摘要:美国、新加坡、日本、韩国等多个国家已在建筑行业提出建筑信息模型(Building Information Modeling，BIM)应用要求，并建立了BIM国家级应用标准。我国引入BIM技术较晚，技术尚不成熟，目前正在各个行业，特别是铁路、建筑、水电行业推广BIM技术。中国铁路总公司各所属单位也已纷纷开展部分BIM技术研究及应用实践工作，如铁一局、铁二局等工程局和铁二院已投入了多个试点项目，发展较快。本文以某项目为工程背景，针对该工程桥梁三维模型中桥墩钢筋的创建过程，介绍CATIA(Computer-Aided Three-dimensional Interactive Application)高级知识工程在BIM桥梁钢筋建模中的应用。此应用方法可快速创建结构复杂桥墩内不同型号的钢筋，较一般的三维建模方法来讲更为快捷、方便，很大程度上提高了设计人员的工作效率，也为后续在虚拟施工仿真、施工工艺指导、施工信息化等方面提供了重要的基础信息。

Abstract: United States, Singapore, Japan, Korea and other countries have proposed Building Information Modeling (BIM) application requirements and the establishment of national application of BIM standards in the construction industry. The introduction of BIM technology in China is later and is not yet mature. BIM is currently applied in various industries, particularly in the construction and hydropower industries. All subordinate units of China Railway Corporation have also carried out part of the BIM technology research and application of practical work with several pilot projects. Taking a project engineering as background with the creation of three-dimensional model of the bridge piers rebar, this article introduces Computer-Aided Three-dimensional Interactive Application (CATIA) and advanced knowledge engineering applications in steel bridge BIM Modeling. This application method can quickly create different types of steel piers within the complex structure.Compared with the general three-dimensional modeling methods, it is more efficient, convenient and greatly improves the efficiency of the designer. It also provides important basic information for subsequent simulation in virtual construction, construction technology guidance, information technology and other aspects of construction.