既有线改建拢口计算机辅助设计方法研究

Study on CAD for Reconstruction of Closure Mouth of Existing Railway

研究目的:拢口部分的设计是既有线改建设计工作的重要内容,然而目前国内外针对拢口计算机辅助设计方面的研究尚不多见,为提高拢口部分设计的质量,本文研究了拢口计算机辅助设计的方法,并采用VisualC++.net2002开发平台以及ObjectARX二次开发技术,研发了拢口计算机辅助设计模块。研究结论:该模块成功应用于成都至重庆铁路扩能改造设计中,结果表明:该模块界面友好,性能稳定;可以根据设定的线间距自动地搜索出拢口的范围并计算出拢口范围内平、纵信息;可以对拢口范围内平面参数根据设计规范进行违规检测,对错误信息给出警示,并可通过跟踪显示,跟踪到错误地段;可以快速准确地绘制拢口范围内平面图和详细横断面图,为设计者检查拢口设计的合理性提供了一个直观的平台,提高设计质量。

Research purposes： The design of the closure mouth is an important work for reconstruction of existing railway. However, there is a little research on the computer - aided design method （ CAD ） for the closure mouth of the existing railway at home and abroad. To improve the design quality of closure mouth, the study was done on the computer - aided design methods for the closure mouth, and the CAD model was developed by using the Visual C ＋ ＋. net2002 development platform and ObjectARX secondary development technology. Research conclusions：The module was successfully applied in upgrading of the Chengdu - Chongqing railway. The application showed the module interface was friendly and its performance was stable. It could automatically search the scope of the closure mouth, calculate the plane and vertical data of the closure mouth according to the given track space, detect the plane data that got out of line, gave alarm for the mistaken information with tracing indication to the mistaken area, and rapidly and accurately draw the plane and cross -section drawings. It could provide a audio -visual platform for the designer to check the design rationality of the closure mouth to improve the design quality.