中文摘要：

研究并实现了基于B／S模式的铁路工程形象进度图参数化生成系统（PIPGS）．根据铁路工程进度管理的需要，构建PIPGS的体系结构，设计系统的功能模块与合适的数据模型；建立VML代码后台化机制，获得了基于图形元件的工程形象进度图参数化生成方法；给出了PIPGS的关键技术与操作流程．PIPGS在工程中的应用效果表明，其具有良好的易用性、可复用性与扩展性．

英文摘要：

This paper investigates the design and implementation of project image progress parametric generating system based on B/S model for railway engineering （PIPGS）. Beginning with the requirement analysis of railway engineering project progress management, the architecture of PIPGS is constructed, and the function ＆ data module are designed. A new technique to generate project image progress parametrically based on graphic elements using VML is proposed, and then the key technique and operation flow of PIPGS are introduced. The well application effect of PIPGS on railway engineering strongly shows that PIPGS has predominant accessibility, reusability and expansibility.