【摘要】 古建筑因年代久远而缺乏详尽的图纸和文献记录，对古建筑进行测绘并建立三维数字化模型有重要意义，可以更好地实现古建筑文物的保护和开发利用.本文对全国重点文物保护单位河南大学南大门开展了古建筑信息化模型(BIM)的建模研究，基于现场实测数据，利用Rhino软件对河南大学南大门进行了三维逆向建模，详细阐述了勒脚、主体结构、斗拱、屋顶和纹理贴图的建模过程和方法.研究结果表明，河南大学南大门古建筑BIM模型的重建，不仅增强公众对文化遗产的直观感知和全貌理解，还为文物保护和文化传承提供了有效工具和方法，有助于推动古建筑文化的传承和传播.更多还原

【Abstract】 Due to their long history, ancient buildings lack detailed drawings and literature records. It is of great significance to conduct mapping and establish three-dimensional digital models of ancient buildings, which can better achieve the protection and development and utilization of ancient architectural cultural relics. This paper conducts a modeling research on the ancient building information Modeling(BIM) of the South Gate of Henan University, a key national cultural relic protection unit. Based on the on-site measured data, the 3D reverse modeling of the South Gate of Henan University is carried out using Rhino software. The modeling process and methods of the inlets, main structure, bracket, roof and texture mapping are elaborated in detail. The research results show that the reconstruction of the BIM model of the ancient buildings at the south Gate of Henan University not only enhances the public’s intuitive perception and overall understanding of cultural heritage, but also provides effective tools and methods for cultural relic protection and cultural inheritance, which is conducive to promoting the inheritance and dissemination of ancient architectural culture.更多还原