Application Of The Heritage Information Model In The Design And Investigation Of Heritage Conservation Projects

In the heritage conservation project investigation and design,generally based on traditional engineering measurement techniques and CAD mapping technology,the establishment of two-dimensional Both graphics and 3D models contain only geometric information,supplemented by photographic and textual notes and descriptions to convey the current state of conservation,engineering,and environmental conditions.measures and renovation effects.There are obvious disadvantages compared to the information models built on the basis of 3D laser scanning,photogrammetric technology and BIM technology.BIM technology has been widely used in construction,water conservancy,railway and other industries in engineering construction,and has achieved good results.However,compared with other engineering forms,cultural relics construction has its own peculiarity.Contains richer historical and cultural information,including pictorial information that requires a high degree of authenticity to express "traces of time"..For the specificity of cultural relics,based on Building Information Modeling(BIM)technology,combined with three-dimensional laser scanning technology and photogrammetry.technology,exploring the establishment of Heritage Information Model(HIM),and its application in the survey and design of heritage conservation projects,is the active use of the The development of information technology achievements,the only way to improve the heritage conservation project investigation and design work.This paper combined with Lanzhou San Tai Ge renovation project investigation and design,respectively,the application of three-dimensional laser scanning and photography technology to establish a three-dimensional point cloud model and three-dimensional image model of San Tai Ge,and further integrated use of three-dimensional laser scanning data and photogrammetric data,to establish a BIM model of San Tai Ge.By establishing the above three models,this paper explores the following three aspects with the goal of establishing a heritage information model.First,by comparing the three techniques,the advantages and shortcomings of each are analyzed and summarized when they are applied to the survey and design of heritage conservation projects.The second is the integrated use of laser scanning data high accuracy advantages and photogrammetric data authenticity and clarity of the advantages,in the BIM platform to establish cultural relics information model on the path of exploration,to find an effective,able to adapt to the cultural relics protection project investigation and design needs of the solution.BIM technology as the basic platform,three-dimensional laser scanning technology and photogrammetric technology as a means of information collection to establish heritage information model The purpose of BIM is to integrate the advantages of geometric modeling and image modeling,and at the same time play the role of BIM as an information model in the classification of cultural relics composition elements.Advantages in terms of statistics,management,editing,additional history and culture and other attribute information.To this end,the third aspect of the work done in this paper is to propose a way to integrate 3D laser scanning under conditions where technical barriers are still difficult to break down.The advantages of point cloud data and photogrammetric image data further refine the idea of building heritage information models on a BIM platform.