基于有限元城轨高架桥连续梁挂篮设计与研究

发布时间：2018-12-07 18:38

【摘要】：本文是针对建造一段长(45+75+45)m高架桥的施工设备——菱形挂篮的设计与分析进行研究。挂篮作为悬臂法施工的主要设备,在当今的大跨度桥梁建设中起着极其重要的作用,因而也得到了越来越广泛的应用。首先,通过仔细分析所需建造的高架桥图纸,从图纸中获取了高架桥的各部分尺寸及各段重量,同时确定了该段高架桥的具体施工方案,这样为下一步挂篮设计建模提供了重要的尺寸依据和理论基础。其次,在深入了解挂篮设备国内外发展现状的基础上,通过参照建造其它桥梁所使用的菱形挂篮及所需建造的高架桥尺寸参数,利用SolidWorks软件建立设计了菱形挂篮的各部分组件,再将各部分组件进行装配,从而形成菱形挂篮总装配体,并对装配好的总装配体进行干涉检查,以确保模型的准确性。再次,利用ANSYS有限元分析软件按照各组件设计的顺序对组件进行力学分析,若部件的力学性能不能满足施工安全要求,则返回SolidWorks中对模型进行更改,直至组件的力学性能能够满足施工安全要求。验证完各个组件满足要求后,对总装配体有限元模型分三种工况进行力学分析,验证了挂篮的刚度、强度及稳定性都能够满足施工安全要求。最后,在满足施工安全的情况下,对挂篮结构进行优化分析,提高挂篮的利用系数,以期减少挂篮总用钢量,节约成本,从而达到经济适用的目的。本文通过对菱形挂篮的设计及有限元力学分析,不仅验证了挂篮设计的合理性,而且为今后挂篮的实际生产工作提供了重要的理论依据和参考,同时对同行业的挂篮设计与分析提供了重要的参考价值。
[Abstract]:This paper studies the design and analysis of diamond hanging basket, which is the construction equipment of a long (45 75 45) m viaduct. As the main equipment of cantilever construction, hanging basket plays an extremely important role in the construction of long-span bridges, so it has been more and more widely used. First of all, through careful analysis of the viaduct drawings needed to be built, the dimensions and weights of each part of the viaduct are obtained from the drawings, and the concrete construction scheme of the viaduct is determined. This provides an important dimension basis and theoretical basis for the next design and modeling of the hanging basket. Secondly, on the basis of deeply understanding the present situation of hanging basket equipment at home and abroad, by referring to the diamond hanging basket used for building other bridges and the dimension parameters of viaduct needed to be built, the components of diamond hanging basket are established and designed by using SolidWorks software. Then the components are assembled to form the rhombic basket assembly and the interference inspection of the assembled assembly is carried out to ensure the accuracy of the model. Thirdly, the ANSYS finite element analysis software is used to analyze the mechanical properties of the components according to the design sequence of each component. If the mechanical properties of the components cannot meet the requirements of construction safety, then the model is changed in SolidWorks. Until the mechanical properties of the assembly can meet the construction safety requirements. After verifying that the components meet the requirements, the finite element model of the total assembly is analyzed in three working conditions, and the stiffness, strength and stability of the hanging basket are verified to meet the requirements of construction safety. Finally, under the condition of satisfying the safety of construction, the structure of hanging basket is optimized and analyzed, and the utilization coefficient of hanging basket is raised, in order to reduce the total steel consumption of hanging basket, save the cost and achieve the purpose of economic application. Through the design of diamond hanging basket and finite element mechanics analysis, this paper not only verifies the rationality of hanging basket design, but also provides an important theoretical basis and reference for the practical production of hanging basket in the future. At the same time, it provides an important reference value for the design and analysis of the hanging basket in the same industry.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.4

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