基于图纸终端的公路隧道图纸设计方法与实现

基于图纸终端的公路隧道设计方法，将图形、尺寸标注、文本标注、工程数量表、文字说明和图框作为一个整体设计管理．图形、尺寸标注、文本标注封装成基于尺寸驱动的工程图元，工程数量表封装成基于特征的工程表元，文字说明封装成面向对象的注释块元，工程图元、工程表元、注释块元和图框共同组成图纸单元．根据工程特征将图纸单元分组．利用目录树对图纸单元、图纸组，甚至整套图纸（图纸终端）进行管理，由此实现基于图纸终端的公路隧道图纸的设计和管理．在此基础上，运用VC＋＋6．0开发同济曙光（GeoFBA）公路隧道图纸设计系统（SETDDM）．最后，归纳了基于图纸终端的公路隧道图纸设计方法的优点．

Drawing Terminal Based Approach for Expressway Tunnel Drafting Design and System Development

The paper presents an approach that combines all portions of drawings(i.e.,drawing terminal) including graphs,dimension marks,text marks, and schedules of quantities,text notes,and drawing frames.Engineering graph components,dimension mark components and text mark components are encapsulated as a parameter-driven Engineering Graph Pattern(EGP).Schedules of quantities are encapsulated as a Engineering Schedule Pattern(ESP) based on characteristic,and text notes are encapsulated as Engineering Notes Pattern(ENP) oriented to objects,and then,EGPs,an ESP,an ENP and a drawing frame form a drawing unit together.Drawing units are grouped on the basis of engineering feature and managed with the help of catalog tree.In this way,mounts of drawings are designed,modified,and managed clearly and efficiently.Based on this approach,a system is developed with Visual C 6.0 on the platform of GeoFBA for expressway tunnel drawing design.Finally,the advantages of this approach are briefly specified.