【作者】 黄孝章；

【导师】 秦作睿； 胡思继；

【作者基本信息】 北方交通大学 ， 运输管理工程， 1998， 博士

【摘要】 本文在现有编组站计算机辅助设计研究成果的基础上,提出了一些新的设计理论和设计方法,并在系统设计中得到了应用。主要包括以下几方面内容: (1) 对铁路站场咽喉区的网络结构进行了认真的分析,建立了咽喉区优化设计模型,并应用邻接矩阵和AutoCAD环境下图形数据库的特性,实现了计算机实时对咽喉区网络结构图中图形信息的自动识别和提取,同时应用线性规划问题内点法中的仿射变换法对模型进行优化求解。提出了咽喉区网络结构图到设计图的自动拓扑变换方法。 (2) 采用驼峰头部平面结构常用布置原则和辅助指标评价相结合的方法自动确定驼峰头部平面网络结构图。同时对调车场尾部的平面结构布置作了具体的分析。用转角增量法、限界轨迹线交点判别法及本文提出的咽喉区网络结构图自动拓扑变换方法实现了各种类型、各种规模驼峰头部和调车场尾部平面图的优化设计和自动拓扑变换。 (3) 在现有驼峰纵断面设计理论和方法的基础上,以提高驼峰推峰速度及降低驼峰高度为目标,建立了驼峰溜放部分纵断面设计的多目标优化模型,运用模糊贴近度分析理论,减少了统一权法在多目标优化过程中的盲目性,同时运用了DFP变尺度算法对该模型进行了优化求解。实现了驼峰纵断面的自动设计和检算,并能自动输出纵断面和速度-时间曲线图形。 (4) 对现有警冲标与信号机位置计算方法作了简单的介绍:对曲线内外加宽及建筑物接近限界作了具体的几何描述;建立了曲线内外加宽限界轨迹线的轨迹方程;提出了警冲标与信号机位置计算的新方法,并应用该方法在BZZCAD系统中实现了警冲标与信号机位置的自动计算及其图形的自动生成等功能。 (5) 提出了站场CAD系统可视化的具体内容和实现站场CAD系统可视化的重要意义,并对其实现方法在理论上作了初步探讨,提出了将站场三维实体在变坡点处划分为各个子实体,并应用从三视图重建三维形体的方法来重建各三维子实体,最后在AutoCAD环境下,通过实体的并、交运算实现站场三维实体的重建。 (6) 利用本文提出的方法和现已成熟的开发技术,在AutoCAD R12 for Windows环境下开发了编组站计算机辅助设计(BZZCAD)系统。该系统具有以下功能:①咽喉区网络结构图的自动拓扑变换;②各种类型和规模驼峰头部平面图的自动绘制;③编组场尾部线束式咽喉平面图的自动绘制;④警冲标与信号机位置的自动计算与绘图;⑤驼峰溜放部分纵断面的自动设计、检算与自动绘图;⑥自动输出工程数量表:⑦交互式绘制、编辑各种站场平面设计图。更多还原

【Abstract】 Some new theory and methods of marshalling station CAD, which is based on the existing achievements, have been presented and used in the marshalling station CAD syatem in this thesis. The main accomplishments achieved in this thesis are described below:1. The optimal design model of the throat area of railway yard is established on the base of the network figure of the throat area analysed carefully. A few information of network figure of throat area can be identified and obtained automatically by computer .The method of automatic topology commutation of thorat area network figure is presented.2. The network figure of the plane of hump head can been chosen according to usual arranging rules. The plane arrangement of switchyard tail is also analysed concretly. The optimal design and topology commutation can been carried out automatically on the various types and scales of humps through using the comer increment method, the method of point intersection of trochoid and topology commutation method.3. The multi-objective function optimal model is established on the base of existing design theory and method of profile of hump. Fuzzy closeness analysis theory is used to reduce the blindness of the synthetic weighted method for multi-objective optimal design, and DFP algorithm is used to slove the model. The figures of profile of hump and velocity-time curve can been drawed automatically.4. The existing methods of positing fouling point and teleseme are introduced simply. The orbit equation of trochoid of the inside and outside widen on cure is established and the new method of calculating position of fouling point and teleseme is presented by describing the inside and outside widen on curve and building limit in the paper.The position of fouling point and teleseme can been calculated and drawed automatically in the marshalling station CAD system by applicating the method.5. The concrete content and significance of visualization of railway yard CAD system is presented. The method to divide the 3-Dimension entity of the yard into subentities at the varietal gradient point, to reconstract the 3-Dimension subentities according to the theory three vision figure and to reconstract finally 3-Dimension entity of yard by combining and intersection operation in AutoCAD software package is presented in this pqper.更多还原