拱桥景观廊桥施工顺序变化对主梁受力影响的研究

发布时间：2018-04-13 18:51

本文选题：景观廊桥 + 纵梁　；参考：《重庆交通大学》2015年硕士论文

【摘要】：一直以来,交通为人员流动和物资流通提供了必不可少的条件,为人和物的空间位移提供运输服务,是支撑经济发展、促进社会文化交流的基础性产业和服务性产业,并伴随着人类文明的进步而不断发展,是构成人类文明的重要组成部分。与此同时,桥梁作为构成交通的一个重要组成部分,也随着社会的发展而不断发展。随着桥梁的不断发展,廊桥也随之应运而生。古代廊桥伴随着历史经历了萌芽期、发展期、繁荣期、鼎盛期以及衰落期。古代廊桥逐渐被历史淘汰,但现代廊桥开始逐渐发展。近年来,各地在城市和风景区开发的建设中,因为功能和打造景观环境的需要而建造了不少形式和风格各异的廊桥。廊桥相关的设计研究也开展起来,但仍处于初探阶段,在对施工顺序变化下的纵梁受力影响方面的研究更少,鉴于廊桥的快速发展,对此进行研究是很有必要的。本文以剑阁县剑门新区清江河景观廊桥为依托工程,运用有限元软件Midas/Civil分别建立与各施工顺序下所对应的模型,得到各模型在施工阶段与成桥状态下纵梁的位移、内力与应力数据,并将各模型的数据在施工阶段与成桥状态下分别对比分析,以研究在施工顺序变化下的纵梁受力影响;此外,将廊桥整体分析与上部建筑自重等效为集中力加载在桥上,对比分析纵梁的最大位移和最大应力,以研究两种之间对纵梁的受力影响。最后据此提出相关建议意见,为同类廊桥的设计、施工提供参考资料。
[Abstract]:For a long time, traffic has provided essential conditions for the movement of people and goods, and provided transportation services for the spatial displacement of people and objects. It is a basic industry and a service industry that supports economic development and promotes social and cultural exchanges.Along with the progress of human civilization, it is an important part of human civilization.At the same time, as an important part of traffic, bridges are developing with the development of society.With the continuous development of bridges, the bridge also came into being.Along with history, the ancient bridge experienced a period of germination, development, prosperity, heyday and decline.The ancient bridge was gradually eliminated by history, but the modern bridge began to develop gradually.In recent years, in the development of cities and scenic spots, many bridges of different forms and styles have been built because of the need of function and landscape environment.The research on the bridge design is also carried out, but it is still in the initial stage, and there is less research on the influence of the longitudinal beam force under the change of construction sequence. In view of the rapid development of the bridge, it is necessary to study it.In this paper, based on the Qingjiang River landscape bridge in Jianmen New District, Jiange County, the models corresponding to each construction sequence are established by using the finite element software Midas/Civil, and the displacement of the longitudinal beam in the construction stage and the completed bridge state is obtained.The data of internal force and stress, and the data of each model are compared and analyzed in the construction stage and the state of the bridge, respectively, in order to study the influence of the longitudinal beam force under the change of the construction sequence; in addition,The whole analysis of the bridge and the weight of the upper building are equivalent to the concentrated force loading on the bridge. The maximum displacement and the maximum stress of the longitudinal beam are compared and analyzed in order to study the effect of the two kinds of load on the longitudinal beam.Finally, some suggestions are put forward to provide reference for the design and construction of similar bridges.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U441;U445.4

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