Research On Classification And Coding Of Excavation Engineering Information Model And Its Application

With the continuous development of excavation engineering towards the direction of super large,super deep and super complex,more and more relevant data are generated during the excavation construction process,and the requirements of project participants on cost,schedule,quality and safety in project management become more stringent.Since the traditional construction management mode has prominent problems including small information coverage,inconvenient information interaction,time-consuming and laborintensive of process management and low efficiency,so the establishment of lifecycle management system based on Building Information Modeling(BIM)has become the main technical menas and development trend to improve the informatization level of excavation construction management.At present,in the process of information management of excavation engineering,there are inevitably information barriers and data islands among different professions and processes,which make the construction of excavation engineering face difficulties in data sharing and analysis,lack of management means and other problems.The fundamental reason is the lack of structured organization of relevant information.As the core of BIM basic standards,information classification and coding standard is the primary premise for the efficient transmission and exchange of information.This paper takes the classification and coding of excavation engineering information model as the research object.The main research contents and achievements are as follows:(1)Research on information classification and coding system.Based on the basic theory of classification and coding,this paper systematically summarizes and compares the domestic and foreign engineering information classification systems,and analyzes the characteristics and development trend of different classification systems,which can provides necessary theoretical support and guidance for theesearch on classification and coding of excavation engineering information model.(2)Research on classification and coding of excavation engineering information model.This paper comprehensive analyzes the characteristics of excavation engineering,the problems in the existing classification system and the data requirements of the lifecycle of excavation engineering.The information classification framework suitable for the lifecycle of excavation engineering is created,and the classification and coding table is compiled.(3)Rapid creation of excavation engineering information model based on classification coding.The excavation engineering information model is divided into two parts: geometric information and non-geometric information.The excavation engineering component parametric family library is established and the code adding program based on dynamo platform is developedto realize the rapid creation of excavation engineering information model.The completed information model is converted into intermediate files of different formats,which verifies the effectiveness of classification coding in information sharing.(4)Application of classification coding in excavation monitoring.The realization of information transmission in excavation mornitoring by classification coding is analyzed based on a case study of the application of classification coding in excavation safety monitoring platform.