With the development of BIM application in the architecture industry, the BIM technology is no longer treated as merely a tool software and limited to the application in a single building.There is growing demand for the storage, management and analysis of the city-level massive BIM data.For this demand, this paper investigates the integration of technologies including the Hadoop big data framework, cloud computing, WebGL 3D display and BIM information exchange template, and finally proposes a BIM data cloud platform with massive BIM data storage, management and analysis capabilities.The platform can implement many functions, including BIM data file parsing, WebGL based 3D visualization, BIM object query, BIM object attribute list and BIM sub model extraction.The core of the BIM data cloud platform is data management.Through the HBase and HDFS, the storage and management of the PB-level BIM model are realized.Currently, it is an ideal data management platform for the city-level BIM data management.

In recent years, the applications of BIM technology in the construction industry has attracted increasing domestic and international attentions, which is definitely becoming the future trend of construction technology.As the first step in BIM implementation, the creation of the BIM model is of great significance to the successful application and promotion of BIM. The IFC data criterion, as an international common BIM basic data format, enables the BIM model following such IFC format to transfer and exchange information among different AEC engineering software. However, different software currently support the IFC formats at different scopes and for different degrees. This paper collates and analyzes the IFC2X3 support statistics in the current mainstream BIM software of Coordination View Certification 2.0 project in Building SMART, and obtains a BIM modeling software selection method based on the IFC certification, providing a software reference for BIM applications with different project characteristics, and promoting the development of IFC criterions and the popularity of BIM technology.

As the core of informatization construction of large-scale architectural design enterprises, the production business platform plays an important role in collaborative design, quality check, and data management. Facing the construction needs of the production platform of large-scale architectural design enterprises, this paper creates an integrated platform based on cloud architecture for the whole life cycle business application and management to be used by architects and managers, which takes the production business data management as the core, and interconnected production and working environment to realize horizontal integration and vertical connectivity of business chain in engineering construction industry. Users are able to efficiently carry out production management in a unified data environment. In view of the construction needs and goals, this paper puts forward the overall structure of the production business platform for large-scale architectural design enterprises, which is divided into four levels of platform portal, digital production management, data management and big data support. At the same time, the overall technical route of the platform based on micro-service architecture is proposed, which includes five characteristics and four key technologies to achieve high-level performance and availability. The main idea and method of building production business platform proposed in this paper are intending to provide reference for the construction of production platforms for large-scale architectural design enterprises in the industry, to promote the integration of information technology between the Internet information technology and the construction industry, and to improve the informationization level of architectural design enterprises in the industry.

Hospital buildings are considered to be the most challenging building facilities, and there are many uncertainties in the construction process, such as population trends, disease patterns, technological advances and clinical knowledge.Among them, the safety of buildings in the event of disasters is particularly important.The complexity, density and flammable materials of hospital buildings add to the fire hazard.In the event of fire, due to the differences in evacuation conditions of different personnel, It is very difficult to evacuate, so it is necessary to have possible fire hazards in hospital buildings and to establish comprehensive and reliable fire supervision.This paper describes in detail the technical route of building fire simulation and escape analysis in large hospitals, including model construction, ventilation analysis, fire simulation and evacuation analysis.The simulation analysis is carried out by taking a large hospital as an example to obtain the most unfavorable ventilation conditions.The results of temperature distribution cloud map, smoke distribution cloud map and evacuation route of each room in the fire process can provide technical route reference for the analysis of similar projects through project research.

Traditional two-dimensional CAD design is still the main trend in the current domestic construction field, and the reinforced drawings mainly rely on flat overall representation in structure industry.As the complexity of engineering projects and the requirement of efficiency and quality continuously rise, the disadvantages of flat overall representation method are gradually revealed, including that it is not intuitive, incomplete of location information, difficult to avoid collision or directly guide construction.This article discusses the automatic generating from flat overall representation to reinforced three-dimensional model, the engineering practice of reinforced three-dimensional model and the relevant improvement of design efficiency and quality.The Cancer (proton) Center, Shanghai Jiao Tong University Affiliated Ruijin Hospital case is used to expound the process of automatic generating and the application of three-dimensional model, including reinforced collision calibration between bar and bar, bar and embedded pan, and in complex nodes, engineering budgeting based on reinforced three-dimensional model, and reinforced compliance check.