道路横断面CAD系统的研究与实现

发布时间：2018-04-15 09:24

本文选题：道路 + 横断面设计　；参考：《华中科技大学》2014年硕士论文

【摘要】：道路横断面设计是道路设计中不可或缺的部分，且占较大的比例，其工作量大、重复性多，如果靠人工来完成横断面设计的工作，相当繁琐，且容易出错。因此，应用CAD技术来提高道路横断面设计的质量和效率具有十分重要的意义。本文在了解道路横断面CAD技术发展概况的情况下，汲取某公路设计研究院丰富的道路设计经验，在其多年道路CAD开发应用的基础上，融合国内外同类软件的优点，精心设计开发了新一代道路横断面CAD系统。本文针对系统中的几个关键技术：横断面自动设计、修改设计、土石方计算和调配等进行了深入研究。横断面自动设计中提出支持过渡的路基横断面设计；在确定路基横断面的基础上，根据路基边缘高程、沟顶高程、渠顶高程的关系确定路基外组件的类型、个数和顺序，再根据横断面地面线数据计算各个组件的具体参数；最后，采用三种策略进行优化，提高横断面自动设计的质量和美观。为了横断面设计的易用性和效率，本文提出了基于消息机制的横断面修改设计，，所有的消息由系统自动产生，设计人员可根据消息快速定位到横断面设计有问题的桩号对其进行修改，也可对若干个桩号批量修改。本文提供了横断面面积和土石方数量的多个计算方法，各个适应不同的情况。土石方调配采用可视化半自动调配，实现分离式路基跨线调配、互通范围内跨匝道的直观调配等，路线图形化展示可选用平面和纵断面两种形式。根据上述方法，本文开发的道路横断面CAD系统在很大程度上减少了设计人员的工作量，提高了工作效率，简单易用，贴近实际工作。
[Abstract]:Road cross section design is an indispensable part of road design and accounts for a large proportion of its workload and repeatability. If the work of cross section design is completed manually it is rather tedious and prone to error.Therefore, it is of great significance to apply CAD technology to improve the quality and efficiency of road cross-section design.In this paper, based on the understanding of the general situation of the development of road cross section CAD technology, and drawing on the rich road design experience of a highway design research institute, and on the basis of its many years of road CAD development and application, this paper combines the advantages of similar software at home and abroad.A new generation of road cross section CAD system has been designed and developed.In this paper, some key technologies in the system, such as automatic cross section design, modified design, earthwork calculation and distribution, are studied in depth.On the basis of determining the subgrade cross section, the type, number and order of the subgrade extrinsic components are determined according to the relationship among the embankment edge elevation, the ditch top elevation and the canal top elevation.Then the specific parameters of each component are calculated according to the cross-section ground line data. Finally, three strategies are adopted to optimize the automatic cross-section design to improve the quality and beauty of the automatic design.In order to make cross-section design easy to use and efficient, this paper proposes a cross-section modification design based on message mechanism. All messages are automatically generated by the system.According to the message, the designer can quickly locate the pile number of the cross section design problem, or modify several pile numbers in batches.This paper provides several calculation methods of cross-sectional area and quantity of earth and rock, which adapt to different conditions.The visual semi-automatic deployment of earth and stone is adopted to realize the cross-line allocation of separated subgrade and the visual allocation of cross-ramp in interworking range. The graphic display of the route can be divided into two forms: plane and vertical section.According to the above methods, the road cross section CAD system developed in this paper greatly reduces the workload of the designers, improves the working efficiency, is simple and easy to use, and is close to the actual work.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U412

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