1600t移动模架金属结构有限元计算及优化技术研究

发布时间：2018-06-16 23:58

本文选题：ANSYS + 移动模架　；参考：《华北水利水电大学》2017年硕士论文

【摘要】：移动模架(MOVE SUPPORT SYSTEM)即MSS是一种利用自身模板,进行逐孔移动浇筑砼梁的施工机械,被广泛应用于道路施工和桥梁建设工程。移动模架的特点是模具经过一次现场组装即可连续使用,施工效率高,准确度好,能适应多重复杂工况。本文以某公司研制的1600t移动模架整体金属结构为研究对象,基于ANSYS平台,采用APDL参数化语言,实现移动模架的建模和有限元精确计算。对造桥机的分析步骤进行了总结,并就遇到的问题提出解决方案。针对移位过孔的情形,以两米为一步长,进行过孔的分析,确定过孔时整体移动模架的应力及支反力变化情况,研究造桥机在筑梁及移位过孔行程的极限应力曲线规律;对于各节主梁及导梁间的螺栓群连接,利用SolidWorks软件建立各个接头的三维实体,导入Workbench软件进行有限元实体仿真计算,查看高强度螺栓的应力分布,校核螺栓的安全性;利用ANSYS软件对主梁及桁架导梁完成参数化优化,减轻其重量;借助APDL语言完成外模系统的有限元计算模型,并进行分析和优化。采用参数化有限元分析方法可以更加全面、准确地指导造桥机的设计。
[Abstract]:Moving mould frame (moveSUPPORT system) is a kind of construction machine which uses its own formwork to move concrete beam by hole, and is widely used in road construction and bridge construction. The characteristics of the movable mould frame are that the mould can be used continuously after a single field assembly, the construction efficiency is high, the accuracy is good, and it can adapt to many complex working conditions. In this paper, the whole metal structure of 1600t mobile die frame developed by a company is taken as the research object. Based on ANSYS platform and using APDL parameterized language, the modeling and finite element accurate calculation of the mobile die frame are realized. The analysis steps of bridge-making machine are summarized, and the solutions to the problems encountered are put forward. In view of the situation of displacement and passing through holes, taking two meters as one step, the analysis of passing holes is carried out, and the change of stress and supporting reaction force of the whole moving die frame is determined, and the law of limit stress curve of bridge construction machine in beam construction and displacement through the hole stroke is studied. For the bolt group connection between the main beam and guide beam, the 3D entity of each joint is established by SolidWorks software, and the finite element entity simulation is carried out by importing Workbench software to check the stress distribution of high strength bolt and check the safety of bolt. ANSYS software is used to optimize the main beam and truss guide beam to reduce its weight, and APDL language is used to complete the finite element calculation model of the external model system, and the analysis and optimization are carried out. The parameterized finite element analysis method can be used to guide the design of bridge construction machine more comprehensively and accurately.
【学位授予单位】：华北水利水电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U445.463

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