钢筋混凝土连拱廊桥结构受力特性研究

发布时间：2018-01-13 18:12

本文关键词：钢筋混凝土连拱廊桥结构受力特性研究　出处：《西华大学》2016年硕士论文　论文类型：学位论文

【摘要】：随着城市桥梁的大量建设,人们对桥梁的外观要求不断提高,这就要求桥梁不仅要满足日益增加的交通流量,还要满足人们的审美观。廊桥就是有房屋结构的桥梁,它既可以满足交通出行,又可以修建出形式多样的商业建筑,因此它能够解决目前城市土地资源匮乏的难题。但是目前廊桥的研究依然不是很深入,连拱廊桥内力变化规律的研究依然不多,特别是对于钢筋混凝土连拱廊桥内力分析及变化规律的研究更是缺乏。以往都是将廊桥作为一个简化的桥梁来进行研究,将上部廊体作为桥梁的装饰结构,而没有比较分析立柱荷载对连拱结构的受力变化的影响。针对目前现状本文进行了以下研究:(1)收集了古代拱桥和廊桥的相关资料,得出了其发展历程,介绍了廊桥的基本功能,并阐述了目前对廊桥的研究现状。(2)介绍了关于拱桥的内力计算方法和拱桥挠度的计算理论。(3)以某在建九跨钢筋混凝土连拱廊桥为实例,利用Midas civil有限元分析软件建立模型。计算并分析两种情况下拱桥连拱结构受力及内力变化规律即:无廊体立柱荷载(工况一)与有廊体立柱荷载(工况二);对模型进行内力计算并分析,得到廊体立柱荷载对拱桥连拱结构的受力变化的影响,分析了各工况时廊桥的危险截面的变化,从而得出拱桥连拱结构的内力变化规律。(4)分析连拱结构的受力变化规律及危险截面变化情况。在此基础上针对不同的情况给出一些相应的措施建议,可为类似工程提供有益的参考。
[Abstract]:With a large number of city construction of the bridge, the bridge appearance requirements continue to increase, which requires the bridge not only to meet the increasing traffic flow, but also to meet people's aesthetic view. There is a bridge bridge building structure, it can not only meet the traffic, but also to build a variety of commercial buildings, so it to solve the problem of the current shortage of land resources in the city. But the bridges research is still not very thorough study of changes of the internal force of arch bridges even still not much, especially the research of the reinforced concrete bridge arcade and the changes of the internal force analysis is lacking. The past are the bridges as a simplified bridge on the upper gallery as a decorative body structure of the bridge, but not a comparative analysis of column load on the arch structure stress changes. According to the present situation of this paper The following research: (1) the relevant data collected by the ancient bridge and bridges, the development process, and introduces the basic function of the bridge, and expounds the current research status of bridges. (2) introduced the internal force calculation theory of arch bridge and arch bridge deflection calculation method. (3) to a building nine span reinforced concrete arcade bridge as an example, the model was built by Midas finite element analysis software civil. Analysis of two cases of arch bridge arch structure by the variation of force and internal force is calculated and no column load (corridor condition) and corridor column load (case two); the internal force of the model the calculation and analysis, get the gallery column load arch structure stress change influence on arch bridge, analyzes the change of the dangerous section of the bridge condition, so that the internal force variation of structure of arch bridge arch. (4) the force of structure variation and analysis of arch On the basis of this, some corresponding measures and suggestions are given on the basis of different conditions, which can provide useful reference for similar projects.

【学位授予单位】：西华大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U441

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