基于点云数据与BIM的古建筑三维信息表达方法研究

Research on 3D Information Representation Method of Ancient Architecture Based on Point Cloud Data and BIM

古建筑外形古朴、华美,但形态和结构纷繁复杂,因其构造和材料的特殊性,相比于现代建筑其形体更为复杂。复杂形体的具体信息难以基于少量二维信息进行全面描述,这使得古建保护工程中基于古建筑图纸重建三维模型面临着重大难度。文章针对目前古建筑保护工作中信息缺失、信息共享性差、缺乏科学化管理等弊端,面向基于现代技术解决古建筑信息留取、表达和管理的迫切需求,结合现代数字化技术在古建筑保护中的优势,提出了一种基于三维激光扫描技术和建筑信息模型(BIM)技术的古建筑信息有效表达方法,实现了基于点云数据建立BIM模型表达古建筑全生命周期信息。

Ancient architecture has magnificent appearance, but the morphology and structure are complex. It is much more complicated than the modern architecture because of its special structure and material, the specific information of complicated shape is difficult to describe with a small amount of two-dimensional information, which makes the ancient building reconstructing from drawings to the 3 D models particularly difficult. In view of the defects of information missing, poor information sharing and lack of scientific management in the protection of ancient buildings, and facing the problems of how to apply modern technology to solve the problems of information retention, expression and management of ancient buildings. The paper put forward a new and effective method of information representation of ancient architecture based on the combination of point cloud data and BIM technology, implemented BIM model based on point cloud data to express life cycle information.