某大桥基于Revit软件的桥梁BIM模型参数化设计探析

Research on BIM Moderl Design of Bridge Parameters of the Revit Software

基于某连拱大桥为研究对象,根据桥梁结构设计流程,提出了一套基于Revit软件构建的BIM桥梁建模框架,以参数化模型作为BIM建模框架中的标准化构件族建立了多跨混凝土拱桥模型,并对建立的结构模型应用功能进行了简单介绍。研究结果表明:对于复杂的曲线结构模型,基于指定放样截面形体和路径的方式来建立模型结构,而对于较简单的模型结构,通常在结构设置自适应点,在变截面平面设计截面结构实现桥梁的参数化模型;以标高和轴网系统来描述桥梁构件设计基本要素,运用轴网系统确定标高平面位置,精确描述桥梁各重要控制条件;采用类似于"搭积木"的方式来建立BIM模型。对于自适应点较多构件模型,通常采用连线法,将于实体对应的模型自适应点赋予对应参数。对于竖直放置构件,采用选择面法确定合适的标高平面,在工作片面上确定轴网交点等代表性的放置点来放置模型。

This article is based on a continuous arch bridge as the research object,according to the bridge structure design process,this paper puts forward a set of Revit software to build a bridge of BIM modeling framework,with parametric model as the standardized BIM modeling framework component multi span concrete arch bridge model is established,the family and the function to establish the structure of the model application has carried on the simple introduction. The research results show that the structure model for complex curve,based on the specified lofting section form and way to establish the model of the path structure,for the simple model structure,usually in the structure setting,adaptive in variable cross section plane design cross section structure to realize the parameterized model of bridge; This paper describes the basic elements of the design of the bridge components by means of the elevation and shaft network system,and USES the shaft network system to determine the elevation plane position and accurately describe the important control conditions of the Bridges. The BIM model is built in a similar way to building blocks. For the adaptive point more component model,the attachment method is usually adopted and the corresponding parameters are given to the model adaptive points corresponding to the entity. For vertical placement of components,the selection method is used to determine the appropriate level of elevation,and to determine the positioning points of the network points and other representative points on the job.