[1]宋红红,杨刚,姜亚丽.基于ANSYS的斜拉桥静风稳定性及脉动风抖振分析[J].地震工程与工程振动,2019,39(06):083-90.[doi:10.13197/j.eeev.2019.06.83.songhh.012]
 SONG Honghong,YANG Gang,JIANG Yali.Analyses of cable-stayed bridges’ static wind stability and pulsating wind buffeting based on ANSYS[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(06):083-90.[doi:10.13197/j.eeev.2019.06.83.songhh.012]
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基于ANSYS的斜拉桥静风稳定性及脉动风抖振分析
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年06
页码:
083-90
栏目:
论文
出版日期:
2019-12-31

文章信息/Info

Title:
Analyses of cable-stayed bridges’ static wind stability and pulsating wind buffeting based on ANSYS
作者:
宋红红 杨刚 姜亚丽
大连海事大学 交通运输工程学院, 辽宁 大连 116026
Author(s):
SONG Honghong YANG Gang JIANG Yali
College of Transportation Engineering, Dalian Maritime University, Dalian 116026, China
关键词:
ANSYSCFD静风稳定性分析脉动风抖振分析二次开发
Keywords:
ANSYSCFDsteady wind analysisanalysis of pulsating windsecondary development
分类号:
TU399
DOI:
10.13197/j.eeev.2019.06.83.songhh.012
摘要:
以大连长山大桥为工程背景,基于ANSYS有限元软件,提出一个斜拉桥抗风分析方法。首先建立主桥段有限元模型,基于流体计算软件CFD(Computational Fluid Dynamics)得到主要梁段截面三分力系数,通过MATLAB生成Davenport脉动风速时程曲线。然后基于ANSYS二次开发功能,编制以增量法和内外迭代法为基础的非线性静风稳定性分析和以Davenport风速谱为基础的脉动风抖振分析程序。结果表明:该桥静风失稳风速为125 m/s,远大于设计风速35.2 m/s;在随时间变化的脉动风作用下横桥向振幅最大;在相同基本风速下,脉动风作用产生的位移明显大于静风作用,特别是横桥向和转角位移。该分析结果可为以后斜拉桥抗风设计提供参考。
Abstract:
This paper takes Dalian Changshan Bridge as an example. Based on ANSYS finite element software, a set of wind analysis solution for cable-stayed bridges is proposed. Firstly, the finite element model of the main bridge section is established; three force coefficients of typical main beam section are obtained based on CFD fluid calculation software; through MATLAB, Davenport pulsating wind speed time-history curve is generated, Based on the secondary development function of ANSYS APDL, the program of wind analysis is compiled. It mainly includes the analysis of nonlinear static wind stability based on incremental and internal with external iterative method and pulsating wind buffeting analysis based on Davenport wind speed spectrum. The results show that the static wind instability speed of the bridge is 125 m/s, which is much higher than the design wind speed 35.2 m/s. The transverse bridge amplitude is the largest under the action of pulsating wind with time Under the same basic wind speed, the displacement caused by pulsating wind action is obviously larger than that caused by static wind action, especially the transverse and angular displacement of the bridge. The analysis results can provide a reference for wind resistance design of cable-stayed Bridges in the future.

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备注/Memo

备注/Memo:
收稿日期:2019-08-17;改回日期:2019-09-21。
基金项目:教育部科研业务费重点科学研究培育项目(3132019349)
作者简介:宋红红(1994-),女,硕士研究生,主要从事桥梁稳定性研究.E-mail:honghongsong@dlmu.edu.cn
通讯作者:杨刚(1959-),男,教授,博士,主要从事结构仿真分析与BIM设计研究.E-mail:yanggang@dlmu.edu.cn
更新日期/Last Update: 1900-01-01