基于案例推理的山区铁路桥位设计应用研究

Application of CBR in Location Design of Railway Bridges in Mountainous Area

目前我国进行山区铁路桥位设计的具体操作主要基于已有的大规模交通基础设施建设工程经验的积累,如何把丰富的山区铁路桥位设计工作的经验积累起来,同时给继承式经验设计提供新理论与方法,这成为一个研究热点。将案例推理技术引入山区铁路桥位设计中,把旧的案例和经验量化后构建案例要素集,以多个桥梁特征属性为基础匹配得到相似案例的解决办法,并将相似案例的解决办法进行修改以适配当前问题。应用结果表明:该技术可对复杂的山区铁路提供桥位设计建议和工程措施。案例推理技术评价结果可靠,能够较好地解决山区铁路桥位设计的问题,并提供一种铁路选线设计的新方法。

At present,the domestic location design of railway bridges in mountainous area is based specifically on the accumulated experiences from existing large-scale transport infrastructure construction projects. How to accumulate the rich experiences and provide new theories and methods for inherited experience design has become a research hotspot. In this paper,the case-based reasoning technology is introduced into the location design of railway bridges in mountain area. CBR case element set is established after quantification of the old cases and experiences,and the solutions of similar cases are obtained on the basis of based matching of multiple bridge attributes. In the meantime,the approach is modified to fit the current problems. The application results show that this technology can provide suggestions and engineering measures in bridge location design for complex mountainous railways.CBR technology is reliable in solving the problemsin location design of bridges in mountainous area,and provides a new method for railway route design.