基于知识的桥梁参数化建模

Bridge Parametric Modeling Based on Knowledge

采用基于知识的参数化建模方法对桥梁的参数化建模进行研究,提出了桥梁设计知识表达模型,知识获取方法,桥梁结构拼装算法,桥梁智能变动算法。应用6×70m预应力混凝土连续梁桥抗震设计建模的实例表明,基于知识的建模方法与传统的建模方法相比,随着桥梁结构复杂度的增加,基于知识的建模方法耗费的时间增幅有下降的趋势;而对于需频繁修改的模型,基于知识的方法能有效提高桥梁建模的效率。

In this paper,parametric modeling based on knowledge is presented,whichconsist of the knowledge presentation model in bridge design,the method of knowledge acquistion（KA）,the algorithm of bridge structure composition and the algorithm of bridge intelligent changing.The results of the study are validated through a seismic analysis where a 6×70m pre-stressed concrete continuous bridge is used.Comparison between traditional method and parametric method based on knowledge shows that parametric method based on knowledge is more effective in bridge modeling,especially in complex modeling to be modified frequently.