摘要
研究目的:结合钢管混凝土拱桥的特点,对哈齐客运专线松花江特大桥四线钢管混凝土拱桥的设计进行介绍,采用专业有限元软件MIDAS建立单梁与梁格模型,对该桥的静力、屈曲、自振特性及横梁配筋等方面内容进行空间仿真分析对比。研究结论:通过研究得出以下结论:支座的横向布置对于支座吨位的选择是非常重要;各工况分别作用下,除收缩二次工况外,单梁与梁格模型受力数值比较吻合,两个模型的刚度、转角、徐变上拱等计算结果差入较小,验证了设计的合理性,为设计提供了有利的依据。
Research purposes： Combined with the characteristics of concrete-filled steel tube arch bridge,the introduction is given in this paper to the design of the concrete-filled steel tube arch bridge of the Songhua River Grand Bridge and the three-dimensional simulation analysis and comparison are made for the static,buckling,self-vibration characteristics and reinforcement of crossbeam of the bridge by using Grillage model and the single beam model with the professional finite element software MIDAS.Research conclusions：From the research it is concluded the transverse layout of support is of great significance to choosing the tonnage of support,and the numerical values obtained from the grillage model is very close to that obtained from the single beam model under the effects of various working condition except under the effect of the secondary contraction.The stiffness,rotation angle,creep on the deflection obtained from the grillage model are almost the same as those obtained from the single beam model.It verifies the rationality of the design and provides the favorable basis for the design.
出处
《铁道工程学报》
EI
北大核心
2010年第12期37-41,共5页
Journal of Railway Engineering Society
关键词
钢管混凝土拱桥
单梁
梁格
concrete-filled steel tube arch bridge
single beam model
grillage model
