桥梁结构设计中的知识复用技术

重用桥梁设计企业的设计知识会提高设计效率,优化设计方案。然而由于缺乏有效获取设计知识的途径,无法做到知识的有效重用。该文在对桥梁数据进行分析后,建立了面向对象的桥梁结构数据组织方式,进一步建立了复用桥梁设计企业设计资料的系统架构,提出了基于最近邻方法的桥梁构件、结构体系以及项目3个层次的相似性定义的获取相似案例方法。并进一步研究了多元回归和人工神经元网络技术实现对相似案例的修改,以生成符合新的设计要求的桥梁设计案例,形成了基于挖掘以往设计案例中包含知识的桥梁结构设计方法,为图形的自动化排列及图形手工快速排列提供了有效的工具。

Technologies for bridge structure design-based knowledge reuse

Managing and reusing knowledge in bridge structure designs leads to greater efficiencies and improved designs.However,this knowledge has not been effectively reused due to a lack of ways to capture the design knowledge.This paper develops a knowledge reuse framework after analyzing bridge databased object oriented methods.The framework provides three layer similarity functions for bridge projects,structures,and elements using the K nearest neighbor(KNN)method for similar bridge designs.A case modification technique was developed based on neural networks and multivariate regression for new design requests.Finally,tools were developed for automating drawing arrangements and for manual arrangements.