既有桥梁养护中BIM模型构件拆分与模型细度的讨论

摘要

Aiming at the problem of BIM application of existing bridge, the division of structural elements and the problem of model fineness are discussed. It is proposed that the factors such as structural function, space boundaries, the construction sequence etc. should be considered for elements division, and for the model fineness, the factors including accurateposition, clear geometric boundaries and higher curve accuracy etc. should be considered.For some practical cases, examples are proposed to illustrate those viewpoints. The research results of this paper have referential meaning for the three dimensional upgrade of existing bridge management system.%针对既有桥梁的BIM应用问题，讨论了面向养护的模型构件拆分及模型细度问题。提出在构件拆分方面应考虑结构功能、空间界限、施工次序等因素，确定三维模型细度时需满足位置准确、几何界限清晰和较高的曲线精确度等要求；针对若干实际情况进行了举例说明。该文研究成果对于既有桥梁管理系统的三维化升级具有参考意义。