BIM与Midas结合的大跨连续梁桥施工监测结果分析

Result Analyses of Construction Monitoring for Long-span Continuous Girder Bridge by Combining BIM with Midas

为使建筑信息模型(BIM)与有限元模型实现高效信息交互,更好地将BIM技术所具备的信息化、可视化等优势应用于桥梁工程的施工监测中,利用Revit建立连续梁桥BIM模型,将Midas Civil Link for Revit Structure插件与导出关键截面DXF文件两种方式结合起来,实现有限元模型的转换.将BIM与Midas Civil结合起来对大跨连续梁桥进行有限元分析,为施工监测工作提供理论计算依据.通过对比分析得知理论计算结果与现场监测结果的误差符合规范要求,在实际工程中可服务于大跨连续梁桥线形与应力监测工作,并使其达到理想成桥状态.

The paper aims to realize efficient information interaction between building information model(BIM)and finite element model,and to better apply the advantages of BIM technology such as informatization and visualization to the construction monitoring of bridge engineering.Then Revit is used to establish a BIM model for a continuous girder bridge.The transformation of finite element model is realized by combining Midas Civil Link for Revit Structure plug-in with exporting DXF files of key sections.BIM and Midas Civil are united together to conduct finite element analyses for a long-span continuous girder bridge,which provides theoretical calculation bases for construction monitoring.Through comparative analyses,it is shown that the errors between theoretical calculation results and on-site monitoring results meet the specification requirements.In practical engineering,they can be used to guide the alignment and stress monitoring of longspan continuous girder bridges and to make them reach the ideal completion states.