results of peak value method and random subspace method are introduced. The calculated results of the finite element model of Anqing Railway Yangtze River Bridge are in good agreement with the measured results, which indicates that the established finite element model can be used as the reference dynamic finite element model of the bridge.
【作者單位】: 合肥工業(yè)大學土木與水利工程學院;
【基金】:國家自然科學基金資助項目(51508144) 中央高校基本科研業(yè)務費專項資金資助項目(JZ2015HGBZ0098;JZ2015HGQC0215)
【分類號】:U441.3
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1 ;鄂黃長江大橋 獲準開工建設[J];建筑機械;2000年02期
2 ;瀘州鐵路長江大橋即將開工[J];鐵道建筑技術;2000年06期
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